Data storage

Data storage is the recording and retention of digital information on media or systems so it can be retrieved and used later.

Binary data: Information represented using sequences of binary digits, or bits. Digital storage records information as bit patterns.
Bit: The smallest unit of digital information, with a value of zero or one. Storage capacity ultimately measures how many bits can be retained.
Solid-state drive: A data storage device that uses flash memory and has no moving parts. SSDs provide fast persistent storage in computers and servers.
Data transmission: The movement of digital information between devices or locations. Transmission moves data across distance; storage retains it over time.
Data durability: The likelihood that stored data remains intact and accessible over time. Durability measures whether stored information survives aging and failures.
Storage medium: The physical material or device on which data is recorded. The medium holds the physical states that encode stored data.
Byte: A unit of digital information commonly consisting of eight bits. Bytes are the standard units used to express storage capacity.
Hard disk drive: A storage device that records data magnetically on rotating disks. HDDs offer high-capacity persistent storage at relatively low cost.
Data caching: Temporary retention of frequently used data to reduce access time. Caching prioritizes speed and can discard data, unlike durable storage.
Digital preservation: The practices used to keep digital information accessible and authentic over time. Long-lived storage requires formats, media, and systems that remain usable.

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