Before you can remove the NVMe backplane (BPN-NVME5-HS219N-S24) from the motherboard tray, what should you...

Before removing theNVMe backplanein aSupermicro MI300X GPU system,all NVMe drives must be disengaged but not fully removed.

Why is this necessary?

Ensures safe backplane removal

NVMe drives are directly connected to the backplane viaMCIO or U.2 connectors.

Keeping them engaged couldput stress on the connectors, causing damage.

Prevents accidental disconnects

Removing the drives completely isnot necessary, butdisengaging them ensures they do not obstruct removal.

Avoids power damage

If the drives remain engaged during backplane removal, they may still haveresidual power, which can causeconnector damage or electrical failure.

Why other options are incorrect?

B (Disengage PSUs)→ While power should be off,removing PSUs is not required for NVMe backplane removal.

C (Disengage fans)→ Fans are independent components anddo not interfere with the NVMe backplane.

D (Disengage the field engineer)→ Not a valid answer; field engineers are not system components.

Official Documentation Reference:

Supermicro NVMe Storage Disassembly Guiderecommendsdisengaging NVMe drives but not fully removing thembefore backplane removal.