Star Tech DRW115ATA
The DRW115ATA is a fully-featured, high-quality swap rack for UltraATA hard drives. We liked the sturdy aluminum case and the manufacturer's refusal to use flimsy plastic parts.
You can lock down the DRW115ATA with the enclosed round key so that the hard-drive carrier can't be accidentally removed. There are also LEDs on the front panel to warn you if a fan fails or the temperature gets too high.