HP StorageWorks MSA 2/8 HP StorageWorks MIB V3.1.x/4.1.x Reference Guide (AA-R - Page 178

Entity MIB Objects Description This object is a user-assigned asset tracking identifier for the physical entity as specified by a network manager, and provides non-volatile storage of this information. On the first instantiation of a physical entity, the value of entPhysicalAssetID associated with that entity is set to the zero-length string. Not every physical component will have an asset tracking identifier, or even need one. Physical entities for which the associated value of the entPhysicalIsFRU object is equal to "false(2)" (for example, the repeater ports within a repeater module) do not need their own unique asset tracking identifier. An agent does not have to provide write access for such entities, and may instead return a zero-length string. If write access is implemented for an instance of entPhysicalAssetID, and a value is written into the instance, the agent must retain the supplied value in the entPhysicalAssetID instance associated with the same physical entity for as long as that entity remains instantiated. This includes instantiations across all re-initializations/reboots of the network management system, including those that result in a change of the physical entity's entPhysicalIndex value. If no asset tracking information is associated with the physical component, then this object will contain a zero-length string. entPhysicalIsFRU OID Status Description 1.3.6.1.2.1.47.1.1.1.1.16 Current The entPhysicalIsFRU object indicates whether this physical entity is considered a field replaceable unit by the vendor. If this object contains the value "true(1)," then this entPhysicalEntry identifies a field replaceable unit. For all entPhysicalEntries representing components that are permanently contained within a field replaceable unit, the value "false(2)" should be returned for this object. 178 MIB Version 3.1.x/4.1.x Reference Guide