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3-16 Sun StorEdge 5310 NAS Troubleshooting Guide • December 2004
9. Turn off both power switches on the back of each drive module
End Of Procedure
3.1.2.4 Turning Off Power for an Unplanned Shutdown
Storage array modules are designed to run continuously, 24 hours a day. Certain
situations, however, may require you to shut down all storage array modules
quickly. These situations might include a power failure or emergency because of a
fire, a flood, extreme weather conditions, some other hazardous circumstance, or a
power supply shutdown caused byoverheating.Use the following procedure to turn
off power to all modules in a storage array for an unplanned shutdown. Figure 3-11
on page 3-10 shows the locations of the power supply switches.
Caution – Potential damage to drives and data loss. Turning the power off and on
without waiting for the disk drives to spin down can damage the drives and may
cause data loss. Always let at least 30 seconds elapse from when you turn off the
power until you turn it on again.
1. Stop all I/O activity to the command module and attached drives.
2. Remove the front cover from the command module, if applicable.
Caution – Potential data corruption. Turning off the power when an amber fault
light is illuminated can cause data corruption. To prevent data corruption, always
check for faults and correct all problems before turning off the power.
3. Determine the status of each module and its components.
a. Check the lights on the front and the back of each module.
A green light indicates a normal status; an amber light indicates a hardware fault.
b. Open the Array Management Window for the storage array.
c. To view the status of its components, select the appropriate component button
for each module in the Physical View of the Array Management Window.
The status for each component will be either Optimal or Needs Attention.
4. Does each module display green lights only, and is the status Optimal on each
module component?
Yes - Go to step 6.
No - Go to step 5.
5. Diagnose and correct the fault.