Hi All,
I have a PowerVault TL4000 library unit running Windows 2003 x64. Back in August I started getting random drops from our second drive while Netbackup was running. In device manager the second drive would not show up. The way I got the drive back and running is by downing the port on our Qlogic HBA fiber card and then bringing it back up. It also works if you make a change to the drive parameters from the tape library. In the event manager I see the following before the drive drops.
The device 'IBM ULT3580-HH5 SCSI Sequential Device' (SCSI\Sequential&Ven_IBM&Prod_ULT3580-HH5&Rev_D2AD\5&346ea004&0&000000) disappeared from the system without first being prepared for removal.
This issue mostly happens with the second drive. If it happens with the primary drive, the second drive is also down.
I ran the Qlogic utility Sansurfer and it indicates that the ports and the card are good. I also ran a loopback test and everything is good with that as well. When the drive drops it shows in Sansurfer as disconnected as well.
Dell support also had me lose an entire week ordering new fiber cables which did not help at all. I even mentioned what were the chances that two cables would be bad and they said someone could have yanked on them.
Back in August when the issue happened I got this error in the library. HE: internal SCSI cmd failed with check condition
Support has ran the IBM utility test and reviewed the drive dumps with no explanation as to why the drives are being dropped. So I have a library that is not functioning correctly and support not willing to help any further. Even if I buy a new Qlogic card and still have the problem I am at a loss because this person will continue to say there is nothing wrong with the library. This tech is finding every reason to blame something else besides the library. Can anyone suggest anything to help localize the issue?