How to perform extensible storage Disaster Recovery


In the event of hardware failure or corruption of File Systems in a DS-System with Extensible Storage, you must replace the storage location(s) with new file system(s). You must restore data for that storage location from your latest backup from other media (e.g. Tape).

Note: In the event that data has been lost, the subsequent Extensible Storage Disaster Recovery process is designed to correct the databases for the affected DS-System(s) and DS-Clients.

Before the DS-System is able to provide normal service, the DS-System must run its Extensible Storage Disaster Recovery process:

1. Setup Menu > Advanced Configurations. Set the DisasterRecoveryMode parameter to 1. Next time DS-System starts, it will run in disaster recovery mode.

2. Replace the corrupted File System with a new File System (use the same mount point). Then, recover the data for that location from your DS-System backup.

3. Start DS-System service. When DS-System starts, it will automatically perform the Extensible Storage Disaster Recovery process for all backup sets

4. After DS-System finishes the Extensible Storage Disaster Recovery process for one backup set, it will force DS-Client to perform a "DS-System based synchronization" the next time that DS-Client starts an activity on this backup set.

5. After DS-Client has completed the "DS-System based synchronization process", the backup set will be marked as normal.



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