Installation guide

4.3 Dual-Host Installation of an SF3xx Storage Array
4.3.2 Cabling the Storage Array (Dual-Host)
Start at the rear of the SF3xx storage array cabinet.
1. Plug the main power cable of the storage array into its power receptacle.
WARNING
Hazardous voltages are in the storage array and in the components of
the storage array.
When performing any operation involving the power source, turn off
the power controls of all components and on the power controller.
Disconnect the power cable from the source outlet. Perform the
operation, then reconnect the power cable to the source.
2. Connect the 108-inch DSSI cable or cables (part number BC21Q–09) from
the array DSSI I/O panel to the system I/O panel.
a. At the system I/O panel, remove the terminator or terminators (part
number 12–31281–01). See Figure 4–11.
b. To determine which of the two DSSI connectors on the system I/O panel
to connect to:
• Open the system I/O panel by removing the screws that secure it to
the system chassis. Let the panel swing down to its rest position.
• Find the first KFMSA module installed in the system XMI
backplane. It is the KFMSA module in the lowest numbered
slot of the KFMSA modules installed.
• Follow the cabling from the backplane to the system I/O panel.
• While viewing the front of the I/O panel, note that the DSSI
connector on the right is KFMSA DSSI bus 1 and on the left is bus
2.
• For port 1, 3, and 5 on the SF3xx I/O panel, connect the 108-inch
DSSI cable to the right DSSI connector of the system I/O panel.
• For port 2, 4, and 6 on the SF3xx I/O panel, connect the 108-inch
DSSI cable to the left DSSI connector of the system I/O panel.
Installing an SF3xx Storage Array to a VAX 6000 System 4–17