Thanks - I'll look forward to seeing your results. Any chance you could post a screen shot of the area where you were confused with the options that prevented you re-sizing the disks?
The disks in this server are SATA & mirrored using a hardware RAID 1 controller (Dell CERC controller - OEM from Adaptec, I think) I have had quite a few of these servers from various clients reach the 3 year mark & the disks fail - must have a built in warramty timer :) Despite the RAID, the OS is reporting large numbers of bad blocks. The array has not degraded, so I suspect that both array disks are close to failing. As you point out, I need to move this ASAP!
I was looking for a utility that provided replication of disks (or folders), as a scripted solution will not keep the removable disks in sync in close to real time. I was also wanting some level of error reporting & maybe email notification. I could write something based on RoboCopy, but I hate re-inventing the wheel! I expect there are utilities out there - just a matter of finding them. When one disk is removed & another connected as a part of the off-site rotation, they will re-mount with the same drive letter, so that is not an issue.