IBM System Storage EXP2512 Express Storage Enclosure, Installation, User'S, And Maintenance Manual

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The EXP2500 is designed to run continuously, 24 hours a day. Turn off the power
only under one or more of the following conditions:
v Instructions in a hardware or software procedure require you to turn off the
power.
v A service technician tells you to turn off the power.
v
A power outage or emergency situation occurs. See “Turning off the EXP2500 in
an emergency.”
To turn off the EXP2500, complete the following steps:
1. Make sure that all amber status or fault LEDs on the EXP2500 are off. If any
status or fault LEDs are lit (on hard disk drives, power supplies, or ESMs),
identify or correct the problems before you turn off the power. For more
information, see Chapter 5, “Solving problems,” on page 41.
2. On the server to which the EXP2500 is connected, either directly or through
another supported device that contains a RAID controller to which the EXP2500
is connected, close all operating-system windows and programs; then, shut
down the server.
3. Shut down any device that contains a RAID controller to which the EXP2500 is
connected.
4. Remove power from both EXP2500 power supplies.
Turning off the EXP2500 in an emergency
Attention: Emergency situations might include fire, flood, extreme weather
conditions, or other hazardous circumstances. If a power outage or emergency
situation occurs, always turn off all power switches on all computing equipment.
This will help safeguard your equipment from potential damage due to electrical
surges when power is restored. If the EXP2500 loses power unexpectedly, it might
be due to a hardware failure in the power system or midplane. See Chapter 5,
“Solving problems,” on page 41.
To turn off the EXP2500 during an emergency situation, complete the following
steps:
1. If you have time, stop all activity and check the LEDs (front and rear). Make
note of any status or fault LEDs that are lit so that you can correct the problem
when you turn on the power again.
Note: See the documentation that comes with your RAID controller for
information about correcting the problem.
2. On the server to which the EXP2500 is connected, either directly or through
another supported device that contains a RAID controller to which the EXP2500
is connected, close all operating-system windows and programs; then, shut
down the server.
3. Shut down any device that contains a RAID controller to which the EXP2500 is
connected.
4. Remove power from both EXP2500 power supplies.
Chapter 3. EXP2500 controls, LEDs, and power
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