NVRAM Battery Charging Instructions
16
System Hardware Guide
NVRAM Battery Charging Instructions
If the NVRAM card in your Data Domain system has fully charged batteries, the system starts up
normally. In most systems, however, the batteries need to be charged to ensure they are either at or
near maximum capacity.
If the batteries are partially discharged when you power up the system, an error light at the back of
the NVRAM card begins blinking, and an error message similar to the following appears on the
console:
NVRAM0: Size 5224288 KB, Battery 1 Enabled (FAILURE), Battery 2
Enabled (FAILURE)
Although the batteries begin to recharge after the system is powered on, it can take up to three
hours before they are fully charged. The system cannot be used before all of the batteries are fully
charged. Plan ahead when you schedule your installation.
Battery Charge Verification
Note
Depending on the system, a NVRAM card has either two or three batteries. Some systems
contain two NVRAM cards.
Follow these instructions if your system starts up normally:
1.
Enter the command
system show nvram
to check that each battery is enabled and
charged. The output is similar to the following:
NVRAM Card:
component value
------------------- ---------------------
memory size 1024 MB
window size 16 MB
number of batteries 2
errors 0 PCI, 0 memory
battery 1 99% charged, enabled
battery 2 99% charged, enabled
2.
If an error light at the back of the NVRAM card begins blinking, or the system does not start
up, see the next section, “Battery Recharging Procedure”.”
