Hesela / Structured knowledge

Storage Knowledge Corpus

Storage definitions, connected to their evidence.

1222 terms · Page 41 of 41

A-Z

  1. Term

    ZFS receive resume token

    A ZFS receive resume token is the receive_resume_token property value that records where an interrupted resumable receive stopped, so zfs send -t can continue it.

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  2. Term

    ZFS separate log

    A ZFS separate log is dedicated pool log-device storage used for intent-log blocks instead of their default allocation in the main pool.

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  3. Term

    ZFS snapshot hold

    A ZFS snapshot hold is a named user reference that blocks ordinary destruction of a snapshot while the hold remains.

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  4. Term

    ZFS transaction group

    A ZFS transaction group is an ordered batch of changes whose synchronization advances the pool's consistent persistent state.

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  5. Term

    ZFS virtual device (vdev)

    A ZFS virtual device (vdev) is a node in a pool's storage hierarchy representing a backing device or a supported device arrangement such as a mirror or RAIDZ group.

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  6. Term

    ZIP archive

    A ZIP archive is a container of individually described entries whose local headers and payloads are indexed by a central directory.

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  7. Term

    Zip drive

    The Zip drive is a removable magnetic disk cartridge format of the 1990s, with 100, 250 and 750 MB media presented to the operating system as a block device with 512-byte sectors.

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  8. Term

    Zone Append

    The native NVMe Zone Append command writes at a controller-selected position within a specified zone and returns the assigned starting logical block address on successful completion.

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  9. Term

    Zone capacity

    Zone capacity is the maximum number of logical blocks that may be written within a zone.

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  10. Term

    Zone Finish

    Zone Finish is a zone management operation that moves a sequential zone to the Full state, so the zone accepts no further writes until it is reset.

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  11. Term

    Zone map (min-max index)

    A zone map is a per-region summary of column-value bounds that lets a reader skip regions that cannot satisfy a query predicate.

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  12. Term

    Zone Reset

    Zone Reset is a zone management operation that returns a sequential zone to the Empty state with its write pointer at the zone start, discarding its data.

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  13. Term

    Zone write locking

    A Linux mechanism that serializes covered write requests to the same sequential zone using a per-zone lock.

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  14. Term

    Zone write plugging

    Zone write plugging is a Linux block-layer mechanism that queues writes per sequential zone so that at most one write to each zone is in flight.

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  15. Term

    Zone write pointer

    A zone write pointer identifies the next writable logical block address in a sequential zone when its current state makes that pointer valid.

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  16. Term

    Zoned bit recording (ZBR)

    Zoned bit recording groups HDD tracks into radial zones with different sector counts per track, typically assigning more sectors to outer tracks.

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  17. Term

    Zoned block device (ZBD)

    A zoned block device exposes a logical block address space divided into zones with zone-specific access rules.

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  18. Term

    Zoned namespace

    A zoned namespace is an NVMe namespace whose logical address space follows the ZNS command set's zone organization and write constraints.

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  19. Term

    Zoned namespaces (ZNS)

    Zoned Namespaces (ZNS) is an NVMe command set that organizes a namespace into zones with sequential-write constraints and explicit reset before reuse.

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  20. Term

    Zstandard

    Zstandard is a lossless compression format and codec that stores data in frames with optional external dictionaries and content checksums.

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  21. Term

    Zstandard dictionary ID

    A Zstandard dictionary ID is a numeric label used to select and check the external dictionary expected by a compressed frame.

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  22. Term

    Zstandard window size

    Zstandard window size is a frame parameter that bounds references into previously decoded frame data and determines decoding-history requirements.

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