Installation guide

Installing a DECarray Cabinet
4.4 Installing a DECarray Cabinet in a DSSI VAXcluster Configuration
4.4.1 Cabling the DECarray Cabinet
Start at the rear of the DECarray cabinet.
1. Plug the main power cable of the DECarray into its power receptacle.
WARNING
Hazardous voltages are in the DECarray 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 (PN 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 (PN
12–31281–01). See Figure 4–9. Store these terminators in the ESD
pouch on the rear door of the storage array cabinet.
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 resting
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 ports 1, 3, and 5 on the DECarray I/O panel, connect the
108-inch DSSI cable to the right DSSI connector of the system I/O
panel.
• For ports 2, 4, and 6 on the DECarray I/O panel, connect the
108-inch DSSI cable to the left DSSI connector of the system I/O
panel.
Installing a DECarray Cabinet 4–29