Attention: The NVRAM LED blinks while destaging contents to the flash memory when you halt
the system. After the destage is complete, the LED turns off.
– If power is lost without a clean shutdown, the NVMEM LED flashes until the destage is
complete, and then the LED turns off.
– If the LED is on and power is on, unwritten data is stored on NVMEM. This typically occurs
during an uncontrolled shutdown after ONTAP has successfully booted.
Step 2. Locate the NVMEM battery in the controller module.
Step 3. Locate the battery plug and squeeze the clip on the face of the battery plug to release the plug from
the socket, and then unplug the battery cable from the socket.
Step 4. Grasp the battery and press the blue locking tab marked PUSH, and then lift the battery out of the
holder and controller module.
Step 5. Move the NVMEM battery to the replacement controller module.
Step 6. Loop the battery cable around the cable channel on the side of the battery holder.
Step 7. Position the battery pack by aligning the battery holder key ribs to the “V” notches on the sheet
metal side wall.
Step 8. Slide the battery pack down along the sheet metal side wall until the support tabs on the side wall
hook into the slots on the battery pack, and the battery pack latch engages and clicks into the
opening on the side wall.
Moving the boot media
You must locate the boot media and follow the directions to remove it from the old controller module and
insert it in the new controller module.
Step 1. Locate the boot media using the following illustration or the FRU map on the controller module:
Chapter 5. Hardware replacement procedures 47
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