Owners Manual

General safety precautions

To avoid injury and damage to an enclosure, always follow general safety precautions.

WARNING: Do not lift the enclosure without any assistance. If installed above the lower 20U of a rack, a customer‐provided

mechanical lift must be used to avoid injury.

• Keep the area clean and free of clutter around the chassis.

• While working on the enclosure, do not wear loose clothing, such as neckties and unbuttoned shirt sleeves, which can come into

contact with electrical circuits or be pulled into a cooling fan.

• Remove any jewelry or metal objects from your body because they are excellent electricity conductors that can create short circuits

and harm you if they come into contact with printed circuit boards (PCBs) or areas where power is available.

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.

Electrostatic discharge precautions

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

ESD is generated by two objects with dierent electrical charges coming into contact with each other. The resulting electrical discharge

can damage electronic components and PCBs.

• Dell EMC 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 o.

Turning o the EMMs and enclosure

About this task

To turn o the EMMs and enclosure, complete the following tasks:

Steps

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

2 Stop I/O to the storage enclosure.

3 Turn o 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 EMC 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.

Installing and removing system components