Slow network file copy

[i601254]

Have a strange problem that I cannot figure out. Have 2 Compaq rackmount servers. One is a Win2k Domain Controller (server A), the other is a Win2k member server with Exchange 2000 (server B). Very small number of users in this location (40-50).

I can copy a 600M file from my WinXP workstation to server A in 2-3 minutes. If I try and copy that same file to server B, it indicates that it will take 200 minutes!

I've also tried copying that same file from server A to server B with the same results. However, if I copy that file from server B to server A, it copies in 2-3 minutes. Both these servers are in the same subnet and in the same physical location.

I've checked all network settings, file permissions and attributes. There is no compression or encryption enabled or any indication of extreme resource utilization on server B.

I am stumped.

 

[igortsin]

Antivirus????

 

[ADB100]

NIC & Switch settings?? Make sure speed & duplex are set correctly - either forced at NIC and switch-port or Auto on NIC & switch-port.

Andy

 

[i601254]

Checked the NIC, it's running 100mb full duplex. I have turned off Norton realtime protection. The only other antiv is Sybari's Antigen but that's running for Exchange and shouldn't have any impact on file copies(???).

I will try another port on the switch.

 

[i601254]

It can't be the switch since copying a file out from server B to server A (or any other server) copies just fine in 2-3 minutes. The problem is moving/copying a file TO server B.

 

[EntilzaSte]

Hi,

We had the same problem when we first put our Compaq's in. Problem seemed to be due to the way the nic's went into the switches. The switches needed hard setting not autodetecting, and we needed to ensure the cards went into the same switch not different ones.

Also if you have turned on the nic teaming, it would be worth turning it off. Some revisions of compaq build dont support the teaming properly...

Rgds

Steve

 

[inkydvd]

Hi

Had this problem as well. 1st Are you copy pasting a database?

What could solve the problem is to put all to half duplex

cheers

 

[i601254]

EntilzaSte nailed it. I set the switch port to 100Mbs instead of autosense and bam, my backup went from 1Mbps to 450Mbps.

Thank you.

 

[EntilzaSte]

i601254, anytime

Ste