Tape library locked by host ( DPM )

Hi ALL,

I’ve encountered a strange issue about DPM

The magazine of my tape library can’t be opened after finishing the backup job, and a error log will be shown “locked by the host”

I’ve tried to stop DPM service and confirmed the status of “library door” is unlocked in DPM,  but seem useless

Then the only method seem works is restarting the server, but the same error would happen next time. I just guess there are some process blocked but failed to confirm.

Any advice or solution would be appreciated ! ~lol

P.S. I use DPM 2007 SP1 v2.0.8864.0 & Dell tape library  PowerVault TL2000