Memory Device

Use this window to view information for a particular memory device.

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Status OK, Critical, or Noncritical performance of the connector or slot for a memory module.
Device Name The alphanumeric text that uniquely identifies each memory slot, whether occupied or unoccupied.
Size Capacity of the memory slot that is expressed in MB or GB.
Type Synchronous dynamic random access memory (SDRAM) chip sets operate fast enough to synchronize with the CPU clock, eliminating wait states. The SDRAM chip set has two cell blocks, allowing more efficient data access. In dynamic random access memory (DRAM) each bit of storage is built from a single transistor and capacitor, allowing more memory bits to fit in the same chip area. However, DRAM has to be refreshed because the charge on the capacitor, which represents the stored bit value, decays with time. During a refresh, the memory module must read every bit and write it back at full strength.
Speed The rate at which the memory module reads the contiguous characters in a data word. It is measured in nanoseconds/MegaTransfers per second (MT/s). The standard rate for SDRAM is 10 ns (100 MT/s).
Rank Displays the rank of the Dual Inline Memory Module (DIMM). A rank is a row of dynamic random access memory (DRAM) devices consisting of 64 bits of data per DIMM. For example, Dual rank represents two rows of DRAM consisting of 64 bits of data each.
Failures If the value is other than None, one or more of the following strings is displayed:
  • Single bit warning error rate exceeded
  • Single bit failure error rate exceeded
  • Multi bit error encountered
  • Single bit error login disabled
  • DIMM disabled by way of spare memory activation
  • Non-Volatile Memory (NVM) Lifetime less than Five Percent
  • NVDIMM Not Ready
  • NVDIMM Save Error
  • NVDIMM Restore Error or Restore Timeout
  • Illegal NVDIMM Configuration
  • NVDIMM Not Responding
  • NVDIMM Arm Failure or Arm Timeout
  • All NVDIMMs in Write-Protect Mode
  • Non-Volatile Memory (NVM) Lifetime Expired
  • NVDIMM Persistency Lost
  • NVDIMM Persistency Restored
Technology This attribute defines the memory technology type for the memory device. Possible values are:
Table 1. Technology value
Value Technology
01h Other
02h Unknown
03h DRAM
04h NVDIMM-N
05h NVDIMM-F
06h NVDIMM-P
07h Intel persistent memory
Volatile Size Size of the Volatile portion of the memory device in Mega-Bytes (MB).
Non-Volatile Size Size of the Non-volatile portion of the memory device in Mega-Bytes (MB).
Cache Size Size of the Cache portion of the memory device in Mega-Bytes (MB).
Remaining Rated Write Endurance This property displays the percent of remaining life for the device in Percentage.
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