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Replacing the NVRAM backup battery pack
To replace the NVRAM backup battery pack in a server, you remove the old battery and
install the new replacement. Perform the battery pack replacement as quickly as
possible, and only when the new pack is present.
The replacement NVRAM backup battery pack comes pre-assembled. Do not remove the
batteries from the case.
Note: If possible, shut down the server before replacing the battery backup
pack. Shutting down the server or migrating all of the EVSs to the other node
is not required. However, during the replacement procedure, there will be a
period of time when the NVRAM contents are not backed up by the battery
pack. If a power failure occurs during this period, the NVRAM contents may
be lost.
Checking battery pack status
The battery pack status LED indicates the status of the server's NVRAM battery pack.
LEDs
Red
Off
Figure 19 Battery pack status LED location
Battery-related events are recorded in the server's event log. Other battery-related
information is also saved in a battery status log. These logs, along with the server's event
log, are useful in monitoring the state of the battery.
Hitachi NAS Platform 3080 and 3090 G2 Hardware Reference
Table 18 Battery pack status LED
If this LED is on immediately after installing a new battery pack, it
indicates that an initial battery charging and conditioning cycle is in
progress. The initial battery conditioning takes approximately 24
hours, and the LED will turn off after the cycle is complete.
If this LED is on during normal operation (not after installing a new
battery pack), either the battery has exceeded its two year life or a
problem has been detected. Check the battery status before
determining any service operation.
Normal operation.
Chapter 6: Replacing server components
Replacing the NVRAM backup battery pack
Meaning
54
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