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An HPE MR Gen10 Plus or Gen11 Controller will send a "PCI Slot: x Controller reboot required. Reason:" message if a system is running for a long time (more than 242 days) without a DC power-cycle (power off, then power on). This message will be in the Windows event log.Example in the Windows event log:Warning [date] LSA_MONITOR 550 -3 SAS_ADDR: 0x500062b20c954f40 PCI Slot: 1 Controller reboot required. Reason: .
This advisory applies to HPE ProLiant servers using the following HPE MR Gen10 Plus and Gen11 controllers:HPE MR Gen10 Plus ControllersHPE MR416i-a Gen10 Plus x16 Lanes 4GB Cache NVMe/SAS 12G Controller P26279-B21HPE MR416i-p Gen10 Plus x16 Lanes 4GB Cache NVMe/SAS 12G Controller P06367-B21HPE MR Gen11 ControllersHPE MR416i-o Gen11 x16 Lanes 8GB Cache OCP SPDM Storage Controller P47781-B21HPE MR416i-p Gen11 x16 Lanes 8GB Cache PCI SPDM Plug-in Storage Controller P47777-B21
The firmware has a method for the NVRAM to update automatically, so there is no need to reboot in any of the firmware versions. The message can be safely ignored.This issue has been fixed in HPE MR controller firmware version 52.30.3-5917.Revision HistoryDocument VersionRelease DateDetails3July 9, 2025Updated the second paragraph in the Resolution section with HPE MR controller firmware version 52.30.3-5917, which contains the fix2June 5, 2024Deleted the NOTE to refresh controllers in the Resolution section because it did not apply.1May 28, 2024Original Document Release
Operating Systems Affected:Not Applicable
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