HP Surestore Disk Array 12h and FC60 - Manual (Page 188)

188 Attaching SCSI Cables and Configuring the Disk Enclosure Switches
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.
Figure 69 illustrates full-bus
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.
Note For consistency and ease of managment, it is recommended that you observe
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 Figure 69 .
2. Connect the other end of the SCSI cable to the disk enclosure BCC A, SCSI connector B.
Note
The lower BCC is inverted from the upper BCC. Make sure you take this into
account when setting the switches.
3. Set the Enclosure (Tray) ID rotary switches on both BCCs to “0”. See Figure 68 .
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
Figure 68 .
5. Connect a terminator to SCSI connector A on BCC A (see Figure 69 , “T”).
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.