I need to shrink an E:\ partition on a file server (2008 R2) at one of our sites by about 60Gb. The partition exists in a RAID5 array made up of 3 physical disks, there is only the system partition and this data partition. I've already checked and the tool says there's far more than that reclaimable, and I know what commands to use to do it.
So I only have a couple of small questions, as it's not mentioned in anything I've read, and I've never used DISKPART to shrink a partition before:
1) Can this be done whilst the partition you're shrinking is in use? The site is 24/7, and arranging an outage would be a pain, so I just want to know whether I should be able to run the shrink without rendering the partition unusable for the time it takes to shrink. Otherwise I will have to arrange an outage window to ensure no one is using the partition when I do it.
2) Are there are obvious problems to watch out for, given that the data on this partition is critical? It's obviously backed up but as I'm sure you can understand having to completely restore it would still be considered a disaster, so I'm just looking for anyone to advise what I should be careful of, if anything (or any special considerations given the RAID5 config, or anything like that!).