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Recover the SED AK
• Recover SED AK using Passphrase: Use the password that was set in Generate key using Passphrase
to recover the SED AK.
• Recover SED AK from Backup file: Upload the backup file generated in Backup the SED AK mode and
enter the corresponding backup file password to recover the SED AK.
• Recover SED AK from Automatic backup: After system board replacement, use automatic backup to
recover the SED AK for the installed SED.
Note: To recover the SED AK from automatic backup, the role of XCC user should be Administrator+.
Remove the system board
Follow instructions in this section to remove the system board.
About this task
Important:
• Removing and installing this component requires trained technicians. Do not attempt to remove or install
it without proper training.
• When replacing the system board, always update the server with the latest firmware or restore the pre-
existing firmware. Make sure that you have the latest firmware or a copy of the pre-existing firmware
before you proceed.
• When removing the memory modules, label the slot number on each memory module, remove all the
memory modules from the system board, and set them aside on a static-protective surface for
reinstallation.
• When disconnecting cables, make a list of each cable and record the connectors the cable is
connected to, and use the record as a cabling checklist after installing the new system board.
Attention:
• Read
"Installation Guidelines" on page 47
work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
"Power off the server" on page
• If the node is installed in an enclosure or mounted, remove the node from the enclosure or mount. See
"Configuration guide" on page
Procedure
Step 1.
Make preparation for this task.
a.
Record all system configuration information, such as Lenovo XClarity Controller IP addresses,
vital product data, and the machine type, model number, serial number, Universally Unique
Identifier, and asset tag of the server.
b.
If SED encryption is enabled, maintain a backup of SED AK. See
Drive Authentication Key (SED AK) " on page
c.
If applicable, export Lenovo Features on Demand activation key. See the "License
Management" section in the XCC documentation compatible with the server at
pubs.lenovo.com/lxcc-overview/
d.
Save the system configuration to an external device with Lenovo XClarity Essentials.
e.
Save the system event log to external media.
and
"Safety inspection checklist" on page 48
54.
54.
.
"Manage the Self Encryption
272.
.
Chapter 5
Hardware replacement procedures
to ensure that you
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Troubleshooting
