Forum Discussion
Ted_Soward
19 years agoLevel 3
The tape cleaning car came in, I cleaned the drive but this did not solve problem.
I then installed the 9.1 upgrade and drivers.
Attempting to restore from the Tuesday (ideal) tape failed with the same error, however I was able to restore from the tape for the previous day. Only these 2 tapes had the needed files.
Although I got the files back, this experience reveals some serious flaws:
1. Even if a part of the tape were damaged (which seems unlikely, this and all other tapes were re-tensioned and erased immediately prior to use) some of the files should be retrievable from that tape.
2. Why would the Monday tape have exactly the same restore error as the Tuesday tape on ver 9, and now on 9.1 one tape is readable and the other not? This obscure error number seems to be some kind of catch-all. How did the software correct it on one tape and not the other?
3. There should be no restore error if verify worked (barring physical damage to the tape or drive). The verify of both tapes had run successfully. I can see the files on the log. Given that Verify seems not to be a reliable indicator of restorability, how do I know if any of my backups are useable. I have a large number of backups, are any of them good? What should we do differently to be able to have confidence that the backup's contents are all restorable?
Thanks for the help, and getting back the files is a major success, but my confidence in this product is currently about nil.
I then installed the 9.1 upgrade and drivers.
Attempting to restore from the Tuesday (ideal) tape failed with the same error, however I was able to restore from the tape for the previous day. Only these 2 tapes had the needed files.
Although I got the files back, this experience reveals some serious flaws:
1. Even if a part of the tape were damaged (which seems unlikely, this and all other tapes were re-tensioned and erased immediately prior to use) some of the files should be retrievable from that tape.
2. Why would the Monday tape have exactly the same restore error as the Tuesday tape on ver 9, and now on 9.1 one tape is readable and the other not? This obscure error number seems to be some kind of catch-all. How did the software correct it on one tape and not the other?
3. There should be no restore error if verify worked (barring physical damage to the tape or drive). The verify of both tapes had run successfully. I can see the files on the log. Given that Verify seems not to be a reliable indicator of restorability, how do I know if any of my backups are useable. I have a large number of backups, are any of them good? What should we do differently to be able to have confidence that the backup's contents are all restorable?
Thanks for the help, and getting back the files is a major success, but my confidence in this product is currently about nil.
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