Data redundancy and ZFS

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Difference between Data redundancy and ZFS

Data redundancy vs. ZFS

In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data. ZFS is a combined file system and logical volume manager designed by Sun Microsystems and now owned by Oracle Corporation.

Btrfs

Btrfs (pronounced as "butter fuss", "better F S", "butter F S", "b-tree F S", or simply by spelling it out) is a file system based on the copy-on-write (COW) principle, initially designed at Oracle Corporation for use in Linux.

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Checksum

A checksum is a small-sized datum derived from a block of digital data for the purpose of detecting errors which may have been introduced during its transmission or storage.

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Data corruption

Data corruption refers to errors in computer data that occur during writing, reading, storage, transmission, or processing, which introduce unintended changes to the original data.

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Data deduplication

In computing, data deduplication is a specialized data compression technique for eliminating duplicate copies of repeating data.

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Data scrubbing

Data scrubbing is an error correction technique that uses a background task to periodically inspect main memory or storage for errors, then correct detected errors using redundant data in the form of different checksums or copies of data.

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ECC memory

Error-correcting code memory (ECC memory) is a type of computer data storage that can detect and correct the most common kinds of internal data corruption.

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Error detection and correction

In information theory and coding theory with applications in computer science and telecommunication, error detection and correction or error control are techniques that enable reliable delivery of digital data over unreliable communication channels.

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File system

In computing, a file system or filesystem controls how data is stored and retrieved.

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Hard disk drive

A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.

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Metadata

Metadata is "data that provides information about other data".

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Oracle Corporation

Oracle Corporation is an American multinational computer technology corporation, headquartered in Redwood Shores, California.

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Redundancy (engineering)

In engineering, redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance, such as in the case of GNSS receivers, or multi-threaded computer processing.

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ZFS

ZFS is a combined file system and logical volume manager designed by Sun Microsystems and now owned by Oracle Corporation.

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