You can provide multiple CD-ROMs to multiple people. Granted, in an ideal environment, you would want the throughput of SCSI CD-ROM drives. There are also disadvantages to SCSI drives. They are more expensive and harder to configure. A cheaper alternative is to use a bunch of IDE CD-ROM drives.
Many people even have slower ones lying around because they just had to have a faster one.
I assume that you can assemble all of the parts necessary. The most unusual component is the IDE controller which we have describe below, and it is not even that unusual. The only key to this server is that you can have up to four IDE channels, each capable of supporting two drives. Assuming you use a single IDE hard disk for booting, that leaves up to seven connection points for additional IDE devices, in this case CD-ROM drives. Many motherboards are capable of supporting one or two IDE channels, so configuration instructions vary slightly.