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AFF A300 - Replacing the controller module.pdf
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AFF A300 - Replacing the controller module.pdf
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AFF A300 systems
Replacing the controller module
April 2021 | 215-11088_2021-04_en-us
doccomments@netapp.com
Contents
Replacing the controller module.....................................................................................3
Shutting down the impaired controller........................................................................................................................... 4
Shutting down the node...................................................................................................................................... 4
Shutting down a node in a two-node MetroCluster configuration......................................................................5
Replacing the controller module hardware.....................................................................................................................7
Opening the controller module...........................................................................................................................7
Moving the boot device...................................................................................................................................... 8
Moving the NVMEM battery............................................................................................................................. 9
Moving the DIMMs..........................................................................................................................................11
Moving a PCIe card..........................................................................................................................................12
Installing the controller.....................................................................................................................................14
Restoring and verifying the system configuration........................................................................................................15
Verifying and setting the HA state of the controller module............................................................................16
Running system-level diagnostics.................................................................................................................... 17
Completing system restoration..................................................................................................................................... 20
Recabling the system........................................................................................................................................21
Reassigning disks..............................................................................................................................................22
Installing licenses for the replacement node in ONTAP...................................................................................27
Restoring Storage and Volume Encryption functionality.................................................................................28
Verifying LIFs and registering the serial number.............................................................................................28
Switching back aggregates in a two-node MetroCluster configuration............................................................28
Completing the replacement process............................................................................................................................29
Copyright, trademark, and machine translation........................................................30
Copyright......................................................................................................................................................................30
Trademark.....................................................................................................................................................................30
Machine translation...................................................................................................................................................... 30
AFF A300 systems: Replacing the controller module ii
Contents
Replacing the controller module
You must review the prerequisites for the replacement procedure and select the correct one for
your version of the ONTAP operating system.
Before you begin
• All drive shelves must be working properly.
• If your system is in an HA pair, the healthy node must be able to take over the node that is
being replaced (referred to in this procedure as the "impaired node").
• If your system is in a MetroCluster configuration, you must review the section
Choosing the
correct recovery procedure
to determine whether you should use this procedure.
If this is the procedure you should use, note that the controller replacement procedure for a
node in a four or eight node MetroCluster configuration is the same as that in an HA pair. No
MetroCluster-specific steps are required because the failure is restricted to an HA pair and
storage failover commands can be used to provide nondisruptive operation during the
replacement.
About this task
• This procedure includes steps for automatically or manually reassigning drives to the
replacement
node, depending on your system's configuration.
You should perform the drive reassignment as directed in the procedure.
• You must replace the failed component with a replacement FRU component you received from
your provider.
• You must be replacing a controller module with a controller module of the same model type.
You cannot upgrade your system by just replacing the controller module.
• You cannot change any drives or drive shelves as part of this procedure.
• In this procedure, the boot device is moved from the impaired node to the replacement node so
that the replacement node will boot up in the same version of ONTAP as the old controller
module.
• Any PCIe cards moved from the old controller module to the new controller module or added
from existing customer site inventory must be supported by the replacement controller module.
NetApp Hardware Universe
• It is important that you apply the commands in these steps on the correct systems:
◦ The
impaired
node is the node that is being replaced.
◦ The
replacement
node is the new node that is replacing the impaired node.
◦ The
healthy
node is the surviving node.
• You must always capture the node's console output to a text file.
This provides you a record of the procedure so that you can troubleshoot any issues that you
might encounter during the replacement process.
Related information
NetApp Knowledgebase Answer 1001614: What are the specific steps involved in FlexArray for
NetApp controller upgrades/replacements?
Steps
1.
Shutting down the impaired controller
on page 4
2.
Replacing the controller module hardware
on page 7
3.
Restoring and verifying the system configuration
on page 15
4.
Completing system restoration
on page 20
5.
Completing the replacement process
on page 29
AFF A300 systems: Replacing the controller module 3
Replacing the controller module
Shutting down the impaired controller
You can shut down or take over the impaired controller using different procedures, depending on
the storage system hardware configuration.
Shutting down the node
To shut down the impaired node, you must determine the status of the node and, if necessary, take
over the node so that the healthy node continues to serve data from the impaired node storage.
Before you begin
• If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in
quorum or a healthy node shows
false
for eligibility and health, you must correct the issue
before shutting down the impaired node.
ONTAP 9 System Administration Reference
• If you are using NetApp Storage Encryption, you must have reset the MSID using the
instructions in the "Returning SEDs to unprotected mode" section of the
ONTAP 9 NetApp
Encryption Power Guide
.
ONTAP 9 NetApp Encryption Power Guide
• If you have a SAN system, you must have checked event messages (event log show) for
impaired node SCSI blade.
Each SCSI-blade process should be in quorum with the other nodes in the cluster. Any issues
must be resolved before you proceed with the replacement.
• If you have a MetroCluster configuration, you must have confirmed that the MetroCluster
Configuration State is configured and that the nodes are in an enabled and normal state
(metrocluster node show).
Steps
1. If the impaired node is part of an HA pair, disable automatic giveback from the console of the
healthy node:
storage failover modify -node local -auto-giveback false
2. Take the impaired node to the LOADER prompt:
If the impaired node is displaying...
Then...
The LOADER prompt Go to the next step.
Waiting for giveback... Press Ctrl-C, and then
respond y when
prompted.
AFF A300 systems: Replacing the controller module 4
Replacing the controller module
If the impaired node is displaying... Then...
System prompt or password prompt (enter system password) Take over or halt the
impaired node:
• For an HA pair, take
over the impaired
node from the healthy
node:
storage
failover
takeover -
ofnode
impaired_node_n
ame
When the impaired
node shows Waiting
for giveback...,
press Ctrl-C, and then
respond y.
3.
If the system has only one controller module in the chassis, turn off the power supplies, and
then unplug the impaired node's power cords from the power source.
Shutting down a node in a two-node MetroCluster configuration
To shut down the impaired node, you must determine the status of the node and, if necessary,
switch over the node so that the healthy node continues to serve data from the impaired node
storage.
Before you begin
• If you are using NetApp Storage Encryption, you must have reset the MSID using the
instructions in the "Returning SEDs to unprotected mode" section of the ONTAP 9 NetApp
Encryption Power Guide.
ONTAP 9 NetApp Encryption Power Guide
About this task
• You must leave the power supplies turned on at the end of this procedure to provide power to
the healthy node.
Steps
1. Check the MetroCluster status to determine whether the impaired node has automatically
switched over to the healthy node:
metrocluster show
2. Depending on whether an automatic switchover has occurred, proceed according to the
following table:
If the impaired node...
Then...
Has automatically switched over Proceed to the next step.
Has not automatically switched
over
Perform a planned switchover operation from the healthy node:
metrocluster switchover
AFF A300 systems: Replacing the controller module 5
Replacing the controller module
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