Replacing parts

You can remove and replace customer-replaceable units (CRUs) in control enclosures or expansion enclosures.

Attention: Even though many of these components are hot-swappable, they are intended to be used only when your system is not active (no I/O operations). If your system is powered on and processing I/O operations, go to the management GUI and follow the fix procedures. Initiating the replacement actions without the assistance of the fix procedures can result in loss of data or loss of access to data.

Each replaceable unit has its own removal procedure. Sometimes you can find that a step within a procedure might refer you to a different remove and replace procedure. You might want to complete the new procedure before you continue with the first procedure that you started.

Remove or replace parts only when you are directed to do so.

After you carry out a part replacement under warranty, ensure compliance with any requirements to return parts. Follow all packaging instructions, and use all supplied packaging materials for shipping.

Preparing to remove and replace parts
Before you remove and replace parts, you must be aware of all safety issues.
Replacing a node canister
To replace a faulty node canister with a new one received from CRU or FRU stock, use this procedure. When replacing a node canister, aim to maximize drive and system availability by maintaining one online node in the control enclosure containing the faulty node canister. If you cannot maintain at least one node canister online in the system, then you might need to follow the system recovery procedure after replacing the faulty node canister.
Replacing an expansion canister
You can replace a faulty expansion canister with a new one received from CRU / FRU stock.
Replacing an SFP transceiver
When a failure occurs on an optical link, the SFP transceiver in the port that provides the link might need to be replaced. To replace a faulty SFP transceiverwith a new one received from CRU or FRU stock, use this procedure.
Replacing a power supply unit
You can replace either of the two hot-swap redundant power supplies in an enclosure. These redundant power supplies operate in parallel, one continuing to power the canister if the other fails.
Replacing the battery in a node canister
To replace a faulty battery with a new one received from CRU / FRU stock, use this procedure.
Replacing a CMOS battery
The complementary metal-oxide semiconductor (CMOS) battery is a coin-shaped power cell that is mounted inside a node canister. It is used to keep the system time when there is no power to the node canister. The lithium battery must be handled correctly to avoid possible danger. If you replace the battery, you must adhere to all safety instructions.
Replacing a 2.5 inch drive assembly
You can replace a faulty 2.5 inch drive assembly with a new one received from CRU / FRU stock.
Replacing a 3.5 inch drive assembly
You can replace a faulty 3.5 inch drive assembly with a new one received from CRU / FRU stock.
Replacing enclosure end caps
You can remove and replace enclosure end caps.
Replacing an expansion enclosure attachment SAS cable
To replace a faulty expansion enclosure attachment SAS cable with a new one received from CRU / FRU stock, use this procedure.
Replacing the support rails
You can replace faulty support rails with new ones received from customer-replaceable unit (CRU) or field-replaceable unit (FRU) stock.
Replacing a control enclosure midplane
A control enclosure midplane assembly must be replaced only by a trained service provider.
Replacing an expansion enclosure midplane
To replace a faulty expansion enclosure midplane assembly with a new one received from CRU / FRU stock, use this procedure.
Replacing the enclosure midplane of a powered off enclosure
You can replace the midplane of an enclosure that is currently not online to a system.
Replacing a node canister memory module
You can replace a faulty node canister memory module with a new one received from CRU / FRU stock.
Replacing a host interface adapter
To replace a faulty host interface adapter with a new one received from CRU / FRU stock, use this procedure.
Replacing host interface adapters in two control enclosures concurrently
It is possible to reconfigure one node canister of each control enclosure at the same time. During the procedure, both I/O groups (control enclosures) are online with no redundancy, but the total maintenance period is reduced.

Parent topic: Troubleshooting