Dell MD1280 Pre-replacement tasks, Replacing PSUs

CAUTION: If the enclosure system operates for too long (depending on altitude) with drive

drawers open, the enclosure can overheat, causing power failure and data loss. Such use may

invalidate the warranty.

To avoid injury and damage to the enclosure, always follow electrostatic discharge (ESD) precautions.

ESD is generated by two objects with different electrical charges coming into contact with each other.

The resulting electrical discharge can damage electronic components and PCBs.

• Dell recommends to always use an antistatic mat and antistatic wrist or ankle strap while working on

components in the interior of an enclosure.

• Observe all conventional ESD precautions when handling plug‐in modules and components.

• Avoid contact with backplane components and module connectors.

• When you are not using the components and PCBs, keep them in their antistatic bags.

Pre-replacement tasks

If the FRU is not hot‐swappable, the EMMs and enclosure must be turned off.

About this task

To turn off the EMMs and enclosure, complete the following tasks:

Steps

1. Before turning off the EMMs and enclosure, identify the failed devices.

2. Stop I/O to the storage enclosure.

3. Turn off the EMMs and PSUs in the enclosure using the power switches located on the

corresponding devices.

4. Disconnect power from the enclosure by removing the power cords from all the PSUs in the

enclosure.

Replacing PSUs

The Dell Storage MD1280 enclosure supports two 2.8kW AC hot‐swappable PSUs. If one PSU stops

functioning, the second PSU continues to supply power to the enclosure.

To identify a non-functioning PSU, use the secli component of the Storage Enclosure Management

Software or visually verify which PSU is not functioning. For more information on using the secli to

identify failed devices, see the Dell Storage MD1280 Administrator's Guide.

About this task

To replace failed PSUs, complete the following tasks: