HP StoreOnce 4430 HP StoreOnce Backup System Concepts and Configuration Guidel - Page 60

Catalyst Copy, In Symantec products HP has developed an OpenStorage OST Plug-in to NetBackup

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The deduplication offload into the media server is implemented in different ways in different backup applications. • With HP Data Protector the StoreOnce deduplication engine is embedded in the HP Data Protector Media Agent that talks to the Catalyst API. • In Symantec products HP has developed an OpenStorage (OST) Plug-in to NetBackup and Backup Exec that creates the interface between Symantec products and the StoreOnce Catalyst store API. Catalyst stores can also be copied using low bandwidth links - just like NAS and VTL devices. The key difference here is that there is no need to set up replication mappings (required with VTL and NAS); the whole of the Catalyst copy process is controlled by the backup software itself. This is implemented by sending "Catalyst Copy" commands to the Catalyst API that exists on the source StoreOnce appliance. This simple fact, that the backup application controls the copy process and is aware of all the copies of the data held in Catalyst stores, solves many of the problems involved in Disaster Recovery scenarios involving replicated copies. No import is necessary because all entries for all copies of data already exist in the backup application's Database. Catalyst Copy Catalyst Copy should not be considered in the same way as VTL and NAS replication, since there is effectively no hard constraints other than capacity on how many Catalyst stores can be copied (replicated) into a Catalyst store at a central site. Furthermore, because Catalyst copies are controlled by the backup application, multi-hop replication is possible using Catalyst devices. However, Catalyst blackout windows can be set on the StoreOnce appliance to dictate when the copy job actually happens and bandwidth throttling can also be enforced to limit the amount of WAN link consumed by StoreOnce Catalyst copy; in this respect it is similar to NAS and VTL replication. Catalyst Copy has the following features: • The Copy job is configurable from within the backup application software. • Several source Catalyst stores can be copied into a single target Catalyst store. • Multi-hop copy is configurable via the backup software - Source to Target 1 then onto Target 2. • One to many copy is also configurable but happens serially one after the other. • With the Catalyst Agents running on remote office media servers HP StoreOnce Catalyst technology has the ability to back up directly from remote sites to a central site, using what is known as low bandwidth backup - essentially this uses HP StoreOnce replication technology. 60 StoreOnce Catalyst stores

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The deduplication offload into the media server is implemented in different ways in different backup
applications.
•
With HP Data Protector the StoreOnce deduplication engine is embedded in the HP Data
Protector Media Agent that talks to the Catalyst API.
•
In Symantec products HP has developed an OpenStorage (OST) Plug-in to NetBackup and
Backup Exec that creates the interface between Symantec products and the StoreOnce Catalyst
store API.
Catalyst stores can also be copied using low bandwidth links – just like NAS and VTL devices. The
key difference here is that there is no need to set up replication mappings (required with VTL and
NAS); the whole of the Catalyst copy process is controlled by the backup software itself. This is
implemented by sending “Catalyst Copy” commands to the Catalyst API that exists on the source
StoreOnce appliance. This simple fact, that the backup application controls the copy process and
is aware of all the copies of the data held in Catalyst stores, solves many of the problems involved
in Disaster Recovery scenarios involving replicated copies. No import is necessary because all
entries for all copies of data already exist in the backup application’s Database.
Catalyst Copy
Catalyst Copy should not be considered in the same way as VTL and NAS replication, since there
is effectively no hard constraints other than capacity on how many Catalyst stores can be copied
(replicated) into a Catalyst store at a central site. Furthermore, because Catalyst copies are controlled
by the backup application, multi-hop replication is possible using Catalyst devices. However,
Catalyst blackout windows can be set on the StoreOnce appliance to dictate when the copy job
actually happens and bandwidth throttling can also be enforced to limit the amount of WAN link
consumed by StoreOnce Catalyst copy; in this respect it is similar to NAS and VTL replication.
Catalyst Copy has the following features:
•
The Copy job is configurable from within the backup application software.
•
Several source Catalyst stores can be copied into a single target Catalyst store.
•
Multi-hop copy is configurable via the backup software – Source to Target 1 then onto Target
2.
•
One to many copy is also configurable but happens serially one after the other.
•
With the Catalyst Agents running on remote office media servers HP StoreOnce Catalyst
technology has the ability to back up directly from remote sites to a central site, using what
is known as low bandwidth backup – essentially this uses HP StoreOnce replication technology.
60
StoreOnce Catalyst stores