Mylex DAC960PG, Installation Manual

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SCSI Cabling
3-16 DAC960PG Installation Guide
Connecting Non-Disk Devices
Non-disk SCSI devices, such as a tape drives or CD-ROM drives, will need
to have their own unique SCSI ID, regardless of the channel of the
DAC960PG to which they are connected. For instance, the general rule for
UNIX systems is to set the tape to SCSI ID 2, the CD-ROM to SCSI ID 5,
with both devices connected to channel 0.
Figure 3-7. Connecting Non-disk Devices
m
Caution
Connecting non-disk devices to DAC960PG drive
channels can result in disk drive performance loss.
While the DAC960PG does support non-disk devices, their use on SCSI
channels containing disk drives is not recommended. The affect these
devices have is to slow the controller’s performance on that channel
to the I/O transfer rate of the tape or CD-ROM drive, instead of the much
faster rates supported by most hard drives.