Introduction
1–12
Single-Ended SCSI Bus Configuration Constraints
For the single-ended SCSI bus, HP-UX supports only one of each type of removable-
media disk drive (i.e., floppy disk, CD-ROM, or magneto-optical drives) and two of the
same type tape devices (i.e., 4-mm DDS tape drives or 9-track tape drives) per SCSI bus.
You may connect no more than seven SCSI devices to each single-ended SCSI bus.
Table 1–1 shows the configuration constraints for each single-ended SCSI device type.
You may connect no more than seven SCSI device IDs to each single-ended SCSI bus.
Some SCSI devices use more than one SCSI drive address. Each address must be ac-
counted for in the maximum number of SCSI devices allowed.
CAUTION: Do not connect single-ended SCSI devices to a differential SCSI
bus or differential SCSI devices to a single-ended SCSI bus. Con-
necting a SCSI device to the wrong SCSI bus can cause system
failure.
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