HP D2D D2D NAS Integration with CommVault (EH985-90934, March 2011) - Page 43

Recover production data from D2D-B via Media Agent server at Site B

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Figure 3 Data Center to Data Center recovery To facilitate a full end to end recovery, two CIFS share will be created on the D2D Backup System: • BackupShare - To be used as the mount point for the replica disk library • CommcellDR - To be used for the Commcell DR backup During normal operation, the Media Agent at Site A writes backup data to the replica disk library D2D-A, which is subsequently replicated to D2D-B via LBR. Regular Comcell DR backups are scheduled on the Commserve and are written to the second share on D2D-A (CommcellDR) with LBR replicating a copy to D2D-B. This configuration enables recovery from both a failure of D2D-A at Site A and also in the event of a total disaster of Site A. Should D2D-A fail, then data can be recovered from D2D-B via the Media Agent at Site B. In this case, when recovering the data via a restore operation; the Media Agent at Site B would be selected as the source path and the data read from D2D-B and restored to Site A via the WAN connection. This situation is similar to the previous scenario, i.e. ROBO configuration. In the event of a total disaster at Site A where we lose the CommCell and/or the D2D-A, proceed as follows to recover Site A data at Site B: • Recover CommServe at Site B • Recover production data from D2D-B via Media Agent server at Site B End to end recovery - data center to data center 43

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Figure 3 Data Center to Data Center recovery
To facilitate a full end to end recovery, two CIFS share will be created on the D2D Backup System:
•
BackupShare – To be used as the mount point for the replica disk library
•
CommcellDR – To be used for the Commcell DR backup
During normal operation, the Media Agent at Site A writes backup data to the replica disk library
D2D-A, which is subsequently replicated to D2D-B via LBR. Regular Comcell DR backups are
scheduled on the Commserve and are written to the second share on D2D-A (CommcellDR) with
LBR replicating a copy to D2D-B.
This configuration enables recovery from both a failure of D2D-A at Site A and also in the event
of a total disaster of Site A.
Should D2D-A fail, then data can be recovered from D2D-B via the Media Agent at Site B. In this
case, when recovering the data via a restore operation; the Media Agent at Site B would be
selected as the source path and the data read from D2D-B and restored to Site A via the WAN
connection. This situation is similar to the previous scenario, i.e. ROBO configuration.
In the event of a total disaster at Site A where we lose the CommCell and/or the D2D-A, proceed
as follows to recover Site A data at Site B:
•
Recover CommServe at Site B
•
Recover production data from D2D-B via Media Agent server at Site B
End to end recovery – data center to data center
43