IBM 260 Personal Computer User Manual


 
110 RS/6000 43P 7043 Models 150 and 260 Handbook
No external attachments are allowed
External Ultra devices running at Ultra speeds:
No internal attachments allowed.
Up to four external Ultra wide (16-bit) devices can be attached to the
external port. Maximum cable length must not exceed 3 meters.
Up to three external Ultra (8-bit) devices can be attached to the
external port. Maximum cable length must not exceed 3 meters.
Ultra or SCSI-II Fast devices running at SCSI-II Fast speeds,
Up to six devices attached to the internal port (dependent on internal
system configuration and cabling).
External attachment of up to four independent physical enclosures is
allowed, provided each physical enclosure presents only one load to
the SCSI bus. The total bus length must not exceed 3 meters. Total bus
length includes internal and external cable length.
Multiple SCSI-II Fast devices in external enclosures:
No internal attachments allowed.
Maximum combined internal (to enclosure) and external cable length is
3 meters.
Loads on the cable (cable length between devices). They must be 0.1
meters apart at a minimum.
No mixing of bus widths (8-bit and 16-bit) unless the 68-pin-to-50-pin
interposer (PN 92F2565 or equivalent) is used.
The following tables describe the cables and terminator features, part
numbers, and lengths for the PCI Single-Ended Ultra SCSI Adapter (# 6206).
Cables and Terminators for Single-Ended SCSI Adapters
In the following tables, the cables and terminators of the following
single-ended SCSI adapters are listed:
PCI Single-Ended Ultra SCSI Adapter (# 6206)