Hello,
Since Arno has already answered this, I will try not to duplicate his answers.
Bacula may have the same problem, not in the sense that it cannot read across
volumes, but if it gets a read error, it retries 5 or 10 time (I forget
exactly how many) then gives up. What I have always planned, but never
implemented is a mode that says when a hard read error is encountered, read
many times (as it currently does), and if the block cannot be read, skip to
the next block, and try again. If that fails, skip to the next file and try
again, ... This is possible in Bacula, because the tape format is designed
so that Bacula can begin reading at any block or any file -- of course, some
data may be lost, but the point is that it knows how to "re-synchronize"
anywhere on the tape.
In November, this might be a nice item to put on the wish list for the next
version.
On Thursday 06 October 2005 22:30, Drew Tomlinson wrote:
> I suspect the answer to my questions is "no" but wanted to ask before I
> give up on a batch of tapes created by BackupExec 8.x. Apparently,
> BackupExec is so "stupid" that if it encounters an error on any tape of
> a multiple tape volume set, it can't restore anything past the error.
> For example I had used BackupExec to backup about 40 GB of data to 2 GB
> DDS tapes. When I attempted to restore after a drive failure, BE
> encountered an error on tape 5 and refused to continue. I called their
> help(less) desk and was told that that's just the way it is and
> hopefully I learned my lesson to not create backup jobs that span
> multiple volumes in the future. This is when I switched to Bacula for
> future backups.
>
> So anyway, Bacula has been running great and meeting my needs (a big
> THANK YOU to all the contributors!). But before I throw out that old
> box of tapes I was just wondering if Bacula could help me recover any
> data from them.
No.
>
> Thanks,
>
> Drew
--
Best regards,
Kern
(">
/\
V_V
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