HP D2D D2D NAS Integration with CommVault (EH985-90934, March 2011) - Page 41
End to End Disaster Recovery Process, End to End Recovery – ROBO Scenario
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7 End to End Disaster Recovery Process In this section we will explain the process for recovering from a replica D2D NAS share having made use of the low bandwidth replication feature of HP D2D NAS. We will cover three scenarios: • A ROBO site where the CommCell is still available but the local data is lost (recover data from the Disaster Recovery site) • A Data Center to Data Center scenario where a complete CommCell installation has been lost (total recovery from Disaster Recovery site) • A scenario where the D2D Backup System at the target site is also copied to physical tape for archiving and security End to End Recovery - ROBO Scenario This typical usage model is a large ROBO deployment with the Commserve in a central location. In this scenario, there are two D2D Backup Systems, one located at a ROBO site and one located at the central location. Low Bandwidth Replication is configured between the two D2D Backup Systems to enable data written at the ROBO location (Site A) to be replicated to the Disaster Recovery location (Site B). A CommVault Media Agent server, in this case the Commserve, is configured to utilize both D2D Backup Systems, one as the primary read/write device; the other as a secondary read-only device. Figure 2 End to end recovery, ROBO scenario Recovery steps are as follows. 1. Configure D2D NAS shares on Site A and Site B from the D2D Web Management Interface. 2. Configure replication between the D2D-A & D2D-B NAS shares. End to End Recovery - ROBO Scenario 41