robocopy very bad performance on Windows Server 2008 R2
I've been using robocopy since a couple of years for syncronizing repositories and I've been always very satisfied with its performance. Recently I had to migrate one server from 2003 to 2008 R2 64bits and I realized that the same job that was taking 40 minutes in 2003 now was taking more than 8 hours in server 2008. This process was copying ACL's also and I discovered that not copying ACLs was faster, so I decided not copy ACL's and the time needed fell radically. Two months later I have migrated another server from 2003 to 2008 and... the same problem, after looking for an answer I found more people experiencing the same problem http://www.hashemian.com/blog/2009/06/robocopy-slow-on-windows-vista-and-windows-server-2008.htm Now, I think ¿what's the matter with robocopy in 2008? I need to copy ACL's of files
September 27th, 2010 6:58am

Hi, I have found this: "There is a copy program out there called AutoClone that preserves ACLs and copies much faster than Robocopy. " ref: http://arstechnica.com/civis/viewtopic.php?f=17&t=69415 HTHEdoardo Benussi - Microsoft MVP Management Infrastructure - Systems Administration https://mvp.support.microsoft.com/Profile/Benussi Windows Server Italian Forum Moderator edo[at]mvps[dot]org
Free Windows Admin Tool Kit Click here and download it now
September 27th, 2010 11:03am

thanks for your suggestion, but now I'm thinking it may be Windows 2008 related, I have found a lot of posts like this about slow copy speeds to and from windows 2008 server. http://windows2008forum.com/topic/309-slow-copy-speeds-to-and-from-windows-2008-server/ have you heard about this problem before? Finally I've found a possible solution. I'll try it tomorrow, it is related with tcp off loading on the network level http://social.technet.microsoft.com/Forums/en-US/winserverfiles/thread/e55022a4-db65-4dc9-a2f1-96b7f5d8e2fa
September 27th, 2010 3:17pm

Finally I've found a possible solution. I'll try it tomorrow, it is related with tcp off loading on the network level http://social.technet.microsoft.com/Forums/en-US/winserverfiles/thread/e55022a4-db65-4dc9-a2f1-96b7f5d8e2fa this solution applies only to DFS furthermore use robocopy without ACLs make little sense, imho.Edoardo Benussi - Microsoft MVP Management Infrastructure - Systems Administration https://mvp.support.microsoft.com/Profile/Benussi Windows Server Italian Forum Moderator edo[at]mvps[dot]org
Free Windows Admin Tool Kit Click here and download it now
September 28th, 2010 3:17am

Hi Edoardo using robocopy in 2008 without ACLs is faster and is a temporal approach for backups, but robocopy without ACLs in 2003 is even a lot faster than 2008, that's why I think it may be network related and because internet is plenty of posts about this topic related to Vista and 2008. yes, this solution applies to DFS, but I have arrived there from another post about slow copies so I suspect it may affect anything related with copying over the network (DFS, robocopy or a simple copy operation in explorer). Slow network file transfer (Server 2003 to Server 2008) http://www.petri.co.il/forums/showthread.php?t=37727 In that post, the guy says that has solved the problem following those steps. I'll try tomorrow and tell you if I'm lucky Thanks a lot
September 28th, 2010 11:56am

This topic is archived. No further replies will be accepted.

Other recent topics Other recent topics