StorageWorks Wide Expansion Storage Pedestal
1–4
Order Number: EK–SMCPC–UG. A01
1.3.3 Personality Module
The personality module, shown in Figure 1–3, is located above slot 0 where it plugs into
a male connector on the backplane.
NOTE
Refer to Chapter 3 for detailed information on the SCSI bus
configurations mentioned below.
Input SCSI bus connector JA1 is a 68-pin female connector that mates with a right-angle
connector on the SCSI bus cable from the host.
SCSI bus connector JB1 is also a 68-pin female connector. In a single bus configuration
with one pedestal, JB1 is not used and the personality module automatically terminates
the SCSI bus
.
NOTE
Connecting JB1 to an open-ended SCSI cable will not disable
the auto-terminator.
In a two-bus configuration with one pedestal, JB1 becomes the input for the second SCSI
bus. Connecting a SCSI bus to JB1 disables the personality module’s auto-terminator.
Installing a terminator board on the backplane terminates the two SCSI buses.
As detailed in Chapter 4, two LEDs on the personality module indicate the status of the
lower and upper blowers and indicate when an over-temperature condition is detected in
the pedestal.
Seven address switches are set off (down) at the factory and are left off when a single
pedestal is configured for either one or two SCSI buses.
Figure 1–3 Personality Module
