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  2. Power-on hours - Wikipedia

    en.wikipedia.org/wiki/Power-On_Hours

    Power-on hours is intended to indicate a remaining lifetime prediction for hard drives and solid state drives, generally, "the total expected life-time of a hard disk is 5 years" [3] or 43,800 hours of constant use. [4] [5] Typically, after a disk reaches 5 years of power-on time, the disk is more likely to fail.

  3. Self-Monitoring, Analysis and Reporting Technology - Wikipedia

    en.wikipedia.org/wiki/Self-Monitoring,_Analysis...

    The disk drives would measure the disk's "health parameters", and the values would be transferred to the operating system and user-space monitoring software. Each disk drive vendor was free to decide which parameters were to be included for monitoring, and what their thresholds should be. The unification was at the protocol level with the host.

  4. Device configuration overlay - Wikipedia

    en.wikipedia.org/wiki/Device_configuration_overlay

    Device configuration overlay (DCO) is a hidden area on many of today's hard disk drives (HDDs). Usually when information is stored in either the DCO or host protected area (HPA), it is not accessible by the BIOS (or UEFI), OS, or the user. However, certain tools can be used to modify the HPA or DCO.

  5. Annualized failure rate - Wikipedia

    en.wikipedia.org/wiki/Annualized_failure_rate

    For example, AFR is used to characterize the reliability of hard disk drives.. The relationship between AFR and MTBF (in hours) is: [1] = (/) This equation assumes that the device or component is powered on for the full 8766 hours of a year, and gives the estimated fraction of an original sample of devices or components that will fail in one year, or, equivalently, 1 − AFR is the fraction of ...

  6. List of solid-state drive manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_solid-state_drive...

    Hikvision: China No No Yes No No HGST [10] (owned by Western Digital) United States and Japan Formerly, but now absorbed into its parent, Western Digital Formerly through Flash Forward, [5] a joint venture between Toshiba (now Kioxia) and its then-sister company, SanDisk Formerly, but now absorbed into its parent, Western Digital No No HyperOs ...

  7. Hard disk drive - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive

    A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

  8. DiskSpd - Wikipedia

    en.wikipedia.org/wiki/Diskspd

    The command supports physical and virtual storage including hard disk drive (HDD), solid state devices , and solid state hybrid drives . [5] It provides control over the testing methods, duration, threads, queues, IO and processor affinity, and reporting. [6] In 2024, the command was updated to handle modern workloads and hardware like NVMe.

  9. Hard Disk Sentinel - Wikipedia

    en.wikipedia.org/wiki/Hard_Disk_Sentinel

    In 2008, Hard Disk Sentinel DOS version was released in different formats on bootable pen drive, CD, floppy. Usable when no operating system installed (or if the system is not bootable otherwise) to detect and display temperature, health status of IDE, SATA hard disk drives and with limited AHCI controller support.