file copy is too slow between two physical servers

Posted on 2012-09-13
Medium Priority
Last Modified: 2012-09-18
hello everybody,
i have a Windows Server 2003 R2 Ent x64 installed blade server. i am trying to copy 200Gb db files from it to another standalone physical server with Windows Server 2008 R2 SP1. connection is 1Gbit/s over the Cisco switch.
the problem is that it takes about 6 hours to copy the files. there are not so much small chunk files. almost all of them are big files. normally it should take about 2-2.5 hours maximum 3.
do you have any suggestions?

Question by:Skiff-SS-N-23
  • 2

Accepted Solution

WotanAU earned 2000 total points
ID: 38397883
Are both servers on the Cisco Switch connecting to the switch at 1Gb/s? You could try fixing the port speed to 1000Mbps/Full Duplex, to prevent interface flapping.

You should also check Perfmon to ensure it's not a Disk I/O issue. Pay particular attention to the Disk Wait times and Queue Lengths. If they are high, it's more than likely a problem with the disk IO than the network throughput. Assuming a perfect world, with about 20% overhead, I would expect a copy like that to take ~35 minutes if your only bottleneck is network I/O.

Author Comment

ID: 38397899
i am very sorry for incorrect info.
i re-checked and saw that on the standalone server where windows server 2003 R2 is network card speed is 100Mbps, i think that's because of this server is connected to 100Mbps Cisco switch.
i will check with my network staff and try to connect it to Gbit Cisco switch.

Expert Comment

ID: 38397913
Not a problem. :)

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