But then again, you can make "standard" IDE drives hot swappable with some racks as well. Plus, the "Full Specifications" of that rack on that page are a joke. It doesn't "specify" anything. Seems to me there is no way to get at drives, other than opening the case, which really doesn't sound like very efficient "hot swapping" to me. I could be wrong, but I just can't tell anything by looking at that site... Anyhow, current SATA drives don't allow for hot swapping, as Nebor said, SATA II will.
\Dan