HP ProLiant ML110 G7 Server - Manual (Page 16)

Component identification 16
LED3 pattern LED4 pattern Interpretation
—
One blink every
two seconds
The system is powered down, and the cache contains data that has not
yet been written to the drives. Restore system power as soon as
possible to prevent data loss.
If 3.3 V auxiliary power is available, as indicated by LED 2, then data
preservation time is extended. If no auxiliary power is available, only
battery power preserves the data. A fully-charged battery can
normally preserve data for at least two days.
The battery lifetime also depends on the cache module size. For more
information, see the controller QuickSpecs on the HP Product Bulletin
website ( http://www.hp.com/go/productbulletin ).
— Double blink, then
pause
The cache microcontroller is waiting for the host controller to
communicate.
—
One blink per
second
The battery pack is below the minimum charge level and is being
charged. Features that require a battery (such as write cache, capacity
expansion, stripe size migration, and RAID migration) are temporarily
unavailable until charging is complete. The recharge process takes
between 15 minutes and 2 hours, depending on the initial capacity of
the battery.
— Steady glow The battery pack is fully charged, and posted write data is stored in the
cache.
— Off The battery pack is fully charged, and write data is not posted in the
cache.
One blink per
second
One blink per
second
An alternating green and amber blink pattern indicates that the cache
microcontroller is executing from within its boot loader and receiving
new flash code from the host controller.
Steady glow — There is a short circuit across the battery terminals or within the battery
pack. BBWC features are disabled until the battery pack is replaced.
The life expectancy of a battery pack is typically more than three
years.
One blink per
second
— An open circuit is across the battery terminals or within the battery
pack. BBWC features are disabled until the battery pack is replaced.
The life expectancy of a battery pack is typically more than three
years.