IBM Storwize V7000 Unified Problem Determination Manual page 79

Note: Label and disconnect both power cords and all external cables from the
file module.
5. Remove the file module from the rack if necessary, or locate and use the
service ladder, if necessary, to perform the maintenance action on the file
module when it is fully extended from the rack.
6. Locate and perform the correct removal and replacement procedure.
Attention: You can replace only one of the disk drives in the file module. If
you must replace both disk drives, contact IBM Remote Technical Support.
7. After replacing the failing part and replacing the file module cover, replace the
file module in the rack, if necessary, and reconnect the power cords.
After reconnecting the power cords, the power indicator LED on the front of
the file module begins to flash quickly.
8. Push the file module back into the rack.
9. After the power indicator LED on the front of the file module begins to flash
slowly, press the power switch that surrounds the indicator light to turn on
the file module.
As the file module reboots, the Storwize V7000 Unified system reintegrates it
back into the cluster.
10. After the file module is fully booted back into the system, resume the file
module using the resumenode command that was previously suspended and
shutdown.
Removing a file module without disconnecting power
You can work on an IBM Storwize V7000 Unified file module to perform a
maintenance action that does not require you to remove its power cords.
About this task
Perform the following procedure to remove and replace a hot swappable field
replaceable unit (FRU) in a file module when you do not have to remove the file
module from the rack to work on it.
Procedure
1. Access and log in to the Storwize V7000 Unified system from the
command-line interface.
2. Issue the suspendnode command to remove the file module from the system so
that you can work on it.
To remove the mgmt001st001 file module from the system, for example, issue
the following command:
# suspendnode mgmt001st001
3. Wait for the Storwize V7000 Unified system to stop the file module at the
clustered trivial database (CTDB) level. The command does not unmount any
mounted file systems.
A stopped file module does not participate in the cluster and does not host any
records for the clustered trivial database. The IP address of an file module is
taken over by another file module and no services are hosted.
You can issue the lsnode -r command to view the state of the file module.
The results from running the lsnode -r command are similar to the following
example:
# lsnode -r
Hostname IP
mgmt001st001 10.254.8.2
Description Role
active management node management,interface,storage
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Chapter 4. File module