Hi,
Old client: Windows Server 2003 SP2
New client: Windows Server 2008 R2 SP1
File server: Windows Server 2012 R2 with 2014 November Rollup
Copying a folder with a large number of files from a file share using Windows Server 2003 is about twice as fast than copying the same folder from the same file server using Windows Server 2008 R2. Robocopy statistics:
Windows Server 2003:
C:\>robocopy \\server\share C:\temp\test /MIR /NP /NJH /NFL /NDL /NP
-----------------------------------------------------------------------------
Total Copied Skipped Mismatch FAILED Extras
Dirs : 209 208 1 0
0 0
Files : 7500 7500 0 0 0
0
Bytes : 405.53 m 405.53 m 0 0 0 0
Times : 0:01:04 0:01:03 0:00:00 0:00:01
Speed : 6722641 Bytes/sec.
Speed : 384.672 MegaBytes/min.
Ended : Thu Nov 20 22:00:16 2014
Windows Server 2008 R2:
C:\>robocopy \\server\share C:\temp\test /MIR /NP /NJH /NFL /NDL /NP
-------------------------------------------------------------------------
Total Copied Skipped Mismatch FAILED Extras
Dirs : 209 208 1 0 0
0
Files : 7500 7500 0 0 0
0
Bytes : 405.53 m 405.53 m 0 0 0 0
Times : 0:02:13 0:02:11 0:00:00 0:00:01
Speed : 3224473 Bytes/sec.
Speed : 184.505 MegaBytes/min.
Ended : Thu Nov 20 22:03:18 2014
I found some tips suggesting to disable SMB Signing on the Windows Server 2008 R2 client, but that didn`t make any difference (I modified the local security policy, not the Default Domain Policy as suggested in the article I found).
Any ideas why there is such a huge difference?
An application accessing the file share is behaving much slower on Windows Server 2008 R2 compared to Windows Server 2003 due to this issue.