We have the same type of problems, and I think it is associated with the DLT
media. Often we will keep trying a backup and it will run very slow, and
then all of a sudden it appears to run fine. Changing the media that it
writes to seems to alleviate the problem. Try freezing the tape for which
the slow performance is occuring.
Ebon
-----Original Message-----
From: David Brown [mailto:browndav AT bronsonhg DOT org]
Sent: Tuesday, November 05, 2002 8:19 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] NB 4.5 slowing down during backups
We started having a problem here that I'm not really sure how to
troubleshoot. I have a client running Novell that holds all the customers
home directories. It does a full backup every night to a Win2000 NB 4.5
server and a Win2000 media server.
It appears to start out just fine, running at anywhere from 3-4,000kbs
speeds. However, as soon as the first tape is filled and it goes to grab a
seconds tape, it will drop down to about 5-600kbs the remainder of the
session.
It is only backing up about 75GB on this server so I wouldn't think that it
should take to long, but it has been running for well over 24 hours
sometimes. Our setup is a 9714 library with 6 DLT7000 drives.
Has anyone any insight as to why this would start happening less than
halfway through the backup? It appears to only really affect this server
and I have tried swapping NICs, routing the backup through the media server
and of course always having plenty of available media.
Not getting much help with our 800# support so thought I'd try here as well.
Thanks,
Dave
David Brown
McKesson Information Solutions
Bronson Methodist Hospital
browndav AT bronsonhg DOT org
(269) 341-7054 : office
(269) 217-0743 : cell
(269) 212-0273 : pager
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