User`s guide

StorageWorks SCSI Buses
5.5 SBB Shelf with Two SCSI Buses
5.5 SBB Shelf with Two SCSI Buses
Use the following procedure to configure an SBB shelf for two SCSI buses, one
with three devices and one with four devices, as shown in Figure 5–4:
1. Turn off the shelf power by disconnecting the power cable from the shelf
power SBBs.
2. Remove the blowers as described in Section 3.2.
3. Discharge any static buildup by momentarily touching a finger to a blank
space on the backplane.
4. Make sure that the SHELF_OK jumpers are installed correctly on either the
backplane or on both the terminator board and the jumper board as described
in Chapter 2.
5. Install the BA35X–MB terminator board in the backplane connector behind
slot 5.
6. Install the unused BA35X–MC jumper board in the backplane connector
behind slot 1.
7. Connect the SCSI cable for device addresses 0, 2, and 4 to the upper
connector.
8. Connect the SCSI cable for device addresses 1, 3, 5, and 6 to the lower
connector.
9. Replace the blowers as described in Section 3.2.
10. Turn on the power and verify that all the devices are active.
Figure 5–4 SBB Shelf SCSI Buses
T
0
1
23456
POWER
CXO-3597B-MC
3-DEVICE BUS INPUT
4-DEVICE BUS INPUT
J
BUS LENGTH: 0.4 m (16.4 in)
JA1
JB1
BUS LENGTH: 0.6 m (23.6 in)
(7)
5–8 StorageWorks SCSI Buses