I have a network ACD customer running ACD on a 2U MASR3 RAID 5. One of the hard drives failed yesterday and I am not getting a very quick or warm fuzzy response from tech support. I know the drives are a 73 gigabyte SAS hard drive but what I don;t know is this:

1. Is it 10K or 15K for speed?
2. Can they get any brand hard drive that is the same?
3. Is it hot swappable?
4. Will the replacement hard drive start being rebuilt once put in?

Any help would be appreciated.