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
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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