If the module temperature exceeds 45° C (113° F), the storage management software displays a Needs Attention icon in the Subsystem Management window. If event monitoring is enabled, and event notification is configured, the software issues the following two critical problem notifications:
vIf one power supply shuts down, the storage management software displays a Needs Attention status in the Subsystem Management window.
vIf both power supplies shut down, the module shuts down, and the storage management software displays a Not Responding status in the Array Management window.
Use the following procedure to resume normal operation after a power supply shutdown.
Attention: Risk of damage from overheating - The power supplies automatically shut down when the air temperature inside the cabinet reaches 68° C (154° F). If the power supplies shut down, immediately remove all cabinet panels to help cool the cabinet air temperature and to prevent damage to the DS4000 storage subsystem configuration components.
1.Remove the front cover.
2.If applicable, mute the alarm.
3.Did you use the procedure “Troubleshooting the storage subsystem ” on page 124 to identify an overheating problem?
v Yes - Go to step 4.
vNo - Perform the procedure “Troubleshooting the storage subsystem ” on page 124 to verify that the power supplies have shut down because of an overheating problem, and then go to step 4.
4.Stop I/O activity to the storage subsystem and all attached storage expansion enclosures.
5.Take all or some of the following measures to alleviate the overheating problem:
vRemoving all panels from the cabinet immediately
vUsing external fans to cool the area
vShutting down the power to the storage expansion enclosure, using the procedure described in “Performing an emergency shutdown” on page 136
6.Wait for the air temperature in and around the storage subsystem to cool.
After the temperature inside the power supplies cools to below 65° C (149° F), the storage subsystem is capable of
7.Did the power supply and fan units restart automatically?
vYes - Go to step 9 on page 140.
vNo - Go to step 8.
8.Turn off the power switch on each controller in the storage subsystem, power off all connected storage expansion enclosures, and flip the disconnected devices to the OFF position (for models with dc power supply and fan unit CRUs only). Wait 1 minute and then turn on power to all connected storage expansion enclosures and flip the disconnected devices to the ON position (for models with dc power supply and fan unit CRUs only).
