Full-Bus Cabling And Switch Configuration - HP Surestore Disk Array 12h - And FC60 Service Manual

Full-Bus Cabling and Switch Configuration

Cabling for a full bus configuration requires connecting one SCSI cable from the controller
to the disk enclosure and setting the configuration switches.
cabling connections for a six disk enclosure array. It is possible to configure any number of
disk enclosures, from one to six, using this method. However, full bus is typically used
when four or more disk enclosures are installed in the array.
For consistency and ease of managment, it is recommended that you observe
Note
the following rules:
- Connect channel 1 on the controller enclosure to the disk enclosure mounted
directly beneath the controller enclosure. Connect channel 2 to the next disk
enclosure down, and so on down the rack.
- Install cables along the left side of the disk enclosure connectors (as viewed
from the back of the rack) and install terminators along the right side
connectors.
To configure the disk array for full-bus operation:
1. Connect one end of a SCSI cable to the controller enclosure SCSI channel 1 connector,
J12 JVD ARRAY SCSI 1. See
2. Connect the other end of the SCSI cable to the disk enclosure BCC A, SCSI connector B.
The lower BCC is inverted from the upper BCC. Make sure you take this into
Note
account when setting the switches.
3. Set the Enclosure (Tray) ID rotary switches on both BCCs to "0". See
4. Set the Enclosure DIP switches on both BCCs to the following settings:
a. Set segment 1 to "1"
b. Set the remaining four segments to "0". See
5. Connect a terminator to SCSI connector A on BCC A (see
6. Repeat the preceding steps for each disk enclosure, using the next sequential SCSI
channel and incrementing the Disk Enclosure (Tray) ID setting for each enclosure.
Attaching SCSI Cables and Configuring the Disk Enclosure Switches
154
Figure 60.
Figure
Figure 60 illustrates full-bus
Figure 59.
59.
Figure 60, "T").