I have a Sans Digital TR5UT that I've been using for over a year now. One of the drives failed, so I bought a replacement for it, removed the old one, inserted the new one and turned on the TR5UT for the rebuild. Everything seemed to work fine at first... the rebuild started... but it's been going on for days now. There are 3 2TB drives in RAID 5, and I've disconnected it from my server for the rebuild. the manual says the rebuild happens at about 200gb/hr, so it should take about 10-20 hours. It's been going for 4 days. I've sent Sans Digital a support request but have not heard back... anyone have any ideas?