Lenovo ThinkEdge SE455 V3 User Manual page 220

• Generate key randomly: Click Re-generate to get a Random SED AK.
Backup the SED AK
Set the password and re-enter it for the confirmation. Click Start Backup to backup the SED AK; then,
download the SED AK file and store it safely for future use.
Note: If you use the backup SED AK file to restore a configuration, the system will ask for the password that
you set here.
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.
S002
CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
S012
CAUTION:
Hot surface nearby.
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.
212 ThinkEdge SE455 V3 User Guide