IBM Storwize V7000 Unified Problem Determination Manual page 78

About this task
Some field replaceable units (FRUs) are redundant and hot swappable, such as
power supplies. When replacing a hot-swap FRU, you have the option of leaving
the file module turned on and the power cables connected. Always follow the
remove and replace procedure for the FRU. The procedure for the FRU indicates
whether the FRU is hot swappable.
If the removal and replacement procedure does not indicate whether the FRU is
hot swappable, assume that it is not. In that case use the file module-removal
procedure that requires you to disconnect the power cords.
Note: Before removing an file module, you must suspend the file module.
Procedure
v Remove a file module from the system to replace a hot swappable FRU, as
v Remove a file module from the system, turn off the node, and disconnect the
Removing a file module and disconnecting power
You must remove an IBM Storwize V7000 file module from the file cluster and
disconnect it from its power line cords before performing a maintenance action
that requires the file module to have no power.
About this task
To identify and perform a service action on any file module that requires you to
turn off the power before performing the service action, perform the following
procedure.
Procedure
58
Storwize V7000 Unified: Problem Determination Guide 2073-720
described in "Removing a file module without disconnecting power" on page
59.
power cords, as described in "Removing a file module and disconnecting
power."
1. Access and log in to the Storwize V7000 Unified system from the
command-line interface.
2. Suspend the file module. Use the suspendnode command on one of the file
modules that you need to maintain, as shown in the following examples, to
stop a file module from providing the services.
v
suspendnode mgmt001st001
v
suspendnode mgmt002st001
A suspended file module does not participate in the cluster and does not host
any records for the clustered trivial database (CTDB). The IP addresses of a
file module are taken over by the other file module and no services are
lost.You can review the status of the file module by using the lsnode
command with the -r option. Review the row for the file module that was
suspended and the column for the Connection Status.
3. Use the stopcluster command to remove the file module from the system and
shut down the file module.
If you are shutting down the mgmt001st001 file module, for example, issue
the following command:
stopcluster -n mgmt001st001
4. After the file module shuts down and the power indicator light on the front of
the file module is flashing slowly, pull the file module out on its rails.