Hi,
If the tape itself is readable, all readable data will be restored and
the damage part will be reported (error log) and skipped. Restore will
take somewhat longer because of the retries on the damaged part of the
tape.
Regards,
Karel
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Jeff White
Sent: donderdag 15 mei 2008 12:36
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Damaged Tape During Restore - Theoretical Question
Hi
TSM Server V 5.4.0.0
TSM Client v5.4.0.2
Both running on Windows 2003
I am doing some DR testing and must assume that my onsite tapes are not
available to me and our offsite tapes are the ones we will restore from.
During the restore process, i have found that one of the LTO3 tapes is
damaged and cannot be read. In the event of a real DR, I would not be
able to recreate the volume as i don't have the onsite copy of the
tapes. I am restoring a 500gb Windows drive and i have restored about
300gb when i hit the error.
Should the restore 'skip' the data on the damaged tape and continue, or
should it fail the restore? The restore in question has spent 15 hours
trying to read the tape, but is receiving hundreds of I/O error, error
1104 (no more data on tape). If i made the tape 'unavailable', would it
say 'data unavailable to server' and continue or would it fail?
I have cancelled the restore for now and will recreate the damaged tape
from the live server and start again when that is complete, but the
management here want to know what would happen in the event of a real
disaster recovery being invoked. Would they lose the remaining 200gb yet
to be restored?
Thanks
Jeff
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