I asked about the number of drives because that monster is a 7-disk array, but I have never had more than 6 disks installed. (4x4.5Gb and 2x18Gb). If the bus could handle seven, I'll put them in my case, if not, then I get to build a smaller, more eye-pleasing case.

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Just to make sure that you took note of Aoresteen's math, the *total* number of drives on the scsi bus can be as high as 7. Included in that total are any internal drives. So, if you already have an internal drive, then you may have up to 6 external drives. If you have, say, an internal HD and a CDROM drive as well, then you can have only 5 external drives, etc. Each SCSI device on a bus, whether internal or external (it's all the same bus), must have a unique ID. Since only 3 bits are allocated for the ID (in the original implementation), and one ID is reserved for the host (e.g., computer), you're left with that maximum of 7 other scsi devices.

Sorry if this is already obvious. Redundancy never hurts (it's just dull).