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Tape drive disappears

Wieser
Occasional Advisor

Tape drive disappears

ML370 G4 Running Windows 2003 sp2
We have two MSL6030 connected into two u320e cards.
The drive and libraries are detected in the BIOS and within Windows. We are running NetBackup 6.5 a few backups will run then the eventlog will show errors for the express2 driver: The device \Device\Scsi\express21, is not ready for access yet.

And a tape drive will have gone missing from the Device Manager.

Any suggestions?
14 REPLIES
Patrick Terlisten
Honored Contributor

Re: Tape drive disappears

Hello,

is the RSM servie running? If yes, set it to "disabled". Try a firmware and driver update, and check the cabling and the termination. Is it always the same drive, that disappears?

Best regards,
Patrick
Best regards,
Patrick
Wieser
Occasional Advisor

Re: Tape drive disappears

RSM has been disabled and all firmware and drivers are up to date. Is there a utility to test SCSI termination. All green LEDS on the libaries. System starts up fine with all devices visible but then the same drive disappears.

Thanks

Re: Tape drive disappears

Reinstall the Drivers for the Drive. I have seen many issues where this has fixed the Problem.

Also check for the Firmware of the Drive. You can check it with the L&TT tool, from www.hp.com/support/tapetools

I am an HP employee
IBaltay
Honored Contributor

Re: Tape drive disappears

Hi,
maybe also u320 fc/scsi mapping should be checked for the correct host to drive assignments
the pain is one part of the reality
Wieser
Occasional Advisor

Re: Tape drive disappears

Thanks for all the suggestions. All the firmware and drivers are up to date for the tapes, libraries and HBAs. The other day built a new server, ML370 G5, with a brand new u320e. Attached is an MSL6030 with Ultrium2 drives. Again all drivers and firmware are up to date and I'm still getting the same express2 errors. Anyone have any other ideas?
IBaltay
Honored Contributor

Re: Tape drive disappears

Hi,
The lib drives are SCSI. The e320e card is a FC/SCSI router. If you install the new host, its HBA port wwns are not assigned to the library SCSI drives (they are missing from the port 0 map), therefore the host does not see them. You should check the port 0 map and add/assigned the hosts HBA port wwns to the appropriate library drives
the pain is one part of the reality
Wieser
Occasional Advisor

Re: Tape drive disappears

Are you sure the u320e have FC capabilities?
This is the unit I'm using:
http://h18000.www1.hp.com/products/quickspecs/12690_div/12690_div.html
Model No.: AH627A

IBaltay
Honored Contributor

Re: Tape drive disappears

No, I was to quick to see the diference between the u320 and thought you are using the the NSR :-)
the pain is one part of the reality
IBaltay
Honored Contributor

Re: Tape drive disappears

But, if you decide in any time to go to the LANfree, then it applies :-)
the pain is one part of the reality
Wieser
Occasional Advisor

Re: Tape drive disappears

I have noticed that when running the SCSIDomain Validation tool, the card and driver version display correctly but not the devices.

The configuration tool and Windows Device manager detect the devices properly.

Is there any 'trick' to this utility?
Wieser
Occasional Advisor

Re: Tape drive disappears

Scratch that last entry. Downloaded latest version from attotech and seems to work.
I ran across this thread:
http://forums12.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1216766804796+28353475&threadId=1053851
I'll give this a try and see if there is any difference
Wieser
Occasional Advisor

Re: Tape drive disappears

Update: Still getting the errors but on the plus side it didn't throw the backup software (NetBackup) in a tailspin and mark the drives as unavailable.
steveS_2
Advisor

Re: Tape drive disappears

I seem to have the same issue, using a ML350-G5. I have installed 3 x AH627A cards (U320e) into my system and connected up 6 tape drives. The system cannot seem to locate the drives, even if I do a bus rescan. Windows 2003 see the drives but the HBAs seem to have a problem seeing them. Any help on this would be of immense help as I am trying to get 20 other systems working with the same issue.