User`s guide

• To turn on the CI host port paths for a dual-redundant controller
configuration, enter the following CLI commands:
CLI> SET THIS_CONTROLLER PATH_A
CLI> SET THIS_CONTROLLER PATH_B
CLI> SET OTHER_CONTROLLER PATH_A
CLI> SET OTHER_CONTROLLER PATH_B
If you have a single controller, use only the SET THIS commands.
4.6.2.2 Installing Host Port Cables, Trilinks, and Terminators for HSD30 Array Controllers
The following procedure describes how to connect host port cables, trilink
connector blocks, and terminators for HSD30 array controllers:
1. If your HSD30 array controller’s host port connector does not have a mating
guide installed (refer to Figure 4–2), power down the controller shelf (if power
is applied) by removing the input power cables to the power supply SBBs in
the controller shelf. Take all DSSI nodes off line to remove power from the
DSSI bus that will be connected to the HSD30 array controller.
2. Plug the supplied trilink connector blocks (Digital part number 12–39921–02)
into the host port connector on the front bezel of each HSD30 array controller.
Make sure that the trilink connector pins are not bent or damaged before
installing the trilink on each HSD30 array controller’s front bezel.
3. Connect the DSSI host port cables to the trilink connector block as follows:
– If the HSD30 array controller is at the end of the DSSI bus, connect one
end of the DSSI host port cable to the trilink, and connect the other end to
the host computer, after plugging in a DSSI bus terminator (50-pin, part
number 12–31281–01) into the other trilink connector on that controller.
– If the HSD30 array controller occupies a midpoint position in the DSSI
bus, connect the DSSI host port cables from adjacent nodes to both
connectors on the trilink. The DSSI bus terminator is not used on the
trilink in this configuration. The terminator is used at the end of the bus
or on the second controller’s trilink connector as shown in Figure 4–6, if it
is at the end of the bus.
CAUTION
Before removing DSSI host port cables from the HSD30 array controller’s
trilink connector, remove power to all devices on the port (this includes
the host adapter), unless your HSD30 array controller’s host port
connector has a mating guide installed. Some DSSI host port cable
connectors are too large to allow you to remove the trilink connector block
with the cables and terminator attached. In this case, you must remove
power from the bus.
4. If you are not going to perform any other operations inside the cabinet, close
and lock the cabinet doors (this assumes your initial controller parameters
are set).
4–22 Installation