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ed 04/2 S PRO Nov Prep 6/2007 – TH TOR OPOSAL vember 2011 pare by, Jl. Galur HIS COVER RAGE Sari Timur Tlp R LETTER E RE PT. DEW ur Raya No In lp : 021 850 www.d WILL NOT EPLIC WADARU A 2, Utan Ka Indonesia 07865/ 021 dewadaru. T BE INCLU CATI ADITECHPR ayu Selatan 1 85905525 .com UDED IN BP ON RIMA an 13120 Ja P VERSION akarta, N

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Page 1: Storage Replication Ds5020

ed 04/2

S PRO Nov Prep

6/2007 – TH

TOR

OPOSAL

vember 2011

pare by,

Jl. Galur

HIS COVER

RAGE

Sari Timur

Tlp

R LETTER

E RE

PT. DEWur Raya No

Inlp : 021 850

www.d

WILL NOT

EPLIC

WADARU A 2, Utan Ka

Indonesia 07865/ 021 dewadaru.

T BE INCLU

CATI

ADITECHPRayu Selatan

1 85905525 .com

UDED IN BP

ON

RIMA an 13120 Ja

P VERSION

akarta,

N

Page 2: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. i

Table of Contents

Table of Contents .................................................................................................................................. i Executive Summary ............................................................................................................................. 2 

Our Understanding of Your Goals ................................................................................................... 2 Our Approach to Meeting Your Goals ............................................................................................. 2 Solution Overview ............................................................................................................................ 2 Why IBM? ........................................................................................................................................ 3 

IBM System Storage Disk Systems .......................................................................................... 3 IBM Tivoli Storage Manager ...................................................................................................... 5 

About IBM ............................................................................................................................................. 6 IBM Profile ....................................................................................................................................... 6 

Information About IBM ............................................................................................................... 6 IBM Local Representative Office ............................................................................................... 7 

Requirements ....................................................................................................................................... 8 Proposed Solution ............................................................................................................................... 9 

Solution Approach ........................................................................................................................... 9 Solution Design : IBM System Storage DS5000 series ........................................................... 9 Solution Design 2 : IBM System Storage Storwize V7000 ...... Error! Bookmark not defined. 

Scope of Work ............................................................................................................................... 10 Schedule of Work ............................................................................................................................... 12   Bill of Material .............................................................................................................................. 13 

Appendix - Product Overview ........................................................................................................... 14 IBM Systems Storage DS5000 series ........................................................................................... 14 IBM Tivoli Storage Manager .......................................................................................................... 18 

Page 3: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 2

Executive Summary

Our Understanding of Your Goals With fewer IT resources, the need to manage critical data and applications, as well as

government regulations, businesses face tremendous IT challenges due to high cost and

business impact of planned and unplanned outages and disruptions. The cost and

complexity of architecting, implementing, and managing enterprise storage infrastructures

can be substantial. And when the needs of the dynamic enterprise inevitably change

often quickly and even dramatically static systems require reprovisioning, which causes

disruption and increases management overhead and risk. To address this, IT

organizations often must overprovision allocating more storage resources than may

actually be needed

Our Approach to Meeting Your Goals IBM propose IBM System Storage Disk Systems, IBM Systems Network Area Storage as

a solution to answer your business’ requirements. This solution provides a

comprehensive set of robust management and operational tools as well as high

availability features, disaster recover and data copy services that help the system

administration provide a high level of support for environments requiring fibre channel

storage solutions.

Solution Overview The IBM®System Storage®DS5000 series is designed to meet today’sand tomorrow’s

demanding open-systems requirements while establishinga new standard for life cycle

longevity. Building on many decades ofdesign expertise, the DS5000 storage system’s

architecture delivers industry-leading performance, real reliability, multidimensional

scalabilityand unprecedented investment protection.

IBM Tivoli Storage Manager 6 manages data stores in a hierarchy that balances costs with performance, helping **CUSTOMER** conserve resources as automated policies

Page 4: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 3

migrate data to the appropriate media type. Its open application programming interface (API) provides the ability to seamlessly manage many types of data. The solution provides:

Simplified deployment and management of the data protection environment, including management of Tivoli Storage Manager FastBack and Tivoli Storage FlashCopy® Manager from a single interface.

Superior functions for managing data, utilizing an integrated IBM DB2® relational database and transaction log.

Generation, encryption, storage, and management of encryption keys for clients and application modules, while compressing and encrypting data that is being moved into the hierarchy of storage.

Features that facilitate backup and recovery, including disk storage pools, backup sets, volume level backups, and an integrated approach to protection of VMware® and Microsoft® Hyper-V environments.

Data protection on network-attached storage (NAS) devices using network data management protocol (NDMP) and advanced integration with IBM nSeries and Network Appliance (NetApp) systems.

A customizable dashboard with graphical views, allowing reports to be generated in multiple formats including HTML and Adobe® Portable Document Formatting (PDF).

Built-in source and target data deduplication capabilities to help eliminate redundant files and subfiles.

Why IBM? To stay competitive in the global marketplace, your people need to have access to the

right information at the right time in order to be effective, creative and highly innovative.

IBM offers a comprehensive portfolio of SAN switches, storage, software, services and

solutions to reliably bring information to people in a cost effective way. IBM provides

flexible, scalable and open standards-based business-class and global enterprise-class

storage networking solutions for the on demand world

IBM System Storage Disk Systems The DS5000 storage systems are equally adept at supporting transactional applications

such as databases and On Line Transaction Processing OLTP, throughput-intensive

applications such as high-performance computing (HPC) and rich media, and concurrent

workloads for consolidation and virtualization. With relentless performance and superior

reliability and availability, DS5000 series storage systems can support the most

Page 5: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 4

demanding service level agreements (SLAs) for the most common operating systems,

including Microsoft® Windows®, UNIX® and Linux®. And when requirements change,

you can add or replace host interfaces, grow capacity, add cache and reconfigure the

system on the fly—ensuring that it will keep pace with your growing company.

This multidimensional scalability allows a DS5000 series storage system to extend

beyond the normal three- to four-year life cycle, protecting your storage investment by

delaying (or even eliminating) the expense of migrating data to a new system and

allowing you to amortize acquisition costs over extended periods of time. This life-cycle

longevity enables DS5000 storage systems to continue delivering value long after other

systems have been retired. With drive-level encryption DS5000 series systems support

affordable data security with no performance penalty. And the DS5000 storage system’s

multiple replication options, drive level encryption, and persistent cache backup can help

ensure that any data in cache is captured and safe in the event of a power outage.

Highlights

• Balanced performance - up to 700,000 IOPs and 6400 Mbps - is well-suited for

virtualization and consolidation

• Scalable up to 448 drives using the EXP5000 enclosure and up to 960 TB of

high-density storage with the EXP5060 enclosure

• Support for intermixing drive types—FC, FC-SAS, SED, SATA and SSD—and

host interfaces—Fibre Channel and iSCSI—for investment protection and cost-

effective tiered storage

• Central management of all IBM System Storage DS series products while

maximizing utilization and lowering costs

• Designed to support high availability with hot-swappable components and non-

disruptive firmware upgrades

• Supports IBM AIX and Power Systems T10-PI Data Integrity Initiative

Page 6: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 5

IBM Tivoli Storage Manager

IBM understands that data storage can be a time-consuming and expensive process.

IBM Tivoli Storage Manager 6 can provide **CUSTOMER** with a next-generation data

storage and recovery management solution, helping you control costs and save time. The

solution offers built-in ease-of-use features and integrates with many operating system

versions and hundreds of devices for maximum flexibility.

Tivoli Storage Manager 6 is part of an extended portfolio of products that work together

seamlessly and extend the value of your investments in Tivoli software. This family of

offerings includes solutions for protection and recovery of:

IBM Lotus® Domino® and Microsoft® Exchange data

SAP R/3, Oracle and Microsoft SQL data

Microsoft SharePoint® business data and content

Microsoft Windows®, RedHat Linux® and SUSE Linux servers and files

These solutions also provide continuous data protection and recovery, bare machine

recovery and snapshot backups, delivering capabilities to meet the unique needs of your

organization.

Page 7: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 6

About IBM

IBM Profile

Information About IBM International Business Machines Corporation (“IBM”) is the world’s largest business

consulting services and information technology provider organization with over 420,000

professionals across the world in 160 countries. IBM mission is simple: We strive to lead

in the creation, development and manufacture of the industry's most advanced

information technologies. We translate these advanced technologies into value for our

customers through our professional solutions, services and consulting businesses

worldwide.

IBM was incorporated in 1891 (in New York) as the Computer-Tabulating-Recording

Company with a product line that included clocks, scales and punch card tabulators. In

1924, the company changed its name to International Business Machines (IBM),

reflecting its growing operations in Europe, South America, Australia and Asia Pacific.

With 90 years of leadership in helping businesses innovate, today IBM is the world’s

largest information technology company; offer a range of integrated solutions, products

and services unmatched by any other IT company.

IBM total assets were $ 109,524 million in 2008, $120,431 million in 2007. IBM total

revenue was $ 103,630 million in 2008, $98,786 million in 2007, and US$ 91,424 million

in 2006. RD&E expense was $6,337 million in 2008, $6,153 million in 2007 and $6,107

million in 2006.

The company incurred expenses of $6,015 million in 2008, $5,754 million in 2007 and

$5,682 million in 2006 for scientific research and the application of scientific advances to

the development of new and improved products and their uses, as well as services and

their application. Within these amounts, software-related expense was $3,359 million,

$3,037 million and $2,842 million in 2008, 2007 and 2006, respectively. In addition,

Page 8: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 7

included in the expense was a charge of $24 million in 2008 and $7 million in 2006 for

acquired IPR&D.

Expense for product-related engineering was $322 million, $399 million and $425 million

in 2008, 2007 and 2006, respectively.

More information about IBM can be found in the WEB site http://www.ibm.com

IBM Local Representative Office On May 26, 1937, IBM began operations in Indonesia under the name of Watson Bedriffs

machine Java NV. The first machine we sold was a data processing machine to Staat

Spoorwagens - a government owned Train Company in Bandung - during the first era of

computerization in Indonesia.

In 1953, Watson Java NV became IBM Indonesia Ltd, NV with 11 employees, of which 8

were Indonesian. And the number of IBM customers continued to grow. IBM Indonesia

Ltd NV continued its operations until the set up of PT USI Jaya as a special agent for IBM

in Indonesia, under government regulations at that time requiring all foreign companies

has to be represented by a local partner.

The year 2000 marks an important milestone for IBM in Indonesia. In 1999, IBM applied

for and received government approval to set up PT IBM Indonesia, a wholly-owned

subsidiary of IBM World Trade Corporation. PT IBM Indonesia is responsible for the sales

and marketing activities for IBM hardware, software products and services in the country.

As of December 2009, IBM Indonesia has more than 500 employees, and we have

moved to our new office building at The Plaza Building in Plaza Indonesia Super Block

Complex.

IBM wants to bring the latest technology and transfer skills to its local business partners

and customers in the marketplace, responding quickly to their IT requirements. This is a

major strategic step to enhance our leadership position in Indonesia and this initiative has

been received warmly by business partners and customers in the country and in the

region. More information about IBM Local Representative can be found in WEB site

http://www.ibm.com/id/

Page 9: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 8

Requirements Musashi , which current IT environment is complex with multiple components required to

deliver business solutions. The conditions are :

Masahi have 1 (one) server for each site DC and DRC.

Data will be put in external disk

Data will be replicate to DRC site

Tivoli Storage Manager will be managed replication from DC to DRC

Page 10: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 9

Proposed Solution Storage Replication are solution that we propose for MUSASHI.

Solution Approach Based on requirements above, we provide the solution which points to 3 (three) items, as

follows :

Storage with disk system for data from camera

Propose Business Continuity Solution as foundation to achieve continuity of

business operations

Deliverable :

External Disk using IBM DS5300

Capacity usable 50 TB with RAID 5 @600GB 15K Rpm 4 GbpsFC DDM

Back-up Management using IBM Tivoli Storage Manager

Solution Design : IBM System Storage DS5000 series

Layout Connection

Page 11: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 10

The detail of the solution are :

Storage will be direct connect to server

The server will produced Data

All Data from server will be put into External Disk.

Storages will places in DC site (Cikarang) and DRC site (Karawang). DC site needs a

storage because there is no place to put their data right now. Storage at Cikarang

will be functioned as centralized storage. And Storage at Karawang will be back-up

Storage.

Create 1 (one) volume at external disk for data. (quatinty of volume depend on

customer)

The created Volume will be map to server

Server will recognize new volume from storage

Data at External Disk will be replicate to External Disk at DRC site. The process will

be managed by Tivoli Storage Manager.

Server at DC site will be install TSM Manager because data will replicate from DC

site

Server at DRC site will be install TSM Agent because target of replicate Data is on

storage DRC site.

Each server will be comunicated.

If there is problem, data can be restore from External Disk at DRC site via TSM

Scope of Work Scope of work : Hardware delivery to MUSASHI

All delivery will be covered by insurance

Plan and Design

Installation, Testing and Commissioning for :

o 1 (one) unit of IBM DS5020 for each site DC and DRC,

Setup external storage (disk) to server

Training.

Warranty : 3 years, 24x7

Page 12: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 11

Out of Scope : Setup Network communication (IP, internet connection between Site) Rack system are not included Site preparation - Power outlet, AC are provided by MUSASHI

Page 13: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 12

Schedule of Work Implementation estimation :

Delivery hardware : 4-6 weeks

Installation hardware : 3-5 days

TSM installation and setup : 3 days

Monitoring and UAT (User Acceptance Test) : 3 days

Documentation and Project Closing : 3 days

Training

o Training schedule can be discuss base on MUSASHI needs

Page 14: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 13

Bill of Material

Product  Description  Qty    DC    1814‐20A  DS5020 Midrange Disk (Dual Controllers)  1 

2070 Add 2 GB to Cache Memory  1 4201 DS5020 300GB/15K 4Gbps FC DDM  16 5605 5m Fiber Optic Cable LC‐LC  4 7801 DS5020 Windows Host Kit  1 8701 DS5020 4 Stg Partit. IPO  1 9202 Field Integrate  1 9820 Power Cord 250V/10A, (Group 2)  1 

           DRC    1814‐20A  DS5020 Midrange Disk (Dual Controllers)  1 

2070 Add 2 GB to Cache Memory  1 4201 DS5020 300GB/15K 4Gbps FC DDM  16 5605 5m Fiber Optic Cable LC‐LC  4 7801 DS5020 Windows Host Kit  1 8701 DS5020 4 Stg Partit. IPO  1 9202 Field Integrate  1 9820 Power Cord 250V/10A, (Group 2)  1 

Page 15: Storage Replication Ds5020

Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 14

Appendix - Product Overview

IBM Systems Storage DS5000 series Designed to seamlessly adapt to change

With industry-leading performance, reliability and robust stor-age management, DS5000

storage systems can add or replacehost interfaces, increase performance, grow capacity

and addcache to deliver unprecedented life cycle longevity and invest-ment protection as

your business grows.

Relentless performance

DS5000 storage systems deliver unprecedented performance in a family of industry-

leading technology. With seventh-generation architecture the systems are optimized to

powerfaster, more responsive applications—increasing productivity,improving customer

satisfaction and meeting SLAs. And withlinear scalability, DS5000 series systems are

designed to meetthe most demanding application and growth requirements.

Trusted storage to protect and deliveryour data

Built with a goal of the highest reliability and availability,DS5000 series storage systems

offer redundant components,automated input/output I/O path failover, and extensive

onlineconfiguration, reconfiguration and maintenance capabilities,helping to ensure that

your data is available virtually 24x7x365.DS5000 storage systems are designed to help

protect storeddata as well:

DACstore technology stores configuration metadata on each drive.

Proactive Drive Health Monitoring (PDHM) technologyidentifies faulty drives

before they create problems.

RAID 6 technology guards against concurrent drive failuresand errors.

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Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 15

Persistent cache backup ensures that data in the cache is cap-tured and safe in

the event of a power outage.

Full disk encryption ensures that data is protected throughoutthe drive’s life cycle.

Address a wide range of storage needs

IBM DS Storage Manager software provides unparalleled con-figuration flexibility to

ensure that your DS5000 series storagesystem is configured to meet your application’s

logical unitnumber (LUN) requirements. DACstore technology allowsdrives to be

relocated with data intact as requirements change.Support for intermixing high-

performance and high-capacity drives creates tiered storage in a single system. And the

bal-anced performance offered by the DS5000 storage systemexcels at both IOPS and

MB/sec. This extensive flexibilitymakes DS5000 storage systems a great choice for

storage consolidation implementations where an individual storage system supports

concurrent and diverse workloads and application requirements.

Maximize utilization and minimize TCO

As data continues to grow, companies must be able to efficientlymanage their storage

while minimizing total cost of ownership(TCO). The unparalleled configuration flexibility of

DSStorage Manager software creates superior utilization—gettingthe most usable

capacity out of the purchased capacity, whilemaximizing performance efficiency. DS

Storage Manager software offers centralized administration of all DS StorageManager-

based systems, providing a common interface acrossall products and platforms. DS

Storage Manager software alsooffers a unique blend of robust functionality with

intuitivegraphical user interface (GUI) and wizards to ensure that stor-age is easily and

optimally configured.

Efficiencies to cut purchase andoperational IT costs

DS5000 storage systems offer a modular design, giving you anaffordable entry point with

seamless “pay-as-you-grow” scala-bility as your requirements change. Efficient storage

utilizationlowers raw capacity requirements and supports intermixinghigh-performance

and high-capacity drives to enable tieredstorage. Like all IBM storage systems, the

DS5000 storage system’s exceptional per-drive performance creates value by getting the

most performance out of the fewest drives. Thisreduces the number of drives needed to

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Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 16

meet performance andcapacity demands—supporting IBM’s commitment to

greentechnologies.

Highest performance member of theproven IBM System Storage family

DS5000 series storage systems are driven by field-provenfirmware, enabling common

features, functionality and manage-ment interface across all DS Storage Manager-based

systems.This commonality enables lower TCO by reducing manage-ment complexity and

offering centralized administration.What’s more, the DS5000 series storage system

continues ourlong-standing tradition of unparalleled investment protection.DACstore

technology consistently stores configuration meta-data on every configured drive. This

unique design creates data-intact drive portability—supporting drive-level

reconfigurationsand controller-level upgrades as system requirements change.Drives can

be relocated within the storage system to improvechannel utilization and protection, or

even migrated as a com-plete volume group into another IBM DS5000 storage system.

Additional tools to help manage storage

DS5000 series storage systems are supported by a variety ofIBM Tivoli®software

products. Tivoli Storage Manager, Tivoli Storage Resource Manager and many other

third-partyhardware and software products can add to the capabilities ofyour system by

enabling backup and storage reporting.Support for the new Tivoli Storage Productivity

Center forDisk Midrange Edition V4.1 is designed to provide storagedevice configuration,

performance monitoring and management of Storage Area Network (SAN)-attached

devices from a singleconsole. In addition, it includes performance monitoring capabilities

for the DS3500 storage system.Tivoli Storage Productivity Center for Disk Midrange

Edition V4.1:●

Offers continuous real-time monitoring and fault identifica-tion to help improve SAN

availability.

Provides performance reporting across multiple arrays from asingle console.

Helps monitor metrics such as throughput, I/O and data ratesand cache utilization.

Receives timely alerts that can enable event action based onyour policies when

thresholds are exceeded.

Helps improve storage return on investment (ROI) by help-ing keep SANs reliably

and dependably operational.

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Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 17

Can reduce storage administration costs by helping simplifythe management of

complex SANs.

IBM funds IT

With fair market value leases for hardware products such asSystem Storage, IBM Global

Financing’s residual value positionhelps lower the acquisition cost, so effectively you only

pay foryour use of the asset. Financing can convert up-front costs intoa stream of

monthly payments that make budgeting easier andpredictable.

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Storage Replication Proposal

© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 18

IBM Tivoli Storage Manager Today’s e-businesses face an expanding set of data storage challenges as organizations

use a wider variety of computing platforms. IT administrators are stretched thin by the

needs of local and mobile users, customers and partners. And as systems become more

complex and integrated, the opportunities for catastrophic data loss multiply.

Not employing a centralized, automated data protection system involves numerous risks.

Data loss can greatly endanger productivity, drain valuable financial and human

resources and strain client/customer relationships. Key business applications might

become unavailable, and confidential proprietary information might be compromised.

IBM® Tivoli® Storage Manager provides a powerful suite of automated tools for

enterprisewide data protection. With this comprehensive functionality, Tivoli Storage

Manager can help your organization protect its information and maximize the availability

of key applications. Tivoli Storage Manager can help you:

• Save valuable resources—By offering comprehensive, resilient data protection, Tivoli

Storage Manager can help minimize the probability of data loss and help maximize the

productivity of your business resources.

• Simplify and automate data protection—Tivoli Storage Manager greatly simplifies the

task of data protection through automated functions such as data backup/restore,

managed data archive/retrieve, disaster preparation planning and recovery and

hierarchical storage management.

• Integrate protection across disparate systems—As a client/server application, Tivoli

Storage Manager supports more than a dozen different operating systems as clients and

more than six as data protection servers. It performs equally well on laptops and

mainframes across WANs, LANs, SANs and the Internet.

Tivoli Storage Manager capabilities Tivoli Storage Manager has several key technical features that make it flexible, efficient

and easy to operate:

• Centralized management—Tivoli Storage Manager is a client/server application

capable of managing thousands of clients with a few servers. It uses a flexible hierarchy

of administrators to reflect business processes or organization.

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© Copyright IBM Corporation 2011, Use or disclosure of data contained on this page is

subject to the restriction in the disclosure statement of this document. 19

• Intelligent data movement—Tivoli Storage Manager uses multiple techniques to

minimize data transfer sizes and the time required for data backups and data restores.

• Policy-based automation—Tivoli Storage Manager lets you implement granular policy

management for fully automated data protection, allowing a single administrator to handle

data protection for hundreds or thousands of client computers.