Building a small business server, need to know what the best hard drive I can get is that wil be reliable, fast, and RIAD optimized. I want 4 1TB drives running in a RAID 10 array. I would go with the WD RE4, but they're only SATA II, which only has 3gb/s. I want it to be at least 7200 RPM so they can start up quickly. Suggestions?