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  2. Hard disk drive interface - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive_interface

    The SAS is a new generation serial communication protocol for devices designed to allow for much higher speed data transfers and is compatible with SATA. SAS uses a mechanically identical data and power connector to standard 3.5-inch SATA1/SATA2 HDDs, and many server-oriented SAS RAID controllers are also capable of addressing SATA hard drives.

  3. Solid-state drive - Wikipedia

    en.wikipedia.org/wiki/Solid-state_drive

    They phased out around 2015 to replace with the newer M.2 format which is faster in a traditional 2.5" SATA SSD as it uses the PCI Express standard. A solid-state drive (SSD) is a type of solid-state storage device that uses integrated circuits to store data persistently.

  4. Enterprise and Data Center Standard Form Factor - Wikipedia

    en.wikipedia.org/wiki/Enterprise_and_Data_Center...

    As a family of form factors, it defines specifications for the mechanical dimensions and electrical interfaces devices should have, to ensure compatibility between disparate hardware manufacturers. The standard is meant to replace the U.2 form factors for drives used in data centers. [1] EDSFF provides a pure NVMe over PCIe interface. One ...

  5. Advanced Host Controller Interface - Wikipedia

    en.wikipedia.org/wiki/Advanced_Host_Controller...

    AHCI is separate from the SATA 3 Gbit/s standard, although it exposes SATA's advanced capabilities (such as hot swapping and native command queuing) such that host systems can utilize them. For modern solid state drives, the interface has been superseded by NVMe. [2] The current version of the specification is 1.3.1.

  6. NVM Express - Wikipedia

    en.wikipedia.org/wiki/NVM_Express

    Historically, most SSDs used buses such as SATA, SAS, or Fibre Channel for interfacing with the rest of a computer system. Since SSDs became available in mass markets, SATA has become the most typical way for connecting SSDs in personal computers; however, SATA was designed primarily for interfacing with mechanical hard disk drives (HDDs), and it became increasingly inadequate for SSDs, which ...

  7. Native Command Queuing - Wikipedia

    en.wikipedia.org/wiki/Native_Command_Queuing

    The NVM Express (NVMe) standard also supports command queuing, in a form optimized for SSDs. [17] NVMe allows multiple queues for a single controller and device, allowing at the same time much higher depths for each queue, which more closely matches how the underlying SSD hardware works.

  8. SATA - Wikipedia

    en.wikipedia.org/wiki/SATA

    A 3.5-inch Serial ATA hard disk drive A 2.5-inch Serial ATA solid-state drive. SATA was announced in 2000 [4] [5] in order to provide several advantages over the earlier PATA interface such as reduced cable size and cost (seven conductors instead of 40 or 80), native hot swapping, faster data transfer through higher signaling rates, and more efficient transfer through an (optional) I/O queuing ...

  9. Non-volatile memory - Wikipedia

    en.wikipedia.org/wiki/Non-volatile_memory

    Other examples of non-volatile memory include read-only memory (ROM), EPROM (erasable programmable ROM) and EEPROM (electrically erasable programmable ROM), ferroelectric RAM, most types of computer data storage devices (e.g. disk storage, hard disk drives, optical discs, floppy disks, and magnetic tape), and early computer storage methods such ...

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