The NetBackup implementation of SCSI persistent reserve and SPC-2 reserve has the following limitations:

• SCSI persistent reserve and SPC-2 reserve do not apply to NDMP drives.

  The NDMP filer is responsible for providing exclusive device access.

• With SPC-2 SCSI reserve, devices may remain reserved after a failover in cluster environments or multi-path environments with failover capability.

  You cannot use SPC-2 SCSI reserve if the following factors are true: The failover does not break the device reservations and those devices that were in use during the failover must be available without manual intervention. Use SCSI persistent reserve.

• If the drive path changes, the backup jobs and the restore jobs fail.

  Therefore, jobs fail in cluster environments or any multi-path environments that share paths dynamically. If you cannot disable dynamic path sharing, you cannot use SPC-2 SCSI reserve or SCSI persistent reserve in NetBackup.