• Home
    Essentials – Computer – Hard Disk Drive

    NameHard Drive (HDD)
    TypeStorage Device
    FunctionTo store and retrieve digital data (both program files and user data)
    Access MethodRandom Access, meaning data can be stored or retrieved in any order
    CapacityMeasured in Gigabytes (GB) or Terabytes (TB), ranging from a few GBs in small devices to TBs in larger, modern versions
    Form FactorStandardized at 2.5″ for laptop drives and 3.5″ for desktop drives
    InterfaceTypically uses SATA (Serial ATA), older drives may use PATA (Parallel ATA), enterprise drives may use SAS (Serial Attached SCSI)
    SpeedRevolutions Per Minute (RPM), common standards being 5400 RPM or 7200 RPM
    Data Transfer RateDependent on interface and drive specifications, SATA III can theoretically reach 600 MB/s
    LifespanDependent on usage and environment, but typically between 3 and 5 years