Re: Communications slow between two servers
I'm not familiar with Smart Sync, so can't comment on that. But can you reproduce the problem outside of that software? For example do you see the same slowness if you use RoboCopy or DFSR? Take a look at this post: http://social.technet.microsoft.com/Forums/en-US/winserverfiles/thread/e55022a4-db65-4dc9-a2f1-96b7f5d8e2fa Even though you aren't using DFSR, it might give you some ideas. Specifically I'd look at the TCP off-load value . That might help. Christopher Bodnar Enterprise Architect I, Corporate Office of Technology:Enterprise Architecture and Engineering Services Tel 610-807-6459 3900 Burgess Place, Bethlehem, PA 18017 christopher_bod...@glic.com The Guardian Life Insurance Company of America www.guardianlife.com From: Eric Brouwer ithelp.e...@gmail.com To: NT System Admin Issues ntsysadmin@lyris.sunbelt-software.com Date: 02/26/2013 10:18 AM Subject:Communications slow between two servers 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin - This message, and any attachments to it, may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are notified that any use, dissemination, distribution, copying, or communication of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately by return e-mail and delete the message and any attachments. Thank you. ~ 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadminimage/jpeg
RE: Communications slow between two servers
Anti-virus? From: Eric Brouwer [mailto:ithelp.e...@gmail.com] Sent: Tuesday, February 26, 2013 8:58 AM To: NT System Admin Issues Subject: Communications slow between two servers 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
RE: Communications slow between two servers
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: phil.ran...@hoopleltd.co.ukmailto:phil.ran...@hoopleltd.co.uk From: Steve Ens [mailto:stevey...@gmail.com] 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 ithelp.e...@gmail.commailto:ithelp.e...@gmail.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
RE: Communications slow between two servers
X has AV installed? From: Steve Ens [mailto:stevey...@gmail.com] Sent: Tuesday, February 26, 2013 11:04 AM 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 ithelp.e...@gmail.commailto:ithelp.e...@gmail.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
RE: Communications slow between two servers
TCP offload/chimney settings? It's always that. Don't know why it even still exists. From: Miller Bonnie L. [mailto:mille...@mukilteo.wednet.edu] Sent: Tuesday, February 26, 2013 11:25 AM To: NT System Admin Issues Subject: RE: Communications slow between two servers And NIC firmware? TCP offload/chimney settings? From: Steve Ens [mailto:stevey...@gmail.com] Sent: Tuesday, February 26, 2013 7:46 AM 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 ithelp.e...@gmail.commailto:ithelp.e...@gmail.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
RE: Communications slow between two servers
Verify duplex settings. A long time ago I had an HP server and a Cisco switch with both sides having auto-detecting speed and duplex. Weird things happened when transferring large quantities of data because the NIC thought the connection was full duplex and the switch thought it was half. Forcing both sides to full duplex resolved the issue. -Jeff From: Christopher Bodnar [mailto:christopher_bod...@glic.com] Sent: Tuesday, February 26, 2013 10:43 AM To: NT System Admin Issues Subject: Re: Communications slow between two servers I'm not familiar with Smart Sync, so can't comment on that. But can you reproduce the problem outside of that software? For example do you see the same slowness if you use RoboCopy or DFSR? Take a look at this post: http://social.technet.microsoft.com/Forums/en-US/winserverfiles/thread/e55022a4-db65-4dc9-a2f1-96b7f5d8e2fa Even though you aren't using DFSR, it might give you some ideas. Specifically I'd look at the TCP off-load value . That might help. Christopher Bodnar Enterprise Architect I, Corporate Office of Technology:Enterprise Architecture and Engineering Services Tel 610-807-6459 3900 Burgess Place, Bethlehem, PA 18017 christopher_bod...@glic.commailto: [cid:image001.jpg@01CE1416.C8CC47B0] The Guardian Life Insurance Company of America www.guardianlife.comhttp://www.guardianlife.com/ From:Eric Brouwer ithelp.e...@gmail.com To:NT System Admin Issues ntsysadmin@lyris.sunbelt-software.com Date:02/26/2013 10:18 AM Subject:Communications slow between two servers 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.commailto:listmana...@lyris.sunbeltsoftware.com 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 listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmininline: image001.jpg
