SC4020 Qual Units Deployement Guide

8/18/2019 SC4020 Qual Units Deployement Guide

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SC4020 Qualification Units Deployment GuideThe SC4020 Qualification Units Deployment Guide describes how to install and configure SC4020

qualification units.

ContentsPreparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Installing the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Back‐End Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Front‐End Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Set Up Software Center Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Perform Post‐Setup Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Preparing for InstallationMake sure that the correct equipment is available, the installation environment is ready, and you have the necessary materials.

Unpack and Inventory the Storage Controller HardwareMake sure the Storage Controller equipment that was ordered arrived safely on site:

Storage System Enclosure with two installed Storage Controller Modules

Two Battery Backup Units (BBU)

Dell Enterprise Plus Drives and Drive Blanks

Rail kit

Two Power Cables

Two serial cables

Two SAS cables

Fibre Channel cables

Ethernet cables

Prepare the Installation EnvironmentMake sure that the environment is ready for installation.

Rack

Space: There

must

be

sufficient

space

in

the

rack

to

accommodate

the

storage

controller.

Power: Power must be available in the rack, and the power delivery system must meet the power requirements for the storage controller.

Connectivity: The rack must be wired for connectivity to the management network and any networks that carry front‐end IO from the storage controller to servers.

Dell — Internal Use Only — Confidential


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Gather Required MaterialsMake sure that you have the following items before you begin the installation.

Installing the HardwareAlways follow standard safety precautions when installing hardware to avoid injury and damage to the

equipment.

Mount Storage System Enclosure in RackDell recommends mounting the storage system enclosure in a rack to ensure safety and to allow for expansion.

1 Assemble the rails following the safety instructions and the rack installation instructions provided with your system.

2 Install network switches, as applicable.

3 Install the SC4020 chassis into the rack.

Figure 1. Mount Storage System Enclosure

4 Secure the

storage

system

enclosure

to

the

rack.

a Open the latch on each chassis ear to display the mounting bolts.

b Screw the bolts into the rack.

c Close the latch on each chassis ear.

Required Item Description

Storage Center license file Controls which Storage Center features are enabled.

Hardware Serial

Number

(HSN)

and System Serial Number (SSN)Serial

numbers

used

to

configure

the

storage

controller

modules.

Laptop with RS‐232 serial port or USB port

Used to run commands and view console messages during storage controller module configuration.

Computer connected to the same management network as the storage controller module

Used to connect to the Storage Center System Manager (through a web browser) to complete the storage controller module configuration.



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5 When the enclosure is turned on and the drives spin up, make sure that the drive LEDs are on (green), indicating normal conditions.

Figure 2. Dell Enterprise Plus Drive

Install Battery Backup Unit in Storage Controller ModulesThe battery backup unit allows the SC4020 to save cache to flash persistent memory upon receiving a power failure indication.

Item Name Description

1 Hard drive activity indicator • Flashing green: Indicates drive activity

• Steady green: Indicates no drive activity

2 Hard drive status indicator • Steady green: Normal operation

• Flashing

green (on

1 sec/

off

1 sec):

Drive

indicator

is

set

to

On

in

System

Manager.

• Off: No power to the drive

Warning: Installing an incompatible battery backup unit may increase the risk of fire or explosion. Observe the following precautions:

The battery backup unit should only be replaced with a BBU that is the same or equivalent as the

factory

installed

BBU. Do not attempt to open or service the BBU. Do not dispose of the BBU in a fire or with household

waste. Contact the local waste disposal agency for the location of the nearest battery deposit site.



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1 Align a BBU with storage controller module 1.

Figure 3. Storage Controller Module Battery Backup Unit

2 Lift the release tab and slide the BBU into the storage controller module until it locks in place.

3 Align a BBU with storage controller module 2.

4 Lift the release tab and slide the BBU into the storage controller module until it locks in place.

5 When the enclosure is turned on, make sure that the battery backup unit LEDs are on (green), indicating normal conditions.

Figure 4. Battery Backup Unit LEDs

1 Battery Backup Unit 2 Release tab

3 Storage Controller Module 1

Item Name Description

1 Armed indicator • Steady green: Armed

• Flashing green (1 beat on / 3 beats off): Not armed and charging

• Flashing green (2 beats on / 2 beats off): Not armed and not charging

2 Fault indicator • Steady amber: Battery fault

• Off: No fault



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Back-End ConnectionsCreate an IPC direct connection be connection SAS cable between the storage controller modules.

Create SAS IPC Connection Between the Storage Controller ModulesAdd SAS cabling between the initiator and target ports of each storage controller module.

1 Connect a SAS cable between storage controller module 1, port A and storage controller module 2, port B.

2 Connect a SAS cable between storage controller module 1, port A and storage controller module 2, port B.

Figure 5. SAS IPC Connection

3 Label both ends of each SAS cable with IPC labels.

Figure 6. Labels for IPC Connection

Front-End ConnectionsFront‐end connections refer to the Fibre Channel connections between the SC4020 and the server. Dell Compellent recommends connecting servers to the SC4020 using the most redundant options available.

Types of Redundancy for Front-End ConnectionsFront‐end redundancy is achieved by eliminating single points of failure that could cause a server to lose connectivity to the Storage Center.

Depending on how the Storage Center is configured, the following types of redundancy are available.

Path redundancy: When multiple paths are available from a server to an SC4020, a server configured for multipath IO (MPIO) can use multiple paths for IO. If a path fails, the server continues to use the remaining active paths.

Storage controller module redundancy: If one storage controller module fails in an SC4020, the front‐end ports fail over to the functioning storage controller module. Both front‐end connectivity modes (legacy mode and virtual port mode) provide storage controller module redundancy.

1 Storage Controller Module 1 2 Storage Controller Module 2



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Port redundancy: In virtual port mode, if a port goes down because it is disconnected or there is a hardware failure, the port can fail over to another functioning port in the same fault domain. Port redundancy is available only for Storage Centers operating in virtual port mode.

Fibre Channel ZoningWhen using Fibre Channel for front‐end connectivity, zones must be established to ensure that storage is visible to the servers. Plan the front‐end connectivity using zoning concepts discussed in this section before starting to cable the storage controller modules.

Zoning can be applied to either the ports on switches or to the World Wide Names (WWNs) of the end devices. Zones should be created using a single initiator (using physical WWNs) and multiple targets (using virtual WWNs).

The virtual WWNs from each storage controller module must be included in the zone with each host’s WWN.

WWN Zoning Guidelines

When WWN zoning is configured, a device may reside on any port or change physical ports and still be visible because the switch is seeking a WWN.

Port Zoning Guidelines

When port zoning is configured, only specific switch ports are visible. If a storage device is moved to a

different port

that

is

not

part

of

the

zone,

it

is

no

longer

visible

to

the

other

ports

in

the

zone.

Note: For virtual port mode, WWN zoning is recommended.

Connectivity Type Guidelines

Legacy mode • Include all Storage Center front‐end WWNs or ports in a single zone.

• Create server zones that contain a single initiator and multiple targets, and which include the server HBA WWN.

Virtual port mode • Include all Storage Center virtual WWNs in a single zone.

• Include all Storage Center physical WWNs in a single zone.

• Create server zones that contain a single initiator and multiple targets (Storage Center virtual WWNs), and which include the server HBA WWN.

Fibre Channel replication • Include all Storage Center physical WWNs from storage controller module 1 and storage controller module 2 in a single zone.

• Include all Storage Center physical WWNs of storage controller module 1 and the virtual WWNs of storage controller module 2 on the particular Fabric.

• Include all Storage Center physical WWNs of storage controller module 2 and the virtual WWNs of storage controller module 1 on the particular Fabric.

Note: Some ports may not be used or dedicated for replication, however ports that are used must be in these zones.

Connectivity Type Guidelines

Legacy mode or virtual port mode • Include all Storage Center front‐end ports.

• Create server zones which contain all Storage Center front‐end ports and a single‐server port.

Fibre Channel replication Include all Storage Center front‐end ports from System A and System B in a single zone.



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Legacy Mode with Single-Fabric Fibre Channel

Connect a legacy mode Fibre Channel to a single fabric if only one FC switch is available and you want to protect against storage controller module failure.

In this configuration, two fault domains are spread across both storage controller modules. Each fault domain contains sets of primary and reserve paths (P1‐R1 and P2‐R2). The reserved paths provide redundancy for a single storage controller module failure. This configuration is vulnerable to switch failure.

Prerequisites

Each storage controller module must have two available FC front‐end ports.

Steps

1 Connect each FC server to the FC fabric.

2 Connect fault domain 1 (shown in orange) to fabric 1.

Primary Port P1: Storage Controller Module 1, Port 1 → Fabric 1

Reserved Port R1: Storage Controller Module 2, Port 1 → Fabric 1

3 Connect fault domain 2 (shown in blue) to fabric 1.


Reserved

Port

R2: Storage

Controller

Module

1,

Port

2 →

Fabric

1

4 Configure FC zoning to meet the legacy mode zoning requirements.

Figure 7. Single-Fabric FC in Legacy Mode

1 Server 1 2 Server 2

3 Fabric (FC Switch) 4 Storage Controller Module 1




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Legacy Mode with Dual-Fabric Fibre Channel

Use two fabrics with legacy mode to prevent an FC switch failure or storage controller module failure from causing an outage.

In this configuration, four fault domains are spread across both storage controller modules. Each fault domain contains sets of primary and reserve paths (P1‐R1, P2‐R2, P3‐R3, and P4‐R4). To provide redundancy, the primary port and the corresponding reserve port in a fault domain must connect to the same fabric. When MPIO is configured on the FC servers, the primary paths provide redundancy for a single port or cable failure. The reserved paths provide redundancy for storage controller module failures.

Prerequisites

Each storage controller module must have two available FC front‐end ports for each FC fabric.

Steps

1 Connect each FC server to both FC fabrics.




3 Connect fault

domain

2 (shown

in

blue)

to

fabric

1.



4 Connect fault domain 3 (shown in green) to fabric 2.



5 Connect fault domain 4 (shown in purple) to fabric 2.




Figure 8. Dual-Fabric FC in Legacy Mode


3 Fabric 1 (FC Switch) 4 Fabric 2 (FC Switch)




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Virtual Port Mode with Single-Fabric Fibre Channel

Connect virtual port mode Fibre Channel to a single fabric if only one FC is available and you want to protect against port or storage controller module failure.

In this configuration, there is one fault domain because there is a single FC fabric. Each storage controller module is connected to the fabric by at least two FC connections to provide port redundancy. If a single port fails, its virtual port fails over to another port. If a storage controller module fails, the virtual ports on the failed storage controller module move to ports on the other storage controller module. This configuration is vulnerable to switch failure.

Prerequisites

Each storage controller module must have two available FC front‐end ports.

The requirements for virtual port mode must be met.

Steps

1 Connect each server to the FC fabric.


Storage Controller Module 1, Port 1 → Fabric 1

Storage Controller

Module

1,

Port

2 →

Fabric 1




Figure 9. Single-Fabric FC in Virtual Port Mode


3 Fabric 1 (FC Switch) 4 Storage Controller Module 1




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Virtual Port Mode with Dual-Fabric Fibre Channel

Use two fabrics with virtual port mode to prevent an FC switch failure or storage controller module failure from causing an outage.

In this configuration, there is one fault domain for each FC fabric. Each storage controller module is connected to both fabrics by two FC connections. If a single port fails, its virtual port fails over to another port in the same fault domain. If a storage controller module fails, the virtual ports on the failed storage controller module move to ports on the other storage controller module in the same fault domain.

Prerequisites

Each storage controller module must have two available FC front‐end ports for each FC fabric.

The requirements for virtual port mode must be met.

Steps

1 Connect each server to both FC fabrics.




Storage Controller Module 2, Port 1 → Fabric 1 Storage Controller Module 2, Port 2 → Fabric 1

3 Connect fault domain 2 (shown in blue) to fabric 2.






Figure 10. Dual-Fabric FC in Virtual Port Mode


3 Fabric 1 (FC Switch) 4 Fabric 2 (FC Switch)




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Set Up Software Center SoftwareConnect to the Storage Center management interfaces and configure the Storage Center software.

Connect the Ethernet Management PortsThe Ethernet management port of each storage controller module must be connected to a management network. The Ethernet management interface supports system login and access to the management software. It is also used to send email, alerts, SNMP traps, and system data using Phone Home.

Prerequisites

Locate the Ethernet management cables and management labels that shipped with the SC4020.

1 Connect the management port on each storage controller module to an Ethernet switch or VLAN.

Figure 11. Ethernet Management Interface

2 Label both ends of each Ethernet management cable with management labels.

Figure 12. Management Cable Label

Turn on the Storage ControllerAll hardware must be installed and cabled before turning on the SC4020. In addition, the FC switches must

be configured and zoned before the SC4020 is configured.

1 Ethernet switch 2 Ethernet cable

3 Ethernet cable 4 Storage Controller Module 1




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1 Ensure that the power switches are in the OFF position before connecting the power cables.

Figure 13. Connect Power Cable2 Connect the power cables to the power supply units (PSUs) in the storage system enclosure.

3 Plug the other end of the power cables into a grounded electrical outlet or a separate power source such as an uninterrupted power supply (UPS) or a power distribution unit (PDU).

4 Secure the power cables firmly to the bracket using the strap provided.

Figure 14. Secure the Power Cables

5 Simultaneously press both power switches on the rear of the storage system enclosure to turn on the SC4020.

Caution: When the SC4020 is powered on, there is a one‐minute delay while the SC4020 prepares to boot. During this time, the only indication that the SC4020 is powered on are the LEDs on the storage controller modules. After the one‐minute delay, the SC4020 fans and LEDs turn on as an indication that the storage controller modules are starting to come up.



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Figure 15. Power on the SC4020

Configure the Storage ControllerUse serial connections to the storage controller modules to set the initial configuration.

Configure a Storage Controller ModuleConfigure the storage controller module with the HSN and SSN provided in the pre‐installation documents. In addition, configure an IP address for the management interface (eth0), specify one or more DNS servers, and set the domain name to which the Storage Center belongs.

Prerequisites

eth0 supports system login and access for the software. It is used to send emails, alerts, SNMP traps, and Phone Home data.

eth1 is used for dedicated Interprocess Communication (IPC) between storage controller modules. Because eth1 is directly connects both storage controller modules, no default gateway is required.

Steps

1 Use the supplied serial cable (RS‐232 to 3.5 mm mini connector) to connect from a PC or laptop to a storage controller module. (To connect from a USB port on a PC or laptop, use a USB to RS‐232 converter.)

2 Open a terminal emulator or a command line interface on the PC or laptop.

3 Configure the connection as shown in the following table.

Caution: Do not change the eth1 address unless both storage controller modules were factory

configured with

the

same

address

or

the

customer

requests

the

change.

The

eth1

address

cannot

reside in the same subnet as eth0.

Setting Value

Emulation VT220

Column Mode 132

Line Wrapping Off

Connection Serial Port

Connection Type Direct

Baud Rate 115,200



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4 Press the Enter key several times to initiate the connection. The terminal displays the prompt sn0> to indicate that the storage controller module is in Safe Mode.

5 Run the following command to enter the shellacess developer mode.

shellaccess developer

6 Perform the following steps to specify the required prejoin configuration information on storage controller module 1 (leader storage controller module):

a Run the

following

command

to

display

the

prejoin

configuration

information

that

must

be

specified.

platform prejoin show

Example:

sn0> platform prejoin show

****************************************************************

Prejoin configuration:

Item Local controller Remote controller

------------ -------------------------------- --------------------------------

Canister 0 1

SSN 0 0

HSN 0 0

eth0 IPv4 10.0.10.225/8 0.0.0.0/32

eth0 IPv6 ::/128 ::/128

eth1 IPv4 169.254.0.100/16 169.254.0.101/16

eth1 IPv6 ::/128 ::/128

gateway IPv4 0.0.0.0 0.0.0.0

gateway IPv6 :: ::

Domain

DNS Server 0 0.0.0.0 0.0.0.0

DNS Server 1 0.0.0.0 0.0.0.0

****************************************************************

SSN not configured.

Local HSN not configured.

When all issues identified above are corrected, type:

'-sm -go'

to continue normal processing.

****************************************************************

b Run the following commands to set the HSN and SSN using the SSN provided in the pre‐installation documents.

Parity None

Data Bits 8

Stop Bits 1

Flow Control Hardware

or

default

Note: To facilitate troubleshooting, enable logging for the session.

Setting Value



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platform init hsn set [lower SSN ]

platform init ssn set [lower SSN ]

Example:

platform init hsn set 10001

platform init ssn set 10001

c Run the following command to specify an IP address and subnet mask for the management interface (eth0).

ifconfig inet eth0 [IP

address]/[ prefix

length]

Example:

ifconfig inet eth0 198.51.100.99/24

d Run the following command to specify the gateway address.

ifconfig inet gateway [ gateway

address]

Example:

ifconfig inet gateway 198.51.100.1

e Run the following command to specify the domain name.

ifconfig domainname [domain name]Example:

ifconfig domainname corp.dom

f Run the following command to specify one or more DNS servers.

net dns init [DNS server 1] [DNS server 2]

Example:

net dns init 203.50.113.55 203.50.113.90

g Run the following command to verify that the prejoin configuration information is complete.


h Run the following command to save changes to the configuration.

ifconfig savei Run the following command to exit safe mode and reboot the storage controller module.

-sm -go

7 Perform the following steps to specify the required prejoin configuration information on storage controller module 2 (peer storage controller module):

a Run the following command to display the prejoin configuration information.


Example:

sn0> platform prejoin show

****************************************************************

Prejoin configuration:

Item Local controller Remote controller

------------ -------------------------------- --------------------------------

Canister 1 0

SSN 0 0

Note: The storage controller module takes several minutes to reboot and it may reboot more than once — this is normal.



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HSN 0 0

eth0 IPv4 10.0.10.173/8 0.0.0.0/32

eth0 IPv6 ::/128 ::/128

eth1 IPv4 169.254.0.101/16 169.254.0.100/16

eth1 IPv6 ::/128 ::/128

gateway IPv4 0.0.0.0 0.0.0.0

gateway IPv6 :: ::

Domain

DNS Server 0 0.0.0.0 0.0.0.0

DNS Server 1 0.0.0.0 0.0.0.0

****************************************************************

SSN not configured.

Local HSN not configured.

When all issues identified above are corrected, type:

'-sm -go'

to continue normal processing.

b Run the

following

commands

to

set

the

HSN

and

SSN

using

the

SSN

provided

in

the

pre

‐installation

documents.

platform init hsn set [higher SSN ]

platform init ssn set [higher SSN ]

Example:

platform init hsn set 10002

platform init ssn set 10002

c Run the following command to specify an IP address and subnet mask for the management interface (eth0).

ifconfig inet eth0 [IP address]/[ prefix length]

Example:

ifconfig inet eth0 198.51.100.100/24

d Run the following command to specify the gateway address.

ifconfig inet gateway [ gateway address]

Example:

ifconfig inet gateway 198.51.100.1

e Run the following command to verify that the prejoin configuration information is complete.


f Run the following command to save changes to the configuration.

ifconfig save

g Run the following command to exit safe mode and reboot the storage controller module.

-sm -go

Running the Storage Center Startup WizardUse a web browser on a computer with network access to the Storage Center to access Storage Center System Manager and launch the Startup Wizard.

Note: The controller module takes several minutes to reboot and it may reboot more than once — this is normal.



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Prerequisites

You must have a computer that has connectivity to the Storage Center management interface. The computer must have the following software installed:

One of the following supported web browsers (other browsers and versions may have limited compatibility):

Microsoft

Windows

Internet

Explorer

Versions

7,

8,

and

9 Microsoft Windows Internet Explorer 10 and 11 on the desktop (Internet Explorer 10 and 11 Modern

version is not supported)

Mozilla Firefox on Microsoft Windows

The 32‐ bit (x86) Java Runtime Environment must be installed to run Storage Center System Manager in any 32‐ bit browser.

Steps

1 Use a supported web browser to connect to the eth0 IP address or host name of storage controller module 1.

2 Acknowledge any security messages.

The Storage Center Login page appears.

3 Enter the default user name and password:

User: Admin

Password: mmm

4 Click Login.

Note: Security messages

that

appear

may

differ

depending

on

the

browser

used.

(Click

Continue

to this website in Internet Explorer or add a security exception in Firefox.)

Note: The user name and password are case‐sensitive.



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5 If the password expired page appears, enter a new password for the Admin user:

a Enter the old password in the Old Password field

b Enter a new password in the New Password and Confirm Password fields.

c Click Login. The password is changed and you are logged in to the Storage Center System Manager.

6 If prompted, click Yes to acknowledge certificate messages.

The Startup Wizard appears and displays the Software End User License Agreement (EULA).

Complete the Startup WizardUse the Startup Wizard to configure the Storage Center. The wizard contains the following pages.

License Agreement Page

Use the License Agreement page to read and accept the Dell End User License Agreement (EULA).

1 Enter information for the required Approving Customer Name and Approving Customer Title fields. The name and title of the approving customer and the approval date are recorded and sent to Dell Technical Support Services using Phone Home.

2 After reading the EULA, click Accept to continue with setup. The Load License page appears.

Load License Page

Use the Load License page to upload the Storage Center license file. The license file makes settings available depending on what features were purchased.

1 Browse to the location of the license file.

2 Verify that the serial number of the license file matches the serial number of the storage controller

module by

comparing

the

name

of

the

license

file

to

the

title

bar

of

the

Startup

Wizard.

License files use the naming convention snxxx_35_date.lic, where:

sn xxx is the serial number of the Storage Center.

35 indicates that the system runs software higher than version 3.5.

date shows the license generation date in YYMMDD format.

.lic is the file extension.

Note: The End User License Agreement is also displayed the first time any new user logs on to the Storage Center. When displayed for a new user, the EULA does not require a customer name or title.



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3 Select the license file, then click Load License. The Startup Wizard displays a message when the license is successfully loaded.

If the license loads successfully, the message The license submission has completed successfully appears.

If the message Error: The license file is not valid message is displayed, see Troubleshooting Licenses on page 52.

4 Click Continue. The Create Disk Folder page appears.



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Create Disk Folder Page

Use the Create Disk Folder page to assign disks to a folder in order to create a single pool of storage for volumes.

1 Select disks for the disk folder. By default, the Startup Wizard selects all available disks.

a Scroll through the list looking at the Position or Name column to verify that all the expected disks are listed.

If disks are missing, the issues might be fixed by following Troubleshooting Storage System Enclosures on page 51.

b (Optional) From the list of disks, select disks to include in the disk folder. By default, all disks are selected.

To exclude individual disks from the disk folder, clear the corresponding check boxes.

To include individual disks in the disk folder, click Unselect All and then select the individual disks include.

To select all disks, click Select All.

c Click Continue. The Startup Wizard displays a prompt to select disks to designate as hot spares.

Note: If the No disks could be found message is displayed, see Troubleshooting Storage System Enclosures on page 51.

Note: Dell Compellent recommends selecting all available disks to maximize the benefits of Data Progression.



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2 Review the hot spare disks selected by the Startup Wizard.

A hot spare disk is held in reserve until a disk fails, at which point the hot spare replaces the failed disk. The hot spare disk must be as large or larger than the largest disk of its type in the disk folder.

a (Optional) Change the selection by selecting or clearing disks to be used as hot spares.

b Click Continue , and if prompted, click OK to confirm. The Startup Wizard displays a summary of the disk folder that will be created.

3 (Optional) Modify the default folder name and enter a description in the Notes field.

4 (Optional) Click Advanced to configure advanced disk folder options. The wizard displays options for redundancy and datapage size.



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a Select Prepare Disk Folder for redundant storage.

b Configure the Tier Redundancy for each tier.

The redundancy level for each tier defaults to either single redundant or dual redundant depending upon the disks expected to be found in the tier. If a tier contains at least six managed disks of which one is 900GB or greater, then that tier and all tiers below it are set to dual redundant storage by default. If a tier contains at least six managed disks of 1.8TB or greater, then that tier and all tiers

below it are set to dual redundant storage and cannot be changed.

Single redundant storage protects against the loss of any one drive.

RAID 10 (each disk is mirrored)

RAID 5‐5 (4 data segments/1 parity segment per stripe)

RAID 5‐9 (8 data segments/1 parity segment per stripe)

Dual redundant storage protects against the loss of any two drives:

RAID 10 Dual Mirror (data is written simultaneously to three separate disks)

RAID 6‐6 (4 data segments/2 parity segments per stripe)

RAID 6‐10 (8 data segments/2 parity segments per stripe)

c From the Datapage Size drop‐down menu, choose a datapage size.

2 MB: (Default) Recommended for most application needs.

512 KB: Appropriate for applications with high performance needs (such as certain databases) or environments in which Replays are taken frequently under heavy IO. Selecting this size reduces the amount of space the System Manager can present to servers.

4 MB: Appropriate for systems that use a large amount of disk space with infrequent Replays (such as video streaming).

Note: The default managed disk folder settings are appropriate for most sites. If you are considering changing the default settings, contact Dell Technical Support Services for advice.



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d To configure the disk folder to use RAID 0, select the Prepare for Non‐Redundant Storage check box. Non‐redundant storage does not protect data in the event of a disk failure. Select this option only for data that is backed up some other way.

e Click Continue.

5 Click Create Now , and if prompted, click OK to confirm. The Add Controller page appears.

Add Controller PageIf the storage controller modules are configured with the correct pre‐ join information, the storage controller modules join together automatically and the following pages appear:

Caution: When considering using either the 512 KB or 4 MB datapage settings, it is recommended that you contact Dell Technical Support Services for advice on balancing resources and to understand the impact on performance.



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If the storage controller modules fail to join automatically, use the Manually Add Controller page to join the storage controller modules.

1 If the IPv6 address settings of the storage controller module are not configured, the Configure the Leader Controller’s IPv6 address values page appears.

If the management network uses IPv6:

a Enter

the

IPv6

IP

address

in

the

IPv6

Address

field.b Enter the IPv6 prefix length in IPv6 Prefix Length field.

c Enter the IPv6 gateway address values in the IPv6 Gateway field.

d Click Continue.

If the management network does not use IPv6, click Skip IPv6 Configuration.

2 Click Add Controller. The wizard prompts you for information about the second storage controller module.

3 Configure the following fields:

Controller ID: The HSN for storage controller module 2 is included in the license file and the add controller process uses that value as the Controller ID and a different value cannot be entered. If the HSN for storage controller module 2 is not in the license file, enter the HSN value. The dimmed box

in the preceding figure indicates that the HSN was in the license file making the Controller ID box

unavailable.

Ether 0 Interface: Enter the IPv4 Address , IPv4 Net Mask , IPv4 Gateway , IPv6 Address , IPv6 Prefix Length , IPv6 Gateway for the Ether 0 interface on controller module 2.

Ether 1 Interface: Enter the IP Address , Net Mask , and Gateway for the Ether 1 interface. Use the IP address from the controller show console command for storage controller module 2. (Used for communication between storage controller modules.)

Primary DNS Server: Enter the IP address of the primary DNS server.

Note: Information displayed in the following figure is for illustration only. The values displayed are unique to each Storage Center.



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Secondary DNS Server: (Optional) Enter the IP address of a secondary DNS server.

Domain Name: (Optional) Enter the domain name for the storage controller.

4 Click Continue.

The Startup Wizard displays a message that data and configuration information on the second storage controller module will be lost and asks for confirmation.

5 Click Join Now. Wait for the process to complete and for the storage controller module to reboot, which can take a few minutes. When complete, the Time Settings page appears.



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Time Settings PageUse the Time Settings page to set the system time for the SC4020.

1 Set the time zone.

a From the Region drop‐down menu, select the geographical region in which the SC4020 is located.

b From the Time Zone drop‐down menu, select the time zone in which the SC4020 is located.

2 Set the system time using one of the following methods.

To configure time manually, select Configure Time

Manually , then enter the date and time.

To configure time using a Network Time Protocol (NTP) server, select Use NTP Time Server , then enter the fully qualified domain name (FQDN) or IP address of an NTP server.

3 When the system time has been set, click Continue. The System Setup page appears.

Note: For locations in the United States, either select US as the region and select a time zone name, or select America as the region and select a city within the same time zone.

Note: Accurate time synchronization is critical for replications. Dell Compellent recommends using NTP to set the system time. For more information, see: support.ntp.org/bin/view/Support/WebHome.


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System Setup PageUse the System Setup page to set the system name and management IP address for the SC4020.

1 In the System Name field, enter a name for the SC4020. This is typically the serial number of storage controller module 1.

2 In the Management IP Address (IPv4) field, enter the management IP address specified in the pre‐installation documents.

The management IP address is distinct from storage controller module 1 and storage controller module 2 addresses. It is the address that manages an SC4020 as a whole. If either storage controller module fails, the management IP address remains valid.



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3 In the Management IP Address (IPv6) field, enter the management IP address specified in the pre‐installation documents.

4 Click Continue. The wizard prompts you to enable or disable the read and write cache.

5 Select or clear the check boxes to enable or disable read and write cache.

6 Click Continue. The Configure SMTP page appears.

Note: Disable cache only if no volumes will ever use cache. If cache is left enabled on this page, it can be disabled later for individual volumes. See the Storage Center System Manager Administrator’s

Guide for information on disabling cache on a volume‐ by‐volume basis.



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Configure SMTP PageUse the Configure SMTP page to configure the SMTP mail server and the sender email address. This configuration enables alert message emails to be sent to users who have specified a recipient address in their contact properties.

1 In the SMTP Mail Server field, enter the IP address or fully qualified domain name of the SMTP email server. Click Test server to verify connectivity to the SMTP server.

2 In the Sender E‐mail Address field, enter the email address of the sender. This address is required by most SMTP servers and is used as the MAIL FROM address of email messages.

3 (Optional) Click Advanced to configure additional SMTP settings for sites that use an advanced SMTP

configuration. The

page

for

advanced

options

appears.



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a Verify that the Enable SMTP E‐mail check box is selected.

b In the SMTP Mail Server field, verify the IP address or fully‐qualified domain name of the SMTP mail server that you entered in Step 1 on page 30. Modify this field if necessary.

c In the Backup SMTP Mail Server field, enter the IP address or fully‐qualified domain name of the backup SMTP mail server.

d Click Test server to test the connection.

e In the Sender E‐mail Address (MAIL FROM) field, verify the email address of the sender that you entered in Step 2 on page 30. Modify this field if necessary.

f In the Common Subject Line field, enter a common subject line for all emails from SC4020.

g (Optional) Select Send Extended Hello (EHLO) to configure use of extended hello for mail system compatibility.

Instead of beginning the session with the HELO command, the receiving host issues the HELO command. If the sending host accepts this command, the receiving host then sends it a list of SMTP extensions it understands, and the sending host then knows which SMTP extensions it can use to communicate with the receiving host. Implementing Extended SMTP (ESMTP) requires no modification of the SMTP configuration for either the client or the mail server.

h (Optional) Select Use Authorized Login (AUTH LOGIN) and enter the Login ID and Password if the email system requires the use of an authorized login.

4 Click Continue. The Update Setup page appears.


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Update Setup PageUse the Update Setup page to configure how SC4020 handles software updates.

1 Select an update option from the drop‐down menu:

Do not automatically check for software updates: Select this option to disable automatic checking for updates. If this option is selected, the following will still be available:

Manually check for updates by selecting Storage Management→ System→ Update→ Check for Update as described in the SC4020 System Manager Administrator’s Guide.

Change update options by selecting Storage Management→ System→ Update→ Configure Automatic Updates as described in the SC4020 System Manager Administrator’s Guide.

Notify me of a software update but do not download automatically: Select this option to automatically check for updates and receive notification when an update is available. Updates are not downloaded until you explicitly download the update. (This is the default setting.)

Download software updates automatically and notify me: Select this option to automatically download updates and receive notification when the download is complete.

Never check for software updates (Phone Home not available): Select this option to prevent the system from ever checking for updates. This option is for secure sites at which Phone Home is not available.

2 Click Continue. The User Setup page appears.



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User Setup PageUse the User Setup page to the session timeout and email addresses for the Admin account.

3 From the Session Timeout drop‐down list, select the session timeout.

4 In the Email, Email 2, and Email 3 fields, enter email addresses to which the Storage Center will send system alerts.

5 (Optional) Click Send test e‐mail to make sure that the email addresses are accurate.

6 Click Continue.

Note: Make sure the test email is received by an administrator. Storage Center uses email to send system alerts.



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Configure IO Cards PageUse the Configure IO Cards page to configure network attributes for the iSCSI ports.

The 10Gb Ethernet iSCSI ports on each storage controller module are only used for replication to another Storage Center. The iSCSI ports should not be used for front‐end connectivity to servers.

1 (Optional) Click Skip iSCSI IO Card Configuration to configure network settings for the iSCSI ports at a later time. The Configure Ports page appears.

2 Complete the IP Address , a Subnet

Mask , and a Gateway fields.

3 Click Continue.

If no messages are generated, the iSCSI port configuration is saved and the Configure Ports page appears.

If there is an issue, a message appears.

Click No

to

go

back

and

correct

the

IP

Address ,

Subnet

Mask ,

and/or

Gateway

address

for

the

iSCSI ports that generated errors and/or warnings.

Click Yes to ignore the message and continue. The Configure Ports page appears.

Note: Dell Compellent recommends that you configure the iSCSI ports during setup.



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Configure Ports PageUse the Configure Ports page to configure the front‐end and back‐end ports.

Select the Front-End Connectivity Mode

Select the front‐end connectivity mode for the Fibre Channel transport type. If virtual port mode is licensed,

the transport

types

can

be

configured

to

use

different

modes.

If

virtual

port

mode

is

not

licensed,

all

transport types must use legacy mode.

Configure Ports When Virtual Port Mode Is Not Licensed

If Virtual Ports is not licensed, the wizard informs you that the local ports have not been configured.

1 Click Continue to generate the initial port configuration.

While the initial port configuration is being generated, the Startup Wizard displays a page showing progress. After the configuration has been generated, it is automatically validated.

If the validation is successful, a confirmation page appears stating that the port configuration has been generated.

If the validation fails, a page displaying warnings appears.

If … Then …

Virtual Ports is Not Licensed All transport types use Legacy Mode. In this case, the Startup Wizard displays the Initial Port Configuration page. To continue, go to Configure Ports When Virtual Port Mode Is Not Licensed on page 35.

Virtual Ports is Licensed The FC transport type can use legacy mode or virtual port mode. In this case, the Startup Wizard displays an operational mode choice page that allows for the choice between modes for each supported transport type. To continue, go to Configure Ports When Virtual Port Mode Is Licensed on page 37.

Note: To skip port initialization or if there is no FC switch setup, click Skip Port

Initialization.



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2 Click Configure Local Ports. The wizard displays a tab for each type of IO card that is installed in the Storage Center.

3 Configure the Purpose , Fault Domain , and User Alias for all transport types. See Configure Local Ports

on page 40.

4 When you are finished configuring the local ports, click Assign Now. The wizard informs you that the port configuration has been generated.



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5 Click Continue. The Generate SSL Cert page appears.

Configure Ports When Virtual Port Mode Is Licensed

If Virtual Ports is licensed, the wizard informs prompts you to choose the front‐end connectivity mode for the Fibre Channel transport type.

1 Select the front‐end connectivity mode.

a Select the operational mode for the FC transport type.

b Click Continue to configure the selected operational mode. The wizard informs you that the operational modes have been configured.



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c Click Continue to begin port initialization in the selected operational mode.

The wizard verifies the configuration, converts selected transports to the selected mode, displays progress pages, and presents a confirmation page when operational modes for transport types have

been configured and initialized.



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d Click Configure Local Ports. The wizard displays a tab for each type of IO card that is installed in the Storage Center.

2 Configure the Purpose , Fault Domain , and User Alias for all transport types. See Configure Local Ports on page 40.

3 When you are finished configuring the local ports, click Assign Now. The wizard informs you that the port configuration has been generated.

4 Click Continue. The Generate SSL Cert page appears.



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Configure Local Ports

Configure the Purpose , Fault Domain , and User Alias for all transport types. Valid port purposes for transport types depend on whether virtual ports mode is licensed on SC4020.

Configure FC Ports — Legacy Mode on page 41

Configure FC Ports — Virtual Port Mode on page 42

Configure SAS Ports on page 43

The following table shows the port purposes for each transport type.

Port Purpose Transport Type Description

Legacy Mode

Unknown FC and SAS One of the following:

• Port purpose is not yet defined.

• The port is unused.

• (SAS and FC only) The port is used for direct‐connect interprocess communication (IPC).

Front‐End

Primary

FC Port

is

connected

to

servers

and

is

used

for

the

server

IO

path.

Front‐End Reserved FC Port is connected to servers and used as a failover path. Only used for dual‐controller Storage Centers.

Back End FC and SAS Port is connected to disk enclosures.

Direct Connect FC This port purpose is not used. Do not select it for any ports.

Virtual Port Mode

Unknown FC and SAS One of the following:

• Port purpose is not yet defined.

• The port is unused.

• (SAS and FC only) The port is used for direct‐connect

interprocess communication

(IPC).

Front End FC Port is connected to servers and is used for the server IO path.

Back End FC Port is connected to disk enclosures.



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Configure FC Ports — Legacy Mode

Use the FC tab to configure the Fibre Channel ports in legacy mode.

1 Click the FC tab.

2 Create a fault domain for each pair of redundant FC ports.

a Click Edit Fault Domains. The wizard displays a list of the currently defined fault domains.

b Click Create Fault Domain. A dialog box appears.

c In the Name field, type a name for the fault domain.

d From the Type drop‐down menu, select FC.

e (Optional) In the Notes field, type a description of the fault domain.

f Click Continue. The dialog box displays a summary.

g Click Create Now to create the fault domain.

h Repeat steps b–g as needed to create additional fault domains.

i When you are finished creating fault domains, click Return. The FC tab appears.

3 Configure each back‐end FC port.

a Set the Purpose field to Back End.

b Confirm that the Fault Domain field is set to .

c (Optional) Type a descriptive name in the User Alias field.

4 Configure each front‐end FC port.

a Set the

Purpose

field

to

Front

End

Primary

or

Front

End

Reserved

as

appropriate.

b Set the Fault Domain field to the appropriate fault domain that you created.


5 Configure each port that is unused or used for IPC between storage controller modules.

a Set the Purpose field to Unknown.




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Configure FC Ports — Virtual Port Mode

Use the FC tab to configure the Fibre Channel ports in virtual port mode.

1 Click the FC tab.

2 Create a fault domain for each FC fabric.

a Click Edit Fault Domains. The wizard displays a list of the currently defined fault domains.

b Click Create Fault Domain. A dialog box appears.

c In the Name field, type a name for the fault domain.

d From the Type drop‐down menu, select FC.

e (Optional) In the Notes field, type a description of the fault domain.

f Click Continue. The dialog box displays a summary.

g Click Create Now to create the fault domain.

h Repeat steps b–g as needed to create additional fault domains.

i When you are finished creating fault domains, click Return. The FC tab appears.

3 Configure each back‐end FC port.




4 Configure each front‐end FC port.

a Set the

Purpose

field

to

Front

End.

b Set the Fault Domain field to the appropriate fault domain that you created.


5 (Optional) Change the preferred physical port for one or more virtual ports.

a Click Edit Virtual Ports. The wizard displays a list of virtual ports.

b For each virtual port that you want to modify, select the preferred physical port In the Preferred Physical Port.


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c When you are finished, click Apply Changes.





Configure SAS Ports

Configure the back‐end SAS ports.

1 Click the SAS tab.

2 Configure each

back

‐end

SAS

port.










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Generate SSL Cert PageUse the Generate SSL Cert page to generate a new Secure Socket Layer (SSL) certificate or import an existing certificate for the SC4020. The SSL certificate must match the SC4020ʹs IP Address or DNS host name.

The initial certificate shipped with the SC4020 may not match the IP address or DNS host name assigned to the SC4020. If this is the case, when connecting to SC4020, a message is displayed identifying a mismatch

between the

certificate

and

the

IP

address

or

DNS

host

name

of

the

SC4020.

Import

or

generate

a certificate

to correct this.

Caution: Do not click Skip to bypass this page. Clicking Skip can result in connection disruptions to Storage Center System Manager.



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Import a Certificate

If an SSL certificate has already been generated, import the certificate.

Prerequisites

The public key file must be in x.509 format.

Steps

1 Click Import. A file browser appears.

2 Browse to the location of the public key (*.pem) file and select it.

3 Click Next.

4 Browse

to

the

location

of

the

private

key

file

(*.pem).5 Click Next. A Summary page appears that identifies the key files selected.

6 Click Save to import the certificates.



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Create a New Certificate

If you do not already have a certificate that contains the Storage Center host name or IP address, generate one now.

1 Click Generate. The wizard prompts you to enter the IP addresses and host names for the Storage Center.

2 In the text field, enter all DNS host names, IPv4 addresses, and IPv6 addresses for this SC4020, separated by commas. The wizard prepopulates the field with information it knows, but it is likely that more site‐specific host names and addresses need to be entered.

3 Click Generate Now. A new certificate is generated and the session ends. To continue, refresh the browser and log on to the SC4020 again.

Perform Post-Setup TasksPerform connectivity and failover tests to make sure that the deployment was successful, then change administrative passwords, Phone Home, and check for updates.

Verifying Connectivity and FailoverThis section describes the general steps needed to verify that Storage Center is set up properly and will failover correctly. The process includes connecting a server and copying data to verify connectivity, and shutting down a storage controller module to verify failover and MPIO functionality. For details about each step, refer to the Storage Center System Manager Administrator’s Guide.

Caution: The host names and addresses must match this Storage Center or you will not be able to reconnect to it.



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Create Test Volumes

Connect a server to the Storage Center, create one or more test volumes, and map them to the server to prepare for connectivity and failover testing.

1 Connect a server to the Storage Center using Fibre Channel.

2 Start a web browser on a computer on the Storage Center management network.

3 Log in to Storage Center System Manager.4 Define the server in System Manager.

a In the System Tree, select Servers.

b Click Create Server. The Create Server wizard appears.

c Select the server HBAs in the table, then click Continue.

d In the Name field, type a name for the server.

e From the Operating System drop‐down menu, select the operating system that the server is running.

f Click Continue. The wizard displays a summary.

g Click Create Now. The wizard displays a list of optional actions.

h Click Close. The wizard closes.

5 Create a 25GB test volume called TestVol1.

a In the System Tree, select Volumes.

a In the Create Server wizard, click Create Volume. The Create Volume wizard appears.

b Set the volume size to 25GB, then click Continue.

c Click Continue to apply the default Replay Profile.

d Type TestVol1 in the Name field, then click Continue. The wizard displays a summary.

e Click Create Now. The wizard displays a list of optional actions.

f Click Close.

6 Repeat Step 5 to create a second test volume named TestVol2.

7 Map TestVol1 to storage controller module 1.a In the System Tree, expand the Volumes node.

b Select TestVol1.

c Click Map Volume to Server. The Map Volume to Server wizard appears.

d Select the server, then click Continue. The wizard displays a summary.

e Click Advanced. The wizard displays advanced mapping options.

f In the Restrict Mapping Paths area, select the Map to controller check box, then select the storage controller module from the drop‐down menu.

g Click Continue. The wizard displays a summary.

h Click Create Now. The mapping is created and the wizard closes.

8 Repeat Step 7 to map TestVol2 to storage controller module 2.

9 On the server, partition and format the test volumes.

Test Connectivity and Failover

Copy data to the test volume and simulate failures to test connectivity and failover.

Test Basic Connectivity

Verify connectivity by copying some data to the test volumes.


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Test Storage Controller Module Failover

Perform a test to make sure that IO is not interrupted by a storage controller module failover.

1 Create a Test folder on the server and copy at least 2GB of data into it.

2 Manually shut down storage controller module 1 while copying data to TestVol1 to verify that IO is not interrupted by the failover event.

a Copy the Test folder to the TestVol1 volume.b During the copy process, shut down storage controller module 1 (the storage controller module

through which the volume is mapped).

c Verify that the copy process continues after the storage controller module is shut down.

d After the copy finishes, turn on the storage controller module.

e Wait 3 minutes and verify that the storage controller module has finished starting.

f Rebalance the ports.

3 Manually shut down storage controller module 2 while copying data to TestVol2 to verify that IO is not interrupted by the failover event.

a Copy the Test folder to the TestVol2 volume.

b During the

copy

process,

shut

down

storage

controller

module

2 (the

storage

controller

module

through which the volume is mapped).

c Verify that the copy process continues after the storage controller module is shut down.

d After the copy finishes, turn on the storage controller module.

e Wait 3 minutes and verify that the storage controller module has finished starting.

f Rebalance the ports.

Test MPIO

If the network environment and servers are configured for MPIO, perform tests to make sure that failed paths do not interrupt IO.

1 Create a Test folder on the server and copy at least 2GB of data into it.

2 Make sure that the FC server is configured to use load balancing MPIO (round‐robin).

3 Manually disconnect a path while copying data to TestVol1 to verify that MPIO is functioning correctly.

a Copy the Test folder to the TestVol1 volume.

b During the copy process, disconnect one of the paths and verify that the copy process continues.

c Reconnect the port.

4 Repeat Step 3 as necessary to test additional paths.

5 Restart the storage controller module that contains the active path while IO is being transferred.

6 If the Storage Center is not in a production environment, restart the switch that contains the active path while IO is being transferred.

Clean up Test VolumesAfter testing is complete, delete the volumes used for testing.


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Change Administrative PasswordsStorage Center ships with default administrative credentials. As a security measure, change the administrative password before putting the Storage Center into production.

1 From the Storage Management menu, select User→ Change User Password.

2 Select Admin and click Continue.

3 Enter a new password in the Enter Password and Reenter Password fields.

4 Click OK.

Configure a Phone Home ProxyIf requires hosts to use a proxy server to reach the internet, configure Phone Home to use the proxy server

before sending data with Phone Home or checking for SC4020 updates.

1 From the Storage Management menu, select System→ Phone Home→ Configure Phone Home Proxy. The Configure Phone Home Proxy wizard starts.

2 Select Use Phone Home Proxy Server and enter the following:

Proxy Server Address: Enter the IP address of the proxy server.

Port: Enter the TCP port number of the proxy server.

Proxy User Name: Enter the user name for the proxy server.

Proxy Password/Confirm Password: Password for the proxy server.

3 Click OK.



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Phone HomeComplete setup by sending SC4020 configuration information to Dell Technical Support Services with Phone Home.

Phone Home sends a copy of a SC4020 configuration to Dell Technical Support Services to enable them to support a SC4020. The initial configuration is sent to Dell Technical Support Services when SC4020 is

installed.Prerequisites

TCP ports 22 and 443 must be allowed outbound to the Internet.

If the network requires hosts to use a proxy server to reach the Internet, the Storage Center must be configured to use a Phone Home proxy.

Steps

1 From the Storage Management menu, select System→ Phone Home→ Phone Home. The Phone Home wizard starts, listing any previous Phone Home events.

2 Click Phone Home Now. The Phone Home In Progress dialog box is displayed.

3 Click OK.

4 When the State column lists all items with Success , click Close.



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Check for Storage Center UpdatesAfter completing the SC4020 setup, if the Storage Center System Manager did not display a message of available updates, manually check for available Storage Center updates.

1 From the Storage Management menu, select System→ Update→ Update Status.

2 Click Check Now. As Storage Center checks for updates, status appears on the Update Status page.

3 If an update is available, install the update following the instructions in the Storage

Center

System

Upgrade

Guide.

Next StepsAfter installation is complete, you might want to perform some basic tasks to configure Storage Center for your environment. These tasks are configuration‐dependent so some might not apply to your site.

See the Storage Center Administrator’s Guide for detailed configuration instructions, including how to:

Set storage controller module and system IP addresses for IPv6 (This must be done if using IPv6 addressing)

Manage unmanaged disks

Add Storage

Center

users;

including

configuring

Lightweight

Directory

Access

Protocol

(LDAP)

Configure password rules for local users.

Create servers

Configure User Volume Defaults

Add Storage Center volumes

Add a login message

TroubleshootingThis appendix contains troubleshooting steps for common problems.

Troubleshooting the Serial Connection

Troubleshooting Storage System Enclosures

Issue Possible Reason Solution

Unable to connect to a storage controller module with a serial connection

Communication problems. • Reseat or replace cables.

• Verify the telnet settings.


No Disks Found by Startup Wizard:

No disks could be found attached to this Dell Compellent Storage Center.

Need to update software and/or firmware to use drives

1 Click Quit.2 Check for Storage Center Updates on page 51

3 Complete the Startup Wizard on page 19.

Expected Disks are Missing Need to update software and/or firmware to use drives.

1 Check drive LEDs.

2 Check for Storage Center Updates on page 51.



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Troubleshooting Licenses

Troubleshooting Updates


Error: The license file is not valid (could be old license file). Contact Dell Technical Support Services for a new license file.

Can happen with a dual‐controller Storage Center if there is an attempt to apply the license file before the storage controller modules are joined and the license file is applied to the storage controller module with the wrong serial number.

Make sure that all the steps in Set Up Software Center Software on page 12 are followed in order and try again.

• Make sure to connect to the IP address of the storage controller module with the lower serial number.

• Make sure the serial number in the name of the license file matches the storage controller module.


Cannot complete Startup

Wizard and cannot check for updates

Your network might employ a

proxy server, Configure Phone Home Proxy Server Using the Command Line Interface (CLI).

1 Establish a serial connection to the Storage

Center. 2 Run the following commands:

mc values set UsePhHomeProxy true

mc values set PhHomeProxyString

[ proxy server IP address]

mc values set PhHomeProxyUserName

[ proxy server user name]

mc values set PhPomeProxyPassword

[ proxy server password ]

3 Check for Storage Center Updates on page 51.

4 Complete the Startup Wizard on page 19.

Documents

SC4020 Qual Units Deployement Guide