Consequently, when compared to backup alone, a reduced amount of data will be backed up AND
replicated by each StoreOnce Backup system within the same timeframe.
The illustration assumes a fully configured product, a compression ratio of 1.5, a data change rate of 1%, a
data retention period of 6 months and a 10hr backup window. Each box in the diagram depicts how much
data can be typically protected by each model of HP StoreOnce Backup systems on a daily basis. It
compares the difference between solely conducting backup with data deduplication, to performing backup
and data deduplication with the addition of a data replication process.
The new HP B6200 StoreOnce Backup system extends this data protection to provide up to 224TBs in an 8
hour window. Please refer to the B6200 if you require higher performance disk backup systems. See
www.hp.com/go/b6200
for more details
Note also, that all forms of data deduplication can have a particular impact on tape offload performance,
as data must be rehydrated before it is stored to tape. The StoreOnce Backup system is designed for daily
t backup, however, tape should still have an important part in cost-effective longer term archival or where
data replication is not used for off-site disaster recovery. Continuing to off-load from the StoreOnce
device to tape on a daily basis may have a negative impact on performance.
For help with choosing the most appropriate StoreOnce Backup systems for your specific environment, we
recommend you talk to your HP partner or sales advisor about using the HP storage Sizing Tool which can
be downloaded from the Downloads section of
www.hp.com/go/ d2dsizer
Making use of the StoreOnce backup system's ability to run multiple backups in parallel can substantially
improve aggregate throughput to a StoreOnce appliance. This and a number of other best practices can
help you to optimize the performance of a StoreOnce Backup system. Please refer to: HP StoreOnce
Backup system, Best Practices for Performance Optimization which can be found at StoreOnce Best
Practices for Performance Optimization.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02511912/c02511912.pdf
For more information on achieving deduplication ratios go to:
www.hp.com/go/deduplication
QuickSpecs
HP StoreOnce Backup systems
Features and Benefits
DA - 13218 Worldwide — Version 18 — September 28, 2012
Page 6
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