I am head of it for a small 3 branch library system. Last year we upgraded our main branch server to Windows 2008R2 and I built a backup system using a raid enclosure with 2 2T WD drives. This does raid 1 and uses the built in imaging system in 2008R2. The enclose was built by startec but it appears they are no longer made. I want to upgrade 1 of our other branches basically the same way. Any recommendations for reasonally priced raid enclosure?