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Poor Network performance for Windows 2000 machines (Backup Exec 2010)

Level 2

I am wondering if anybody is having the same issues as we are.  We have about 10 machines that run a legacy billing application and unfortunately have to stay Windows 2000 Server SP4.  I am doing standard deduplication jobs and the throughput speeds I am seeing are around 120Mb/Min  when these servers are all on 1gb ports.  I am not seeing any CRC errors or errors in general on the switch side.  When logged into the clients, the ports are not even being touched, as I see less than 1% on both the client and about 4% used on the backup server.  The only thing that is non-standard is that the backup server is on a different subnet, but still local to the same data center.  I am not sure even that putting the backup server interface on that same subnet would increase the performance that much, however I am willing to try anything at this point.

Level 6
Can you turn off the dedupe and see if it makes a difference?  Can you use media server dedupe instead?

What about using jumbo frames to increase throughput?  Also hard setting your NIC's to 1000Mb_Full vs auto_negotiate?

Level 6
Partner    VIP    Accredited Certified
perhaps you should disable the chimney offload.
Please view the following articles by Microsoft.

All the best,
Save the Earth, it's the only planet with chocolate.

Level 2

Turning off dedupe does not really make a difference.  Backup times and performance are about the same going to a backup to disk folder.  I also am using the AOFO option and lately I have noticed the AOFO store building up and not releasing older files from that store. 

As far as jumbo frames, I need to talk with the network team to see if that is enabled on the network side, I can try that.  As far as hard setting the nic's to full on both sides and 1000Mb, if both are negotiating fine with no errors or drops, will that make a difference (Btw not a network guy by any means)