Edward, This sounds to me like the drive is bad. Have you cleaned it? Done any of the manufacturer diagnostics on it?
On Fri, Mar 4, 2011 at 10:47 PM, Edward Ned Harvey <[email protected]>wrote: > I have an LTO3 tape autoloader. It's been in production for about 3-4 > years, but it's never been reliable. For the last 9 months or so, it's been > so unreliable I've barely used it at all, but now I'm working hard to bring > it back to life. > > > > Right now, I have a very repeatable behavior: I can write all the data I > want to all the tapes I want, as long as I only write zero's. But when I > write any real data (containing a mixture of 1's in it) then I can only > write a small amount of data (1M or 100M or so) it varies... And it exits > with IO error. > > > > Tapes have been in rotation. Meaning we don't just write once and archive > permanently. We write them, take them offsite, and some time later they > will eventually rotate back in to be written again. I don't know how many > times each tape has been written ... I would guess 5 times each roughly. > > > > I wonder, maybe the failure mode for LTO3 tapes is that they start becoming > unwritable when they're old? Or unwritable when they've been written more > than X times? > > > > Any ideas? I tried googling, but didn't find anything relevant. > > > > Thanks... > > _______________________________________________ > bblisa mailing list > [email protected] > http://www.bblisa.org/mailman/listinfo/bblisa >
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