HP D2D D2D NAS Integration with CommVault (EH985-90934, March 2011) - Page 44

Recover CommServe at Site B, Recover site production data

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Recover CommServe at Site B 1. Recover the Commserve to the standby server at Site B. Using the CommcellDR backup from the replica copy on D2D-B and the CommServe disaster recovery tools, read the DR backup from the CommcellDR backup share on D2D-B, and recover the CommServe to the standby server. 2. Once the CommServe has been recovered access to replicated copies of the backup data can be achieved via the Media Agent server at Site B. If it is not possible to retrieve the Commcell DR backup from the share, due to some form of corruption; use the CommVault Resource Kit utility 'Media Explorer' to read the DR backup from the D2D-B share. Once the Commcell DR backup files have been recovered, the CommServe can be rebuilt. Recover site production data Having recovered the Commserve at Site B, recovery operations can now take place from D2D-B. From a CommVault Simpana perspective, the replica disk library continues to be accessible via the secondary path through the Media Agent at Site B. This enables recovery operations to be performed for production data. When restore operations are requested, instead of selecting the Site A Media Agent, which is no longer available; the Administrator can select Media Agent at Site B for the recovery and recover data from D2D-B. The first time a recovery is undertaken, the index information for the backup set must be retrieved from the backup in order to select which files to recover. This index is recovered to the local index cache on the Media Agent at Site B, and is therefore available immediately for subsequent restores. Data center to data center with physical tape offload at DR site The typical usage model here is for D2D-A to D2D-B to Tape with archive tape copies being maintained at the DR site. 44 End to End Disaster Recovery Process

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Recover CommServe at Site B
1.
Recover the Commserve to the standby server at Site B.
Using the CommcellDR backup from the replica copy on D2D-B and the CommServe disaster
recovery tools, read the DR backup from the CommcellDR backup share on D2D-B, and recover
the CommServe to the standby server.
2.
Once the CommServe has been recovered access to replicated copies of the backup data
can be achieved via the Media Agent server at Site B.
If it is not possible to retrieve the Commcell DR backup from the share, due to some form of
corruption; use the CommVault Resource Kit utility ‘Media Explorer’ to read the DR backup
from the D2D-B share. Once the Commcell DR backup files have been recovered, the
CommServe can be rebuilt.
Recover site production data
Having recovered the Commserve at Site B, recovery operations can now take place from D2D-B.
From a CommVault Simpana perspective, the replica disk library continues to be accessible via
the secondary path through the Media Agent at Site B. This enables recovery operations to be
performed for production data.
When restore operations are requested, instead of selecting the Site A Media Agent, which is no
longer available; the Administrator can select Media Agent at Site B for the recovery and recover
data from D2D-B. The first time a recovery is undertaken, the index information for the backup set
must be retrieved from the backup in order to select which files to recover. This index is recovered
to the local index cache on the Media Agent at Site B, and is therefore available immediately for
subsequent restores.
Data center to data center with physical tape offload at DR site
The typical usage model here is for D2D-A to D2D-B to Tape with archive tape copies being
maintained at the DR site.
44
End to End Disaster Recovery Process