HP P2000 G3 MSA Array Systems - Manual (Page 55)

HP P2000 G3 FC MSA System User Guide 55
Is the power supply’s Input Power Source LED off?
Is the power supply’s Voltage/Fan Fault/Service Required LED amber?
Controller failure in a single-controller configuration
Cache memory is flushed to CompactFlash in the case of a controller failure or power loss. During the write
to CompactFlash process, only the components needed to write the cache to the CompactFlash are
powered by the super-capacitor. This process typically takes 60 seconds per 1 Gbyte of cache. After the
cache is copied to CompactFlash, the remaining power left in the super-capacitor is used to refresh the
cache memory. While the cache is being maintained by the super-capacitor, the Cache Status LED flashes
at a rate of 1/10 second off and 9/10 second on.
IMPORTANT: Transportable cache only applies to single-controller configurations. In dual controller
configurations, there is no need to transport a failed controller’s cache to a replacement controller because
the cache is duplicated between the peer controllers.
Answer Possible reasons Actions
No System functioning properly. No action required.
Yes The power supply is not
receiving adequate power.
• Verify that the power cord is properly connected and
check the power source it is connected to.
• Check that the power supply FRU is firmly locked into
position.
• Check the event log for specific information regarding
the fault.
• Isolate the fault.
• Contact an authorized service provider for assistance.
Answer Possible reasons Actions
No System functioning properly. No action required.
Yes The power supply unit or a fan
is operating at an
unacceptable voltage/RPM
level, or has failed.
When isolating faults in the power supply, remember that
the fans in both modules receive power through a
common bus on the midplane, so if a power supply unit
fails, the fans continue to operate normally.
• Check that the power supply FRU is firmly locked into
position.
• Check that the power cable is connected to a power
source.
• Check that the power cable is connected to the power
supply module.