Does the server have a 100Mb network adapter?  If so, make sure that the speed 
and duplex settings for that adapter match those on the switch that the server 
is connected to.  Normally, you'll want to force the switch and server to 
100Mb/full duplex.

That's the only reason I've seen for such a drastic reduction in backup 
performance.  We run into it all the time on NetBackup client machines (as the 
NetBackup servers don't change often).

-Michael


-----Original Message-----
From: WEAVER, Simon [mailto:Simon.WEAVER AT astrium-space DOT com]
Sent: Thursday, September 26, 2002 6:31 AM
To: 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: [Veritas-bu] Is Netbackup to blame


Hello,
I have a question regarding our current Backup throughput to one of our most
critical Windows NT Servers.
Prior to a hardware failure on our Server, we were getting approx 4.5MB a
second on backups within a stream.

We had a hardware failure with a Compaq Array 4000. Our Data was spread
across 2 of these Compaq Arrays.
We recreated the NT Partition and restored the Data.

Now, we are unable to get any good backups, and throughput has been reduced
from 4.5MB to 100k/second. Sometimes if we are lucky in the evenings, we get
422k/Second.

On all our other backups, through put is exactly the same. It is only
focused on the Server that had the disaster! I am at a complete loss as to
what the actual problem is! 

Has anyone ever come across this problem or seen anything like it? If anyone
has any tips, please tell me! I am happy to call you and give further
details if required!

Thanks


Simon Weaver
NT Domain Administrator
Ext. 5544
Tel: 02392-705544 (Direct Dial)
Simon.Weaver AT Astrium-Space DOT com

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