CD-ROM drives are now very economical, especially if you don't need the
fastest speeds (and who does (except game junkies)). The problem is, most
of them are IDE, which is very limiting. A computer supports a maximum of
two IDE controllers with a maximum of 2 drives each. That means you can have
a maximum of three IDE CD-ROMs in a box. IDE doesn't support external devices
(limits on cable length) so they all have to be in the computer box.
Fortunately, SCSI comes to the rescue. Unfortunately SCSI CD-ROM drives cost two to three times what IDE drives cost. Each SCSI controller can have up to 7 CD-ROMS and each box can have several SCSI controllers. Still not enough? There's ways around those limitations. Out of drive letters for more CD-ROMS? There is software that will mount CD-ROMs as subdirectories - or just use a CD-ROM server which can mount them all as subdirectories.
So here are the approaches, in order of rising capacity (and cost).
©:Andrew Grygus - Automation Access - www.aaxnet.com -
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