I had a RAID 5 array consisting of three 1.5 TB drives (total storage space ~3TB). It uses GPT & NTFS, and it's on a Windows 2008 Server x64 machine. I recently purchased two new 1.5TB drives and added one of them to the pool. I used Intel Matrix Storage Manager to expand the capacity of the raid array (which took a very, very long time - 300+ hours). When it completed, I was prompted to restart the PC in order to make use of the new space. I did so, and now the drive is inaccessible in Windows - it claims it's unformatted. If I go to server management and select storage, Windows properly detects the array, sees the previous partition of ~3TB as well as the unallocated space. But if I hit open or explore on that partition (or right click it for properties), it claims it's unformatted. It seems like I may have just lost 3TB of data! Help! How can I get this back / what did I do wrong (or is there a problem with the software / the drives)?