
See Resetting the SAN in the SAN Shared Storage Option. Recycling the SAN may also resolve fibre problems. If restarting the operating system does not bring the devices online, reset the SAN to help identify problem tape devices. Be sure that no Backup Exec jobs are running when you restart. If restarting the services does not bring the devices online, restart the operating system. If no errors exist on the library or if you corrected the errors and the devices are still offline, stop Backup Exec services and then restart them when all Backup Exec jobs are inactive in the SAN. If initializing the library does not bring the devices online, check the library for an error display on the front panel, mechanical problems, or tapes inappropriately in the drives. IMO, So pathetic that SYMANTEC have not added this option in its Backup Exec GUI, because playing with the windows registry can be very dangerous for normal. Select the library, and then under Device Tasks, click Initialize.

To initialize the library, do the following in the order listed:
