3-4
Sun StorEdge Expansion Cabinet Installation and Service Manual • July 2000
3.2
Powering Off the Expansion Cabinet
Before you turn off the power to the expansion cabinet, you must halt any I/O
between host system(s) and devices in the expansion cabinet.
Depending upon the type of devices in the cabinet, the type of host system(s), and
the software running on the host system(s), you may need to:
■
Stop software from accessing devices in the enclosure
■
Exit the Solaris operating environment
■
Turn off power to your host system(s).
Refer to the following for specific instructions:
■
Solaris Handbook for Sun Peripherals
■
System administration guides that correspond to your operating system
■
Documentation that came with the devices
■
Documentation that came with your host system(s)
Caution –
Failure to stop I/O between host system(s) and devices in the expansion
cabinet can result in the loss of data.
1. Stop I/O to devices in the expansion cabinet.
2. Turn the key switch located at the front of the cabinet to the Standby position
(
FIGURE 3-1
).
3. At the bottom of the expansion cabinet, remove the trim panels and turn the AC
power sequencer circuit breakers to Off (
FIGURE 3-2
).
4. If you are servicing components other than disk or tape drives (such as the power
sequencer), disconnect the cabinet power cords from the grounded outlets.
Caution –
When you service disk or tape drives, do not disconnect the power cords
from the power sequencer in the cabinet or the cabinet’s power cord from the outlet.
These connections provide the ground paths necessary to prevent any damage
caused by electrostatic discharge to the drives installed in the cabinet.
Caution –
You must disconnect the power cables to both power sequencers if you
want to stop all AC power input to the expansion cabinet.
