Specifications

Replacement Procedures 2–53
Replacing a Fiber Cable, Switch, or Hub
Use the following steps in “Remove a Fiber Cable, Switch, or Hub” and “Install a Fiber
Cable, Switch, or Hub” to replace a fiber cable, switch, or hub.
Remove a Fiber Cable, Switch, or Hub
Use the following steps to remove a cable connected to either side of your switch or hub,
or to remove the switch or hub:
1. Shut down the host system using host documentation.
2. Shut down the controllers.
■ In single-controller configurations, shut down “this controller” with the following
command:
SHUTDOWN THIS_CONTROLLER
■
In dual-redundant controller configurations, shut down the “other controller” first,
then shut down “this controller” with the following commands:
SHUTDOWN OTHER_CONTROLLER
SHUTDOWN THIS_CONTROLLER
When the controllers shut down, the reset buttons and the first three LEDs are lit
continuously (see Figure 2–4). Receiving this indication can take several minutes,
depending on the amount of data that needs to be flushed from the cache modules.
IMPORTANT: When replacing several cables, a switch, or a hub, label each cable to facilitate
installation of the replacement item. Otherwise, subsystem errors will develop from improper
connections.
3. If replacing a cable, disconnect the failed cable at each end using needle nose pliers
(see inset on Figure 2–9).
If replacing a switch or hub, disconnect all cables connected it.
Install a Fiber Cable, Switch, or Hub
Use the following steps to install a cable connected to either side of a switch or hub, or to
install a switch or hub: