SCSI-2 definition hardware
A version of the SCSI
SCSI-2 shares the original SCSI's asynchronous
modes and adds a "Fast SCSI
" mode (Wide SCSI" (16 bit, Another major enhancement was the definition of command sets for different device classes. SCSI-1 was rather minimalistic in this respect which led to various incompatibilities especially for devices other than hard-disks. SCSI-2 addresses that problem. allowing scanners
, hard disk drives, CD-ROM
drives, tapes and many other devices to be connected.
Normal SCSI-2 equipment (not wide or differential
) can be connected to a SCSI-1 bus and vice versa.