I'm using Enterprise Vault 7.0 SP1 and attempting to use FSA in a cluster environment. It seems like the Enterprise Vault placeholder services gets installed on both nodes of the cluster and reboot both nodes several times. On Node 1 everything seems and acts as it should. Node2 waits until the group is failed over. Once you fail over the group, the resource for FSA failed to start witht he event id 20484 Enterprise Vault File system Filter driver not installed. The driver is present with the same version of the file as it is on Node1. You can fail the group back to node 1 and no problems. I have a case open with Symantec and I since send a Dtrace log from both nodes during the failover of the group.
if anyone has seen this please post a reply
cheers
Glenn