What Does the "Energy Pack" Intel® RAID Controller Error Message Mean?
Content Type: Error Messages | Article ID: 000058199 | Last Reviewed: 11/05/2026
The RAID Web Console displays the following red-background error message: "Energy pack has failed and cannot support data retention / Replace the Energy pack". This message indicates that the Energy Pack (also referred to as the Intel® RAID Maintenance Free Backup Unit or MFBU) has failed and can no longer protect cached data in the event of a power loss.
After updating the firmware, restart the RAID Web Console and verify whether the error message is still displayed before proceeding to hardware replacement.