IBM HANDBOOK 260 - Manual (Page 128)

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)