IBM Storwize V7000, Problem Determination Manual

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Even though many of these procedures are hot-swappable, these procedures are
intended to be used only when your system is not up and running and performing
I/O operations. Unless your system is offline, go to the management GUI and
follow the fix procedures.
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.
Preparing to remove and replace parts
Before you remove and replace parts, you must be aware of all safety issues.
First, read the safety precautions in the . These guidelines help you safely work
with the Storwize V7000 Unified.
Replacing a node canister
This topic describes how to replace a node canister.
Attention: If your system is powered on and performing I/O operations, go to
the management GUI and follow the fix procedures. Performing the replacement
actions without the assistance of the fix procedures can result in loss of data or
access to data.
Be careful when you are replacing the hardware components that are located in the
back of the system that you do not inadvertently disturb or remove any cables that
you are not instructed to remove.
Attention: Do not replace one type of node canister with another type. For
example, do not replace a model 2076-112 node canister with a model 2076-312
node canister.
Be aware of the following canister LED states:
v
If both the power LED and system status LED are on, do not remove a node
canister unless directed to do so by a service procedure.
v
If the system status is off, it is acceptable to remove a node canister. However,
do not remove a node canister unless directed to do so by a service procedure.
v
If the power LED is flashing or off, it is safe to remove a node canister.
However, do not remove a node canister unless directed to do so by a service
procedure.
Attention: Even if a node canister is powered off, it is still possible to lose data.
Do not remove a node canister unless directed to do so by a service procedure.
To replace the node canister, perform the following steps:
1. Read the safety information to which “Preparing to remove and replace parts”
refers.
2.
Confirm that you know which canister to replace. Go to “Procedure:
Identifying which enclosure or canister to service” on page 196.
Chapter 5. Control enclosure
209