Measures reported by VrtxMemDeviceTest

VRTX supports DDR3 unbuffered ECC DIMMs (UDIMM ECC) and registered DIMMs (RDIMMs).

DIMM or dual in-line memory module comprises a series of dynamic random-access memory integrated circuits. Registered (also called buffered) DIMMs have a register between the DRAM modules and the memory controller. They place less electrical load on the memory controller and allow single systems to remain stable with more memory modules than they would have otherwise. When compared with registered memory, conventional memory is usually referred to as unbuffered memory or unregistered memory (UDIMM). ECC DIMMs are those that have extra data bits which can be used by the memory controller to detect and correct errors.

A critical error in any of the DIMMs (registered/unregistered) can even render the VRTX unusable. It is therefore imperative that the state of each DIMM in the VRTX be closely tracked, and administrators warned of any impending danger to the health of the DIMM. This is where the VrtxMemDeviceTest test helps.

This test reports the current health of each DIMM, and in this way, alerts administrators to any abnormality related to a DIMM. The test also reports the size and speed configuration of every DIMM.

The measures made by this test are as follows: