Set Dust Filter Measurement - Lenovo ThinkEdge SE455 V3 User Manual

• Generate key randomly: A Random SED AK will be generated.
3. Press Apply button.
Attention:
• Once SED encryptoin is Enabled, it cannot be changed back to Disabled.
• When SED encryption is enabled, it is necessary to power cycle the system after installing an SED; without
power cycling, the SED will not be recognized by the host OS.
Change the SED AK
• Generate key using Passphrase: Set the password and re-enter it for the confirmation. Click Re-
generate to get the new SED AK.
• 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+.

Set dust filter measurement

With air flow sensor board installed, SE455 V3 BMC supports dust filter measurement to check the status of
the dust filter.
Log in to Lenovo XClarity Controller web interface, and go to Utilization ➙ Fan Speed (RPM) ➙ Dust Filter
Measurement to take the measurement by selecting Run immediately (once), or by setting a regular
schedule.
Note: When taking the measurement, the fans will operate at full fan speed for about 30 seconds.
258 ThinkEdge SE455 V3 User Guide