We have a Windows Server 2003 based server sharing a folder through a gigabit interface that receives a 10gb file every hour from another server. This server is a Dell PowerEdge 830 with two SCSI disks on RAID-1 with a PERC4/SC adapter. The transfer occurs on almost 10 minutes, and the server becomes unusable during the transfer period. We can't even open Windows Explorer, Task Manager or access the server via VNC. We need some advice about what the problem is, or how to track further to find the problem.
This is almost certainly due to the write buffer on the server inflating because the inbound transfer exceeds the write rate of the disk subsystem - see Mark Russinovitch's article on network copy behavior in various Windows Versions here.
The engine he is talking about here is the one from Windows XP (and W2K3).
Once the buffering exceeds the total amount of free physical RAM on the system you're going to see physical paging in addition to the writes associated with the copy, and you also have all standard Windows IO activity still trying to proceed. As soon as you try to initiate a new process that triggers further paging - slowing everything down again.
You may have an issue with your disks but even under ideal conditions it's unlikely that a RAID 1 config on this server could sustain a 10Gig write stream much faster than about 40-50Meg/sec while your GigE link will almost certainly exceed that (and could easily be double that, if not slightly more).
Your options are:
This sounds very familiar -- I've been wrestling with a similar issue. See these two threads: