Replacing the NVRAM battery module

NAS Platform and Unified Storage Series 4000 Hardware Reference

Part Number

You can easily replace the NVRAM battery pack in a server. The battery module is hot-swappable; however, if possible, shutdown the server before replacing the module.

Identify the server model before installing the battery.

The replacement battery module is pre-assembled. Do not remove the batteries from the case.

Important: During the replacement procedure, the NVRAM contents are not backed up by the battery pack. If a power failure occurs during this period, NVRAM contents may be lost. See the appropriate hardware reference or maintenance documentation for procedures to power down a server.
Figure. NVRAM battery module removal components - model 4040

Figure. NVRAM battery module removal components - models 4060, 4080, and 4100

Item Description
1 Thumbscrew that holds the battery pack in place
2 Handle for moving the battery pack forward and backward in the chassis
  1. Remove the bezel cover from the front of the server for access to the batteries.
  2. Loosen the thumbscrew to the right of the battery pack module cover by turning it counter-clockwise.
  3. Using the handle, pull the battery pack module straight out of the chassis.
    The battery pack is automatically disconnected.
  4. Insert the pre-assembled replacement module straight into the chassis, and gently but firmly push the pack into position.
    The battery pack is automatically connected.
  5. Tighten the thumbscrew by turning it clockwise.
  6. Replace the server bezel.
  7. Dispose of the old battery pack in accordance with environmental regulations or return to the supplier.