I am having trouble with an Exchange 2003 system when I am trying to move two mailstores from a couple of drives to another. The current mailstore drives are nearly full and I need to move some mailstores onto a new drive array to free up disk space (I cannot extend the current array for reasons I won't go in to here).
I have done this before on this server a couple of times and not experienced any problems, however this time when I tried to move any of the mailstores from different locations, all I got was the usual dialog saying Exchange was moving them shortly followed a few minutes later with a dialog saying "Insufficient system resources exist to complete the requested service." It is worth noting that the destination file looked like it had been created by Exchange when I checked in Explorer, but it was deleted again when the process failed. I tried a couple of different stores, even ones I didn't want to move just in case it was related to those but I got the same error.
Now, it must be said that the mailstore files are quite large (one of them is over 90GB in size) so I went down that route first; perhaps there is a problem copying such a large file? I found some information that alluded to a problem with non-paged kernel memory being low/high/indifferent when copying large files, but the trail fizzled out and I was out of my depth so got stuck at that point without coming up with any kind of decent answer.
Otherwise the server itself runs fine with no issues, I've been through the event logs at the time I was doing the move and nothing jumps out as particularly remarkable.
If anyone can come up with any suggestions I'd be most grateful, I have another downtime window scheduled for this Friday evening so hopefully we can come up with something by then.
Many thanks in advance.