The devil's in the detail. Which OS?
Scalable networking pack on 2003 SP2 can cause these issues. Try turning off TCP offload, Receive Side Scaling, etc, and see if that improves anything. Oh, and check duplex settings on server and switch. Phil -- Phil Randal Infrastructure Engineer Hoople Ltd | Thorn Office Centre | Hereford HR2 6JT Tel: 01432 260415 | Email: [email protected]<mailto:[email protected]> From: Steve Ens [mailto:[email protected]] Sent: 26 February 2013 15:46 To: NT System Admin Issues Subject: Re: Communications slow between two servers NIC drivers? On Tue, Feb 26, 2013 at 8:57 AM, Eric Brouwer <[email protected]<mailto:[email protected]>> wrote: Greetings, I have an odd communications issue that I just can't pin down. I have two existing servers, X and Y. X will be replaced by a new server, Z. Then Y will be replaced by X, and Y decommissioned. These are rather simple file servers. When we brought Z online, we copied data from X to Z via Smart Sync and got fantastic transfer speeds. When we went to copy from Y to X, however, speeds are horrible. What should take several hours is taking days. We then tested communications between Y and Z and speeds are great again. All servers are on the same switch and reside in the same rack. Why would 2 servers communicate so slowly? X to Z = fast Y to X = slow Y to Z = Fast Results are the same whether we "push" or "pull" data. Thank you, Eric ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin "Any opinion expressed in this e-mail or any attached files are those of the individual and not necessarily those of Hoople Ltd. You should be aware that Hoople Ltd. monitors its email service. This e-mail and any attached files are confidential and intended solely for the use of the addressee. This communication may contain material protected by law from being passed on. If you are not the intended recipient and have received this e-mail in error, you are advised that any use, dissemination, forwarding, printing or copying of this e-mail is strictly prohibited. If you have received this e-mail in error please contact the sender immediately and destroy all copies of it. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
