What must be replaced at the same time the backup battery is replaced?

What must be replaced at the same time the backup battery is replaced?
A . M.2 card and backup battery
B . Both NIC cards
C . Riser card

View Answer

Answer: A

Explanation:

When replacing the backup battery in a Dell PowerScale node, it is mandatory to replace the M.2 card at the same time. The M.2 card, which acts as a boot device and stores critical system information, works in conjunction with the backup battery to ensure data integrity.

Role of the Backup Battery:

Data Protection:

Provides power to preserve data in cache during a power loss.

Supports NVRAM Operations:

Ensures that any unwritten data is safely stored until power is restored.

Importance of the M.2 Card:

Boot Device:

Contains the OneFS operating system boot partition.

Data Logging:

Stores logs and system configuration data.

Simultaneous Replacement Requirement:

Interdependent Components:

The backup battery and M.2 card are designed to work together.

Preventive Maintenance:

Replacing both reduces the risk of future failures.

Firmware Compatibility:

Ensures both components are updated and compatible.

Procedure:

Shut Down the Node:

Safely power down the node before replacement.

Replace Both Components:

Remove the old backup battery and M.2 card.

Install the new components.

Reboot and Verify:

Power on the node and confirm normal operation.

Why Other Options Are Incorrect:

B. Both NIC cards:

NICs do not need to be replaced when replacing the backup battery.

C. Riser card:

The riser card is unrelated to the backup battery and does not require replacement in this context.

Dell PowerScale

Reference: Dell EMC PowerScale Field Replacement Unit (FRU) Procedure Guide: Specifies that the backup battery and M.2 card must be replaced together. Maintenance Best Practices:

Emphasize the importance of replacing interdependent components.

Hardware Owner’s Manual:

Provides step-by-step instructions for replacing the backup battery and M.2 card.