View
218
Download
0
Embed Size (px)
Citation preview
NearStore VTL Technology Advantages
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.2
18-Sep06
Key VTL Feature Comparison
Feature NetApp EMC DL Sun/STK IBM VTS Fujitsu-
Siemens HDS
Hardware Compression Yes Yes No Yes Yes No
Self-tuning Yes No No No No No
Direct Tape Creation Yes
Yes, uses up to 2x
more tapes
Yes, uses up to 2x
more tapes
Yes, uses up to 2x
more tapes
Yes, non-standard
tape formatNo
Shadow Tapes Yes No No No No No
Tape Smart Sizing Yes No No No No No
Total Technology ownership
YesNo - OEMs FalconStor
VTL SW
No - OEMs FalconStor
VTL SW
No - OEMs FalconStor
VTL SW
No - OEMs EMC disk
array
No - resells Diligent VTL SW
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.3
18-Sep06
NearStore VTL advantages
Scalability– From 5TB – 512TB without any “forklift” replacement
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement Investment Protection
– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.4
18-Sep06
NearStore VTL hardware compressionvs. VTL’s using software compression
Primary storage protected during a backup window, 2:1 data
NearStore VTL with HW compression
Competing VTL with SW compression
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
Pri
mar
y S
tora
ge
(TB
)
4 8 12 16 20 24
Backup Window (hours)
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.5
18-Sep06
NearStore VTL advantages
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement
Investment Protection– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.6
18-Sep06
Other VTLs require manual tuning
Other VTLs
Backup StreamsVirtual tapes reside
at fixed locations
Static load balancing does not prevent hot spots
Ongoing manual tuning is required
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.7
18-Sep06
NearStore VTL self-tuning technology
60MB/s
Dynamically BalancedBackup Streams Virtual tapes do not
reside at fixed locations
Backup streams are dynamically load balanced across disk LUNs
Provides optimal performance without tuning
NearStore VTL
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.8
18-Sep06
NearStore VTL self-tuning technology
60MB/s
Dynamically BalancedBackup Streams
Backup streams are automaticallyre-balanced as the backup load changes
NearStore VTL
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.9
18-Sep06
RAID Group 2
What happens when a disk fails?Why it is important to be integrated at the RAID layer
RAID Group 1
1: RAID group becomes degraded• Single drive failure occurs
2: VTL OS redirects write activity to other RAID groups• Degraded RAID group becomes read-only
3: Fast rebuild• Rebuild ignores empty space and reconstructs only the data using VTL OS parity
RAID Group 3 RAID Group x. . .
4: RAID group is back online 4x to 20x faster than competing VTL
systems
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.10
18-Sep06
NearStore VTL RAID group rebuildsFast rebuilds reduce the risk of data loss
VTL600 CDL710
Reduced riskof data loss
Increased riskof data loss
RAID Rebuild Time Comparison
0.68
19.38
0
20
HoursRequired
Source: Veritest Performance Comparison, July 2006
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.11
18-Sep06
NearStore VTL advantages
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement
Investment Protection– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.12
18-Sep06
The VTL copies to tape Backup application manages retention
policies and tracks tape locations Improves tape drive performance Reduces wear on tape media Reduces the need to multiplex backups Reduces the load on backup servers Reduces complexity
Backup Server
Tape Library
VTL
Backup Server
Tape Library
VTL
1 2
The backup server copies to tape Backup application manages retention policies and
tracks tape locations Requires the server to process every backup twice Reduces CPU cycles available for primary backup
and recovery jobs Always requires an additional license for the physical
tape library
Two Options for Integrating NearStore VTL with Existing Tape Libraries
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.13
18-Sep06
NetBackup support for NearStore VTLDirect Tape Creation
“ Symantec supports the methodology for the creation of physical tape media, readable by NetBackup, whose barcode is synchronized with the virtual media on the NearStore VTL (Direct Tape Creation), as well as direct access to physical media behind the VTL system (pass through mode). This entire process retains full traceability of the media through the NetBackup catalog.”
- Source: Veritas NetBackup Enterprise Server and Server 6.0 Hardware Compatibility Lists, July 2007
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.14
18-Sep06
Direct Tape Creation Restore Options
Data is accessed within seconds and restored 4x to 10x faster than tape
Eliminates mechanical delays found in tape drives and libraries
RAID reliability ensures restores always work
Disk speed restoresData Center
UNIX Servers
Windows Servers
HeterogeneousStorage
Backup Server
Import/Export to Tape
Fast, flexible restores
Fast pass-through restores data before copying tape contents to disk
Tapes are always written in the native backup application format
Data can be restored directly from tape without using the VTL
NearStoreVTL
Restore from disk
Direct from tape
Pass-through from tape
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.15
18-Sep06
NearStore VTL advantages
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement
Investment Protection– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.16
18-Sep06
NearStore VTL Direct Tape CreationUsing Shadow Tapes for fast restores
1 The backup application writes data to virtual tape ABC100. The backup catalog records the barcode and associates it with the user-defined retention policy for the physical tape
How Shadow Tapes WorkData Center
NearStore VTL
Backup Application Server
Physical Tape Library
Virtual tape ABC100 is cloned to a corresponding tape in the physical library using the identical barcode
2
When virtual tape ABC100 is ejected from the virtual library, a hidden copy is stored in the Shadow Tape pool and retained on disk
3
Physical tape ABC100 is removed from the physical library and sent to the Offsite Vault
44
Shadow TapePool3
Tape ABC100 is safely stored offsite and a Shadow Tape copy remains on VTL disk for fast restores
5
Offsite Vault
catalog
ABC100
12
5
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.17
18-Sep06
Symantec support for Shadow Tapes
“The new Shadow Tape feature extends the value of our customers’ investments in NetBackup software by automating the rapid retrieval of backup data from disk.”
“ NetBackup releases 6.0 and higher integrate with NearStore VTL Shadow Tape to facilitate automatic restores of data that exists on Shadow Tape copies.” - Source: Veritas NetBackup Enterprise Server and Server 6.0 Hardware Compatibility Lists, August 2007
- Source: Matt Kixmoeller, Symantec senior director of product management for NetBackup, July 2006
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.18
18-Sep06
NearStore VTL advantages
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement
Investment Protection– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.19
18-Sep06
Virtual Tape Smart SizingOther VTLs don’t account for tape compression
Other VTLs do not predict how data will compress when it reaches the physical tape drive
340GB Data
2 x 200GB physical tapes,each w/100GBof compressed
data
50% Utilized
Other VTLs Tape Library
Tape drivecompression
(1.7x industry average)2 x 200GBfixed capacity virtual tapes
Virtual Tape sizing choices are: Use uncompressed native size only -> poor utilization Guess at compression ratio -> wrong guess Use disk compression as guideline for tape compression -> not reliable
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.20
18-Sep06
NearStore VTL samples backup data and adjusts each virtual tape to fit – without impacting performance
NearStore VTL
Virtual Tape Smart SizingFast and efficient direct tape creation
1x 340GB
340GB Data
1x 200GBCompressed
Smart SizedVirtual Tape
Automatically Resizes
200GBPhysical Tape
Optimized Tape
Utilization
Tape Library
Tape drivecompression
(1.7x industry average)
Mimics physical tape drive compression -> optimized utilization
Different algorithms for different tape technologies -> no guessing Tape and disk compression are independent -> no guessing
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.21
18-Sep06
Why Virtual Tape Smart Sizing mattersEnables efficient VTL tape creation
BeforeInstalling VTL
NearStore VTLDirect Tape Creation
Other VTLDirect Tape Creation
On average, the other VTLs will require twice as many tapes as NearStore VTL when using direct tape creation
More Tapes/
More $$
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.22
18-Sep06
NearStore VTL advantages
Hardware Accelerated Compression– Reduces storage costs by 50 - 67% without sacrificing performance
Self-Tuning– Automatically optimizes performance; no manual tuning is required
Direct Tape Creation– Fast and efficient out-of-band physical tape creation– Shadow Tapes for fast offsite tape creation and disk speed restores– Tape Smart Sizing for 50% savings in physical tape vs. other VTLs
NetApp Total VTL Technology Ownership– Design simplicity, better long term support and product
enhancement
Investment Protection– Common hardware architecture provides flexibility
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.23
18-Sep06
3rd Party VTL Software & GUI
Linux OS
3rd Party Server
Array Mgmt SW
Disk Array OS
Array Controller
SATA disk shelves
NetApp VTL technology ownershipSimplicity, long-term support and enhancements
Other VTLs NearStore VTL
Standard Web Browser
NetApp VTL OS
NetApp VTL Controller
NetApp SATAdisk shelves
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.24
18-Sep06
Investment protectionCommon hardware architecture provides flexibility
NetApp FAS SystemNetApp NearStore VTL
Virtual Tape Personality
• VTL OS• Journaled Object Store (JOS™)• Fibre Channel connectivity
Disk Personality
• Data ONTAP• WAFL• Fibre Channel, iSCSI or NAS
connectivity
On-site System Conversion
VTL Deduplication Technology
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.26
18-Sep06
VTL De-duplication Benefits
Longer backup retention on disk
Potential for dramatic reductions
in media costs for D2D backup– Each 1GB of disk stores > 20x of
backup data
Reduces data center footprint
Reduces power requirements
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.27
18-Sep06
De-duplication – hype or reality ?
Dedupe (compression) ratio is the amount of storage consumed after deduplication, divided by the amount of storage that would have been consumed if no deduplication had been applied, expressed in an N-to-1 fashion– E.g. if 100TB de-dupes to 50TB, compression ratio is
2-to-1
Expressed generically, if X bytes of data dedupes to Y bytes of data:– Compression ratio is (X/Y)-to-1
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.28
18-Sep06
System-wide vs. Image-wide ratios5% data change between full backup images…
Time
95% Identical
5% Different
System-wide ratio = 2/(1+.05) = 1.9-to-1 Image-wide ratio = 1/0.05 = 20-to-1
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.29
18-Sep06
System-wide vs. Image-wide ratios5% data change between full backup images…
Time
95% Identical
5% Different
System-wide ratio = 3/(1+.05+.05) = 2.7-to-1 Image-wide ratio = 1/0.05 = 20-to-1
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.30
18-Sep06
Computing dedupe/compression ratios…
Compression ratios should be expressed in context– System-wide– Virtual Library-wide– Volume-wide (Virtual Tape-wide)– Image-wide
System-wide and Library-wide ratios build gradually over time
Volume-wide and Image-wide ratios can be significant immediately
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.31
18-Sep06
NearStore VTL compression roadmapHigh performance dedupe and hardware compression
Dedupe and hardware compression can be used together to maximize space savings and performance– High-speed deduplication is done first– Unique data is then compressed before it is stored on disk
Standard compression multiplies the effect of deduplicationExample:– Backup data dedupes at 12:1 over time– Unique data then compresses at 2:1– Total reduction in data size equal 24:1
Future VTL datadedupe option
High performance hardware compression
Confidential. Restricted to NetApp employees and Channel Partners under NDA. © Copyright 2006 Network Appliance Inc. All rights reserved.32
18-Sep06
Number of full backups 1 2 3 … 30
Cumulative data backed-up 20 TB 40 TB 60 TB 600 TB
Total data stored on disk 10 TB 10.5 TB 11.0 TB 24.5 TB
Ratio after dedupe and compression
2 to 1 3.8 to 1 5.4 to 1 24 to 1
Example: Dedupe space savings of 24:1Thirty full backups of 20 TB with 5% data change
Unique data stored on disk … 10 TB + 0.5 TB + 0.5 TB . . . + 0.5 TB
Data backed-up …………… 20 TB + 20 TB + 20 TB . . . + 20 TB
Questions?
Email [email protected]
© 2007Network Appliance, Inc. All rights reserved. NetApp and NearStore are registered trademarks of Network Appliance Inc. and Decru DataFort is a trademark of Decru Inc., a Network Appliance company . Unix is a registered trademark of the Open Group. All other trademarks belong to their respective owners and should be treated as such.
VTL Video Demonstration