Managing Data Retention And Reducing Backup Storage Costs - HP 12000 Design Manual

Other information: HP strongly recommends using the backup application to perform the copy
from VLS to physical tape. Single management console for all activities and better utilization of
physical media through object copy technology.

Managing Data Retention and Reducing Backup Storage Costs

Company requirements: To improve RPO objectives, reduce expenditure on ever increasing backup
storage, better manage data growth for backup, provide more data online, reduced dependency
on tape.
Solution: VLS9000 with deduplication (licensable feature).
Caveats: Needs specific data type support with ISV software. Best practices include using small
cartridges (fewer than 300 GB). Some scripting changes will be required for stream naming
conventions with RMAN Oracle backups. Can take several days for space to be fully reclaimed.
ISVs: Data Protector, Netbackup, TSM – with Unix files, Windows files, SQL, Exchange, Oracle
and NDMP. See http://www.hp.com/go/ebs.
Device configuration highlights: Size using the HP Backup Sizer; the smaller the virtual media the
faster deduplication and space reclamation will happen.
Backup application configuration highlights: The only change required is that RMAN scripts need
to be changed to ensure consistent stream naming. Needs strict control over backup policy naming.
Figure 27 Using VLS to Manage Data Retention and Reduce Backup Storage Costs
Recovery options: All recovery from VLS with deduplication is fast, especially the last full backup
(typically 90% of restores are from the last backup). Copies from the VLS to physical tape is done
by expanding deduplicated data so full content is copied to physical tape. Therefore, data can
be directly recovered from physical tape.
Solution advantages:
Deduplication is done post process so it does not slow down the backup.
Deduplication can be enabled/disabled by data type or policy name.
Fast restores of deduplicated data.
Scalable up to 320 TB currently.
Solution trade-offs: Deduplication has to be certified with backup applications and data types.
VLS Blueprints 67