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  2. Hard disk drive performance characteristics - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive...

    Some SATA II and later hard disk drives support staggered spin-up, allowing the computer to spin up the drives in sequence to reduce load on the power supply when booting. [44] Most hard disk drives today support some form of power management which uses a number of specific power modes that save energy by reducing performance.

  3. Standard RAID levels - Wikipedia

    en.wikipedia.org/wiki/Standard_RAID_levels

    A RAID 0 array of n drives provides data read and write transfer rates up to n times as high as the individual drive rates, but with no data redundancy. As a result, RAID 0 is primarily used in applications that require high performance and are able to tolerate lower reliability, such as in scientific computing [5] or gaming.

  4. IOPS - Wikipedia

    en.wikipedia.org/wiki/IOPS

    Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN).

  5. Comparison of S.M.A.R.T. tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_S.M.A.R.T._tools

    Fixed drives USB, eSATA and removable drives RAID support [a] Shows S.M.A.R.T. attributes Hard drive self-testing Notification Notes AIDA64: Windows: Trialware [1] GUI IDE(PATA), SATA, NVMe eSATA, USB Some RAID controllers Yes No Monitoring only available in the Business Edition [2]

  6. Non-standard RAID levels - Wikipedia

    en.wikipedia.org/wiki/Non-standard_RAID_levels

    File system performance becomes less dependent upon the speed of any single rebuilding storage array. [34] Dynamic disk pooling (DDP), also known as D-RAID, maintains performance even when up to 2 drives fail simultaneously. [35] DDP is a high performance type of declustered RAID. [36]

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

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

    Hard disk and other storage drives are subject to failures (see hard disk drive failure) which can be classified into two basic classes: Predictable failures which result from slow processes such as mechanical wear and gradual degradation of storage surfaces. Monitoring can determine when such failures are becoming more likely.

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