If they've got an ide bus and are 2.5" form factor, then yes it will support them.

Most likely though (well, the ones I've seen) are DRAM based but with flash/laptop hdd backup & onboard small UPS (so you can pull the power and they retain contents) with a SCSI interface.

Useful for speeding up servers when you have plenty of money and can't frob the software running yourself :)

Hugo