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11-24-2004 08:32 PM
11-24-2004 08:32 PM
HP Ultrium 215E random frequent scsi timout error on ML530G1
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11-26-2004 10:44 AM - last edited on 02-14-2011 01:45 AM by shivu.h.n
11-26-2004 10:44 AM - last edited on 02-14-2011 01:45 AM by shivu.h.n
Re: HP Ultrium 215E random frequent scsi timout error on ML530G1
Hello Ivo,
What you have described is fairly common, in my experience. LTO drives are getting better at "extended error recovery" and a write command can take several minutes. The designers decided that there would be no notification of this and it is very difficult to read the history of the drive.
Now you never see a write error sense and additional sense codes. We have had to cancel all timeouts (make the time infinite) and rely on the drive to either work or die.
I expect it is about the same in the HP world as in IBM's. The problem tends to show up with certain tapes and not others. The drive tries to learn which can make the first corrected error longer than others. I do not know where in the drive one can discover what it has "learned" since HP no longer publishes the details. At the very least you need to track tapes by overall data rates.
Of course it can be the drive.
Ugh. This is not a step forward.
Peter Brewster