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Magician - SMART Info - NVME

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SMART Attributes for NVME

S.M.A.R.T. (technology for self-monitoring, analysis and reporting) uses a series of attributes to monitor the selected drive and analyzes its reliability.

Among all attributes, those defined by the manufacturer are not displayed in Magician. For more information about S.M.A.R.T. attributes, please refer to the NVMe specifications provided online.

Information displayed for each S.M.A.R.T. attribute is as follows:

  • Byte
    • ID defined by NVMe standards.
  • Description
    • Name of the S.M.A.R.T. attribute.
  • Raw value
    • Raw value specified in the S.M.A.R.T. attribute by the drive manufacturer

Below is information about some S.M.A.R.T. properties.

  • Critical Warning
    • This field indicates critical warnings for the state of the controller.
  • Temperature
    • Contains the temperature of the overall device (controller and NVM included) in units of Kelvin.
  • Available Spare
    • Contains a normalized percentage (0 to 100%) of the remaining spare capacity available.
  • Available Spare Threshold
    • value is indicated as a normalized percentage (0 to 100%).
  • Percentage Used
    • Contains a vendor specific estimate of the percentage of device life used based on the actual device usage and the manufacturer’s prediction of device life.
  • Data Units Read
    • Contains the number of 512 byte data units the host has read from the controller; this value does not include metadata. This value is reported in thousands (i.e., a value of 1 corresponds to 1000 units of 512 bytes read) and is rounded up.
  • Data Units Written
    • Contains the number of 512 byte data units the host has written to the controller; this value does not include metadata. This value is reported in thousands (i.e., a value of 1 corresponds to 1000 units of 512 bytes written) and is rounded up.
  • Host Read Commands
    • Contains the number of read commands completed by the controller.
  • Host Write Commands
    • Contains the number of write commands completed by the controller.
  • Controller Busy Time
    • Contains the amount of time the controller is busy with I/O commands.
  • Power Cycles
    • Contains the number of power cycles.
  • Power On Hours
    • Contains the number of power-on hours.
  • Unsafe Shutdowns
    • Contains the number of unsafe shutdowns.
  • Media Errors
    • Contains the number of occurrences where the controller detected an unrecovered data integrity error.
  • Number of Error Information Log Entries
    • Contains the number of Error Information log entries over the life of the controller.

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