This tidbit of information may be known to many of you, especially if you work with NetApp storage, but I’m posting it anyway as a reminder to myself.

After configuring a couple Windows 2008 servers as a failover cluster using a file share witness quorum, I enabled iSCSI and installed SnapDrive on NodeA. An iSCSI connection to the NetApp storage was established, but when attempting to use SnapDrive to add new disks, I received the message: “SnapDrive error: Class not registered“.

To correct, SnapDrive had to be installed on NodeB of the cluster. Once installed on both servers, I could use SnapDrive to add disks with no problems.