Compute module mezzanine card options
System requests recovery method during mezzanine card replacement
Symptom
The system requests a recovery method during mezzanine card replacement on a BitLocker-encrypted
compute module.
Action
When replacing a mezzanine card on a BitLocker-encrypted compute module, always disable BitLocker
before replacing the expansion board. If BitLocker is not disabled, the system requests the recovery
method selected when BitLocker was configured. Failure to provide the correct recovery password or
passwords results in loss of access to all encrypted data.
Be sure to enable BitLocker after the installation is complete.
For information on BitLocker, see BitLocker for Servers on the Microsoft website.
Compute module controllers and energy packs
NOTE: System ROM and firmware messages might display "energy pack" in place of "Smart Storage
Battery." Energy pack refers to both, HPE Smart Storage Battery and the HPE Smart Storage Hybrid
Capacitor.
Network controller is installed but not working
Symptom
The network controller is not working.
Action
1. To see if any statuses indicate the source of the issue, check the network controller LEDs.
For LED information, see the network controller documentation or compute module documentation.
2. Be sure that no loose connections exist.
3. Be sure that the correct cable type is used for the network speed or that the correct SFP or DAC
cable is used.
For dual-port 10 GB network devices, both SFP ports should have the same media (for example,
DAC cable or equivalent SFP+ module). Mixing different types of SFP (SR/LR) on a single device is
not supported.
4. Be sure that the network cable is working by replacing it with a known functional cable.
5. Be sure that a software issue has not caused the failure.
For more information, see the operating system documentation.
6. Be sure the compute module and operating system support the controller.
For more information, see the product QuickSpecs Hewlett Packard Enterprise website (http://
www.hpe.com/info/qs).
7. Be sure that the controller is enabled in the UEFI System Utilities.
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