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тАО02-08-2004 03:04 AM
тАО02-08-2004 03:04 AM
C1537A Drive Errors
My problem is w/ a W2000 Server w/ HP C1537A SCSI tape drive that is having persistent failures to backup data.
I suspect the drive is bad and need to find a replacement. Can anyone point me to some pertinent specs that will help when shopping for a replacement? The original paperwork that came with the device is not available.
There are 2 errors we are encountering:
"Mount Failed. The server threw an exception."
or
"Device reported an error on a request to write data to media"
These 2 errors are associated with a conflict between the W2000 driver for this device and W2000 RSM. We have carried out the fix for this problem, and the problem remains the same.
All Help appreciated.
Thanks,
Bill
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тАО02-08-2004 04:18 AM
тАО02-08-2004 04:18 AM
Re: C1537A Drive Errors
It seems as your drive is a DDS3 drive. DDS3 drives is still avialable.
http://h18006.www1.hp.com/products/storageworks/dat24/specifications.html
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тАО02-08-2004 05:58 PM
тАО02-08-2004 05:58 PM
Re: C1537A Drive Errors
> My problem is w/ a W2000 Server w/ HP C1537A SCSI tape drive that is having persistent failures to backup data.
> I suspect the drive is bad and need to find a replacement.
I wouldn't give up on the drive just yet.
Can you install HP library & tape tools (www.hp.com/support/tapetools)?
If so, run the tool and generate a support ticket. View the ticket and look at the "device analysis" section. It may provide some suggestions on how to eliminate your backup failures.
For example, after extensive use the heads can contour to the media. There is a recalibration test that may be recommended which will optimize the write current for the current head profile.
If you want, post the support ticket (.ltt file), and we can review it.
If you do need to replace the drive, I'd suggest looking at a DDS4 or DDS5 drive for the increased capacity and performance.
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тАО02-08-2004 11:52 PM
тАО02-08-2004 11:52 PM
Re: C1537A Drive Errors
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тАО02-09-2004 12:54 AM
тАО02-09-2004 12:54 AM
Re: C1537A Drive Errors
Check your services to make sure any 3rd party software is stopped along with the removalable storage service, if those aren't stopped L&TT probably won't be able to detect your drive
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тАО02-09-2004 02:45 AM
тАО02-09-2004 02:45 AM
Re: C1537A Drive Errors
One way around the exclusive access lock is select the ASPI I/O mode on the LTT splash screen (if this was selected as an option on the install)>
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тАО02-09-2004 08:50 AM
тАО02-09-2004 08:50 AM
Re: C1537A Drive Errors
The firmware was updated to from 005 to 111 (I think those are the correct numbers). It took a few minutes for the drive to become available again. I attempted to perform some of the diagnostic tests in L&TT and they all failed. A support ticket was emailed. Then I went back a few minutes later, re-started L&TT, and performed the tests again. This time they all passed.
I don't know if the error is intermittent, or the errors resulted from the device needing some time to get back online.
I'll keep you posted, and thank you so much for the help. I really appreciate it.
Bill
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тАО02-09-2004 08:52 AM
тАО02-09-2004 08:52 AM
Re: C1537A Drive Errors
If you want, zip up the EventLog*.ltt files in the logs folder of LTT, and then send them to ltt_team@hp.com. I'll look to see why the tests failed the first time.
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тАО02-09-2004 09:01 AM
тАО02-09-2004 09:01 AM
Re: C1537A Drive Errors
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тАО02-09-2004 09:11 AM
тАО02-09-2004 09:11 AM
Re: C1537A Drive Errors
The TSR email includes the event logs. They show that the OS was reporting "An unknown win32 error occurred" on all the SCSI commands to the drive.
My guess is this was a side effect of the firwmare update and an iteraction with the windows plug-n-play manager. Windows uses the device ID AND the firmware version string as unique identifiers for a discovered device. If either of these change on an existing device, windows eventually generates an "Unsafe device removal" message, and then rediscovers the device with the new identity. In between these two steps, access to the device can be unpredictable.
So, you should be OK now. If you can post an LTT support ticket (.ltt file), I can review the device logs for anything of interest.