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SCSI Connections
SCSI Restrictions
CAUTION: Do not mix narrow, single-ended SCSI, fast, wide differential SCSI, or ultra, wide-
SE SCSI peripherals on the same SCSI bus.
Fast, Wide, Differential SCSI Bus Configuration Constraints
FWD SCSI does not work with either SE SCSI.
Table 22 shows the configuration constraints for each FWD SCSI device
type.
CAUTION: Do not mix narrow, single-ended, fast, wide differential, or ultra, wide-SE SCSI
peripherals together on the same bus.
Ultra, Wide-SE SCSI Bus Configuration Constraints
Ultra, wide single-ended SCSI does not work with narrow, single ended or fast wide
differential SCSI. Table 22 shows the configuration constraints for each ultra, wide-
SE SCSI device type.
CAUTION: Do not mix narrow, single-ended, fast, wide differential, or ultra, wide-SE SCSI
peripherals together on the same bus.
Table 22 FWD SCSI Bus Configuration Constraints
FWD SCSI Devices
Maximum Number of Each Type
of Device Allowed
FWD SCSI Disk Drive (up to 2 internal) 15
FWD SCSI Disk Arrays (addressed as single
drive)
7
Table 23 Ultra, Wide-SE SCSI Bus Configuration Constraints
Ultra, Wide-SE SCSI Devices
Maximum Number of Each Type
of Device Allowed
Ultra, Wide-SE SCSI Disk Drive (up to 2 internal) 4
Ultra, Wide-SE SCSI Disk Arrays (addressed as
single drive)
1