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veritas Netbackup Issue

Posted on 2006-10-30
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Last Modified: 2013-12-01
1 why My backup task in netbackup can hang up and I was unable to cancel the Job. so... I need to restart the services?

2.while doing tranfer to tape. Is my media server or client server cannot be down?

3. what will happened If the connection broken between master server, media or client server .. while they is backup data from media or master server?

4. why the media or client server down while my netbackup is running can cause the tape drive down?


Regards
TGT
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Question by:pgsystech
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Disorganise earned 250 total points
ID: 17856250
1 - because NBU is badly coded, particular version 6.  v6 with MP3 is better but you still need engineering binaries to get it worling anywhere reliably.  MP4 is due soon and should make it fit for market
2 - either.  if client goes down, it can't send data.  however, when it comes back up, it should resume: either from the start, or from the last checkpoint (if enabled).  If media server goes down, no dat can be written to tape.  when media server comes back up , it should re-schedule back-ups from the start.  note that the tape(s) being written to when the server went down will probably have write errors on them and thus become frozen
3 - as per 2, with the caveat that if the master goes down, no meta data can be written to the catalog and no new jobs can schedule.  an etended outage will likely fail backups but I haven't tested this scenario
4 - a clinet down won't affect tape drives.  a media server 'controls' the tape drives so if the server is down the drives are inaccessible.  as per 2, the tape being written to at the time is likely to go bad, and since it's 'stuck' in the drive, there's a  good chance of NBU flagging the entire drive as bad.  eject the tape and up the drive should be ok
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