The Memory Information page displays a summary of the system memory. When server power is off, AMP data is unavailable, and only memory modules present at POST are displayed.
If the server is powered off, the system health information on this page is current as of the last power off. Health information is updated only when the server is powered on and POST is complete.
- AMP Mode Status
The status of the AMP subsystem.
Other/Unknown—The system does not support AMP, or the management software cannot determine the status.
Not Protected—The system supports AMP, but the feature is disabled.
Protected—The system supports AMP. The feature is enabled but not engaged.
Degraded—The system was protected, but AMP is engaged. Therefore, AMP is no longer available.
DIMM ECC—The system is protected by DIMM ECC only.
Mirroring—The system is protected by AMP in the mirrored mode. No DIMM faults have been detected.
Degraded Mirroring—The system is protected by AMP in the mirrored mode. One or more DIMM faults have been detected.
On-line Spare—The system is protected by AMP in the hot spare mode. No DIMM faults have been detected.
Degraded On-line Spare—The system is protected by AMP in the hot spare mode. One or more DIMM faults have been detected.
RAID-XOR—The system is protected by AMP in the XOR memory mode. No DIMM faults have been detected.
Degraded RAID-XOR—The system is protected by AMP in the XOR memory mode. One or more DIMM faults have been detected.
Advanced ECC—The system is protected by AMP in the Advanced ECC mode.
Degraded Advanced ECC—The system is protected by AMP in the Advanced ECC mode. One or more DIMM faults have been detected.
LockStep—The system is protected by AMP in the LockStep mode.
Degraded LockStep—The system is protected by AMP in the LockStep mode. One or more DIMM faults have been detected.
A3DC—The system is protected by AMP in the A3DC mode.
Degraded A3DC—The system is protected by AMP in the A3DC mode. One or more DIMM faults have been detected.
- Configured AMP Mode
The active AMP mode. The following modes are supported:
None/Unknown—The management software cannot determine the AMP fault tolerance, or the system is not configured for AMP.
On-line Spare—A single spare bank of memory is set aside at boot time. If enough ECC errors occur, the spare memory is activated and the memory that is experiencing the errors is disabled.
Mirroring—The system is configured for mirrored memory protection. All memory banks are duplicated in mirrored memory, as opposed to only one for online spare memory. If enough ECC errors occur, the spare memory is activated and the memory that is experiencing the errors is disabled.
RAID-XOR—The system is configured for AMP with the XOR engine.
Advanced ECC—The system is configured for AMP with the Advanced ECC engine.
LockStep—The system is configured for AMP with the LockStep engine.
Online Spare (Rank Sparing)—The system is configured for Online Spare Rank AMP.
Online Spare (Channel Sparing)—The system is configured for Online Spare Channel AMP.
Intersocket Mirroring—The system is configured for mirrored intersocket AMP between the memory of two processors or boards.
Intrasocket Mirroring—The system is configured for mirrored intrasocket AMP between the memory of a single processor or board.
A3DC—The system is configured for AMP with the A3DC engine.
- Supported AMP Modes
RAID-XOR—The system can be configured for AMP using the XOR engine.
Dual Board Mirroring—The system can be configured for mirrored advanced memory protection in a dual memory board configuration. The mirrored memory can be swapped with memory on the same memory board or with memory on the second memory board.
Single Board Mirroring—The system can be configured for mirrored advanced memory protection in a single memory board.
Advanced ECC—The system can be configured for Advanced ECC.
Mirroring—The system can be configured for mirrored AMP.
On-line Spare—The system can be configured for online spare AMP.
LockStep—The system can be configured for LockStep AMP.
Online Spare (Rank Sparing)—The system can be configured for Online Spare Rank AMP.
Online Spare (Channel Sparing)—The system can be configured for Online Spare Channel AMP.
Intersocket Mirroring—The system can be configured for mirrored intersocket AMP between the memory of two processors or boards.
Intrasocket Mirroring—The system can be configured for mirrored intrasocket AMP between the memory of a single processor or board.
A3DC—The system can be configured for A3DC AMP.
None—The system cannot be configured for AMP.
The Memory Summary section shows a summary of the memory that was installed and operational at POST.
- Location
The slot or processor on which the memory board, cartridge, or riser is installed. Possible values follow:
System Board—There is no separate memory board slot. All DIMMs are installed on the motherboard.
Board <Number>—There is a memory board slot available. All DIMMs are installed on the memory board.
Processor <Number>—The processor on which the memory DIMMs are installed.
Riser <Number>—The riser on which the memory DIMMs are installed.
- Total Memory Slots
The number of memory module slots.
- Total Memory
The capacity of the memory, including memory recognized by the operating system and memory used for spare, mirrored, or XOR configurations.
- Operating Frequency
The frequency at which the memory operates.
The Physical Memory Details section shows the physical memory modules on the host that were installed and operational at POST. Unpopulated module positions are also listed. Various resilient memory configurations can change the actual memory inventory from what was sampled at POST. In systems that have a high number of memory modules, all module positions might not be listed.
- Socket Locator
The slot or processor on which the memory module is installed.
- Status
The memory module status and whether the module is in use. Possible values follow:
Added But Unused—The DIMM was added and it is unused.
Configuration Error—There is a configuration error in the DIMM.
Degraded—The DIMM status is degraded.
Does Not Match—The DIMM type does not match.
Expected but Missing—The DIMM is expected, but it is missing.
Good, In Use—The DIMM is functioning properly and it is in use.
Good, Partially in Use—The DIMM is functioning properly and it is partially in use.
Map Out Error—The DIMM is mapped out because of a training failure.
Map Out Configuration—The DIMM is mapped out because of a configuration error.
Not Present—The DIMM is not present.
Not Supported—The DIMM is not supported.
Other—The DIMM status does not fit any of the standard status definitions.
Present, Spare—The DIMM is present and it is used as a spare.
Present, Unused—The DIMM is present and it is unused.
Unknown—The DIMM status is unknown.
Upgraded but Unused—The DIMM was upgraded and it is unused.
- Size
The memory module size.
- Max Supported Frequency
The maximum frequency supported by the memory module.
- Technology
The memory module technology. Possible values follow:
Unknown—Memory technology cannot be determined.
N/A—Memory module not present.
SDRAM (Synchronous DRAM)
RDIMM (Registered memory module)
UDIMM (Unregistered memory module)
LRDIMM (Load-reduced memory module)
NVDIMM (Non-volatile dual-inline memory module)
NVDIMM-N (Non-volatile dual-inline memory module with both flash memory and traditional memory)
R-NVDIMM (Registered non-volatile dual-inline memory module)
PMM (Persistent memory module)
Memory Details pane (physical memory)
- Manufacturer
The memory module manufacturer.
- Part Number
The memory module part number.
This value is displayed only for HPE memory modules.
- Serial Number
The memory module serial number.
This value is not displayed for empty memory slots.
- Type
The type of memory installed. Possible values follow:
Other—Memory type cannot be determined.
Board—Memory module is permanently mounted (not modular) on a system board or memory expansion board.
DDR4
N/A—Memory module is not present.
- Ranks
The number of ranks in the memory module.
- Error Correction
The type of error correction used by the memory module.
- Data Width Bits
The memory module data width in bits.
- Bus Width Bits
The memory module bus width in bits.
- Channel
The channel number in which the memory module is connected.
- Memory Controller
The memory controller number.
- CPU Socket
The memory module socket number.
- Memory Slot
The memory module slot number.
- State
The memory state.
- Vendor
The memory vendor name. If the vendor name is not available, the value N/A is displayed.
- Vendor ID
The memory vendor ID.
- Armed
The current backup-ready status of the NVDIMM-N, if available.
- Last Operation
The status of the last operation (NVDIMMs only).
- Media Life
The percentage of media life left (NVDIMMs only).
