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Chapter 3 Storage Arrays 3-27
If event monitoring is enabled, and if event notification is configured, the software
also issues one or both of the following critical problem notifications:
■ If one power supply shuts down, the storage management software will display a
Needs Attention status in the Array Management Window.
■ If both power supplies shut down, the module will shut down, and the storage
management software will display a Not Responding status in the Array
Management Window.
Use the following procedure to resume normal operation after a power supply
shutdown.
Figure 3-16 on page 3-28 shows the locations of the power supply switches.
Caution – Risk of damage from overheating. Power supplies automatically shut
down when the air temperature inside the cabinet reaches 70° C (158° F). If the
power supplies have shut down, immediately remove all cabinet panels to help cool
the cabinet air temperature and prevent damage to the modules.
1. Remove the cover.
2. If needed, turn off the alarm.
3. Did you use the procedure “Troubleshooting the Module” on page 3-22 to identify
an overheating problem?
■ Yes - Go to step 4.
■ No - Perform the procedure “Troubleshooting the Module” on page 3-22 to verify
that the power supplies have shut down because of an overheating problem.
When finished, go to step 4.
4. Stop I/O activity to the module and all attached modules.
5. To alleviate the overheating problem, perform any or all of the following cooling
measures:
a. Immediately removing all panels from the cabinet.
b. Using external fans to cool the area.
c. Shut down the power to the modules in the cabinet, using the procedure
described in “Turning Off Power for a Planned Shutdown” on page 3-11.
6. Wait for the air temperature in and around the module to cool.
After the temperature inside the power supplies cools to below 70° C (158° F), the
module is capable of a power-up recovery without operator intervention. After the
air has cooled, the power supplies should turn on automatically. If the power
supplies restart automatically, the controllers reset and return to normal operation.
7. Did the power supplies restart automatically?