NetBackup provides a multiplexing feature that lets you interleave multiple backups to the same tape. Multiplexing is useful if you have many simultaneous backups using the same tape drive. However, it can interfere with SQL Server recovery due to how SQL Server requests streams during restore.
If you use multiplexing when you perform multistreamed backups, see the information on how to perform restores.
To configure multiplexed backups
In the schedule for your "Application Backup" policy, set Media multiplexing to the number of backup stripes that you plan to use.
In the storage units that are associated with this schedule, select Enable Multiplexing.
Set Maximum streams per drive to the number of stripes that you plan to use.
In the Backup Microsoft SQL Server Objects dialog box, select a Stripes setting equal to the number of stripes that you want to use.