Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Single-Ended I/O Module
5–2 UltraSCSI RAID Enclosure
Note
Not all array controller firmware supports an UltraSCSI
RAID subsystem with more than one enclosure. Refer to
the array controller documentation to ensure that the
controller supports expanded configurations.
Six I/O modules mount on the bottom rear (see Figure 5–2,
CALLOUT 1) of each enclosure. These modules connect the array
controller to the devices in the expansion enclosures. In an UltraSCSI
RAID subsystem, the I/O module number corresponds to the SCSI
bus number. For example, SCSI bus 2 and I/O module 2 are different
elements of the same
physical bus
.
Figure 5–2 I/O Module Location
Odd numbered I/O ports are located in the bottom row and even
number ports are located in the top row (see Figure 5–3). Viewing
from the enclosure rear, port 1 is in the lower right corner and port 6
is in the upper left corner.
Figure 5–3 I/O Module Numbering
Figure C
ALLOUT
1. SCSI bus
ports (1–6) for
I/O modules
(1–6),
respectively
CXO5805B
2
1
4
3
6
5
1
CXO5819A
642
531