HP ProLiant DL388e, User Manual, Page: 16 / 140

Component identification 16
FBWC module LED definitions
The FBWC module has three single-color LEDs (one amber and two green). The LEDs on the cache module
installed on a storage controller are duplicated on the reverse side of the module to facilitate status viewing.
•
Cache module installed on a storage controller
•
Cache module installed on the system board
1 - Amber 2 - Green 3 - Green Interpretation
Off
Off Off The cache module is not powered.
Off
Flashing 0.5 Hz Flashing 0.5 Hz The cache microcontroller is executing from within its
boot loader and receiving new flash code from the host
controller.
Off
Flashing 1 Hz Flashing 1 Hz The cache module is powering up, and the capacitor
pack is charging.
Off
Off Flashing 1 Hz The cache module is idle, and the capacitor pack is
charging.
Off
Off On The cache module is idle, and the capacitor pack is
charged.
Off
On On The cache module is idle, the capacitor pack is charged,
and the cache contains data that has not yet been
written to the drives.
Off
Flashing 1 Hz Off A backup is in progress.