Tip of the Day!

If you attempt to get the serial number of a device and found "N/A", which means the device is missing/malfunctioning. This also happens when the device is in locked status by BSM/RSM/CSM/UMA/LTT.

C:\>devbra -dev

Tape    HP:Ultrium 1-SCSI  Path: "Tape0:0:0:0"  SN: "N/A"
            Description: CLAIMED:HP LTO drive
            Revision: E38W  Device type: lto [13]  Flags: 0x0011

To confirm the reason, run the below command to identify:

>>omnimm -show_locked_devs | grep <lock name>

If there's a lock, wait for the device to become free. Or you can forcibly free the device by executing the below:

>>omnidbutil -free_locked_devs <lock_name> //this would abort if any session utilizing the device

Once the device is free, run the 'devbra -dev' command and you will get the serial number. If not reboot the media server or the library depends on the error messages. If it still continues to be, replace the drive.