Requirements for clustering Backup Exec in a Microsoft Cluster Server

The following scenarios must be followed if you plan to cluster Backup Exec:

Symantec highly recommends that you use the default database instance (MSDE) that Backup Exec installs if you plan to cluster Backup Exec.
Symantec also supports using a remote SQL Server instance to host the Backup Exec database. However, if you plan to use this scenario, review the following:

Only one installed instance of Backup Exec can be installed into the remote SQL Server instance on a clustered node. All other installed instances of Backup Exec in the cluster must use the default Backup Exec MSDE database instance.

Note:

You must run the Backup Exec cluster wizard on the cluster node that uses the remote SQL Server instance.