IBM-SYSTEM-MEMORY-MIB

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Category: Domain: Server Hardware, Vendor: IBM

Description: IBM MIB for monitoring memory subsystem configuration and error statistics on IBM server systems.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is IBM-SYSTEM-MEMORY-MIB?

This IBM-proprietary MIB, part of the same IBM System hardware family, monitors the physical memory subsystem of IBM servers. It exposes a physical memory table describing each installed memory module's active state, error condition, power state, form factor, data/total width, and memory type/type detail. It is a hardware status and inventory MIB: it lets an operator see whether a memory module is powered on and functioning, whether it has reported an error, and its detailed physical characteristics. There is no apparent dependency on standard IETF MIBs; it is IBM proprietary and typically paired with the LMSENSOR and CPU MIBs from the same family for full server hardware health monitoring. It is commonly deployed alongside IBM's systems-management agent on Power/System x rack servers to detect failing or degraded memory modules before they cause a system crash. Engineers can download the IBM-SYSTEM-MEMORY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in IBM-SYSTEM-MEMORY-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

IBM System x / Power series rack or blade server

Monitoring Examples

A monitoring script walks ibmSystemPhysicalMemoryTable keyed on ibmSystemPhysicalMemoryKeyIndex and checks ibmSystemPhysicalMemoryHasError for each module entry, flagging any that report an error. It cross-checks ibmSystemPhysicalMemoryIsActive and ibmSystemPhysicalMemoryPoweredOn to confirm all expected modules are online after a reboot, and inspects ibmSystemPhysicalMemoryMemoryType/ibmSystemPhysicalMemoryTypeDetail along with ibmSystemPhysicalMemoryTotalWidth/DataWidth to validate that a replacement module matches the server's supported memory configuration.

What Can Be Monitored

per-module active/power state
per-module error status
memory module type and form factor
data width / total width
installed memory inventory

Imported Objects

From IBM-SYSTEM-MIB

Boolean
Datetime
Real32
Real64
Sint16
Sint32
Sint64
Sint8
String
Uint16
Uint32
Uint64
Uint8
ibmSystemMemory	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
ibmSystemPhysicalMemoryTable	1.3.6.1.4.1.2.6.159.1.1.120.1		not-accessible	The IBMPSG_PhysicalMemory class represents an IBM managed Memory Array.
ibmSystemPhysicalMemoryEntry	1.3.6.1.4.1.2.6.159.1.1.120.1.1		not-accessible	This class defines an entry for each IBMPSG_PhysicalMemory instance. Each instance of the IBMPSG_PhysicalMemory class contains status and descriptive information for each memory bank recognized by the operating system.
STR ibmSystemPhysicalMemoryKeyIndex	1.3.6.1.4.1.2.6.159.1.1.120.1.1.1	String	read-only	The index used by this table.
BOO ibmSystemPhysicalMemoryIsActive	1.3.6.1.4.1.2.6.159.1.1.120.1.1.2	Boolean	read-only	Indicates whether memory is active 1 - is active 0 - is not active.
BOO ibmSystemPhysicalMemoryHasError	1.3.6.1.4.1.2.6.159.1.1.120.1.1.3	Boolean	read-only	Indicates whether memory has error 1 - has error 0 - does not have error.
BOO ibmSystemPhysicalMemoryPoweredOn	1.3.6.1.4.1.2.6.159.1.1.120.1.1.4	Boolean	read-only	Indicates whether memory is powered on 1 - powered on 0 - powered off.
NUM ibmSystemPhysicalMemoryTotalWidth	1.3.6.1.4.1.2.6.159.1.1.120.1.1.5	Uint16	read-only	Total width, in bits, of the PhysicalMemory, including check or error correction bits. If there are no error correction bits, the value in this property should match that specified for DataWidth.
NUM ibmSystemPhysicalMemoryDataWidth	1.3.6.1.4.1.2.6.159.1.1.120.1.1.6	Uint16	read-only	Data width of the PhysicalMemory, in bits. A data width of 0 and a TotalWidth of 8 would indicate that the Memory is solely used to provide error correction bits.
NUM ibmSystemPhysicalMemoryFormFactor	1.3.6.1.4.1.2.6.159.1.1.120.1.1.7	Uint16	read-only	Refers to the physical packaging of the memory examples - DIMM,SIMM,Chip.
NUM ibmSystemPhysicalMemoryMemoryType	1.3.6.1.4.1.2.6.159.1.1.120.1.1.8	Uint16	read-only	The type of PhysicalMemory.
NUM ibmSystemPhysicalMemoryTypeDetail	1.3.6.1.4.1.2.6.159.1.1.120.1.1.9	Uint16	read-only	Further Details about memory type examples - Fast-paged,static column,window DRAM.
NUM ibmSystemPhysicalMemorySpeed	1.3.6.1.4.1.2.6.159.1.1.120.1.1.10	Uint32	read-only	The speed of the PhysicalMemory, in nanoseconds.
NUM ibmSystemPhysicalMemoryCapacity	1.3.6.1.4.1.2.6.159.1.1.120.1.1.11	Uint64	read-only	The total capacity of this PhysicalMemory, in bytes.
STR ibmSystemPhysicalMemoryBankLabel	1.3.6.1.4.1.2.6.159.1.1.120.1.1.12	String	read-only	A string identifying the physically labeled bank where the Memory is located - for example, 'Bank 0' or 'Bank A'.
STR ibmSystemPhysicalMemoryDeviceLocator	1.3.6.1.4.1.2.6.159.1.1.120.1.1.13	String	read-only	The physically labeled socket or board position where the memory device is located.
STR ibmSystemPhysicalMemoryManufacturer	1.3.6.1.4.1.2.6.159.1.1.120.1.1.14	String	read-only	The name of the organization responsible for producing this Memory.
STR ibmSystemPhysicalMemoryPartNumber	1.3.6.1.4.1.2.6.159.1.1.120.1.1.15	String	read-only	The part number for this memory device.
STR ibmSystemPhysicalMemorySerialNumber	1.3.6.1.4.1.2.6.159.1.1.120.1.1.16	String	read-only	A manufacturer-allocated number used to identify the Memory.
STR ibmSystemPhysicalMemoryStatus	1.3.6.1.4.1.2.6.159.1.1.120.1.1.17	String	read-only	The current Status of the Memory.

RFC description

IBM enterprise MIB defining managed objects for system memory monitoring including DIMM status, capacity, and ECC error counters.

Start monitoring IBM System x/Power series server (physical memory module status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download IBM-SYSTEM-MEMORY-MIB

What Is IBM-SYSTEM-MEMORY-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description