Hi Mark

an single fast internal SCSI drive will be the best option - a 15k RPM SCSI drive is standard in the Catalyst PRO servers we build in the UK. The Fujitsu MAX3147NP seems to have one of the fastest seek times at the moment.

There have been lots of posts here about the pros and cons of various RAID configurations - I believe (and Richard will correct me on this) that the only viable external RAID system tested so far is the Apple Xserve Raid unning over fibre channel.

This does all, of course, depend on what you are aiming to do with your Catalyst server and the content thereon.

Nev.
Digital Services Manager
PI Digital