Remote Blob Store (RBS) and Always On Availability Groups (SQL Server)
Always On availability groups can provide a high-availability and disaster recovery solution for SQL ServerRemote Blob Store (RBS) BLOB objects (blobs). Always On availability groups protects any RBS metadata and schemas stored in an availability database by replicating them to the secondary replicas. This is the SharePoint Content Database. Generally speaking, SQL Server stores this RBS metadata independently from the blob.
The protection for RBS BLOB data depends on the BLOB Store Location, as follows:
|BLOB Store Location||Can Availability Groups Protect This BLOB Data?|
|The same database that contains the RBS metadata (stored using a RBS remote FILESTREAM provider)||Yes|
|Another database in the same instance of SQL Server (stored using a RBS remote FILESTREAM provider)||Yes
We recommend that you put this database in the same availability group as the database that contains the RBS metadata.
|Another database in a different instance of SQL Server (stored using a RBS remote FILESTREAM provider)||Yes
This database must be in a separate availability group.
|A third-party BLOB store||No
To protect this BLOB data, use the high-availability mechanisms of the BLOB store provider.
- RBS maintainers need to be targeted on the primary replica.
- Use an availability group listener. For more information, see Availability Group Listeners, Client Connectivity, and Application Failover (SQL Server).
Maintaining Remote BLOB Store (in SQL Server 2008 R2 Books Online)
Running RBS Maintainer (blog)