Battery-Backed Write Cache Enabler; Battery-Backed Write Cache Enabler Leds - HP ProLiant DL580 Generation 2 Maintenance And Service Manual

Battery-Backed Write Cache Enabler

When the Battery-Backed Write Cache Enabler (BBWCE) is connected to the controller and
the server is powered on, the green LED indicates the battery charge status. When the battery
is connected to the controller and the server is powered down, the amber LED indicates the
data retention status. Figure 4-14 and Table 4-14 identify the location and status of the LEDs.
Figure 4-14: Battery-Backed Write Cache Enabler LEDs
NOTE: The battery will take 24 hours to charge for the first time.
Table 4-14: Battery-Backed Write Cache Enabler LEDs
Server Status
Server is on and has normal
run time.
Server is on and is in the first
30 seconds after power up.
Server is off and is in data
retention mode.
CAUTION: After the server is powered down, wait 15 seconds and then check the LED illumination pattern
before unplugging the cable from the battery module. The LEDs are not visible with the rear access panel on.
•
If the amber LED blinks after 15 seconds, do not remove the cable from the battery module. This module
is backing up data, and data is lost if the cable is detached.
•
If neither LED blinks after 15 seconds, it is safe to remove the cable from the battery module.
When the server is on, review the POST message before plugging or unplugging the cable from the module.
HP ProLiant DL580 Generation 2 Server Maintenance and Service Guide
LED Color LED Status
Green On
Green Off
Amber On
Amber Blinking
Amber or On
green
Amber Blinking every
15 seconds
Connectors, LEDs, and Switches
Battery Module Status
Fast charging
Trickle charging
Short in the connection of one or more of the four
button cells within the battery module
Open in the circuit between the positive and
negative terminals of the battery module
Temporary lock-out state; data is lost due to
cable being detached
User data held in write cache is being backed up
4-17