Hesela / Structured knowledge

Storage Knowledge Corpus

Storage definitions, connected to their evidence.

866 terms · Page 29 of 29

A-Z

  1. Term

    XTS-AES

    XTS-AES is a tweakable AES encryption mode for storage data units that provides confidentiality without authenticating the data or its source.

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  2. Term

    ZAC

    ZAC (Zoned Device ATA Command Set) is the ATA command set through which a host identifies and controls the zones of host-aware or host-managed SMR disks on a SATA interface, the counterpart of the SCSI ZBC command set.

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  3. Term

    ZBC

    ZBC (Zoned Block Commands) is the T10 SCSI command set for zoned block devices, whose host-managed model reports peripheral device type 14h and requires writes in sequential-write-required zones to start at the zone's write pointer.

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  4. Term

    Zero-copy I/O

    Zero-copy I/O is a data-transfer technique that avoids one or more payload copies between buffers or address spaces.

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  5. Term

    ZFS bookmark

    A ZFS bookmark is a snapshot-history reference that can anchor an incremental send without exposing the snapshot's file contents.

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  6. Term

    ZFS error scrub

    A ZFS error scrub is an integrity scan restricted to files already recorded with data errors.

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  7. Term

    ZFS Intent Log

    The ZFS Intent Log is a per-dataset recovery log that can persist filesystem operations before their transaction group reaches stable storage.

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  8. Term

    ZFS raw send

    ZFS raw send transfers an encrypted dataset in its stored encrypted representation, preserving the encryption metadata needed for compatible incremental receives.

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  9. Term

    ZFS receive resume token

    A ZFS receive resume token is an opaque property value used to resume a saved, partially completed filesystem or volume receive.

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  10. 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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  11. 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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  12. 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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  13. Term

    Zip drive

    A removable cartridge drive format from Iomega offering tens to hundreds of megabytes per disk in the 1990s.

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  14. 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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  15. Term

    Zone capacity

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

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  16. Term

    Zone Finish

    Zone Finish changes an eligible sequential zone to Full, ending further writes until reset without discarding the data already written.

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  17. 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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  18. Term

    Zone Reset

    Zone Reset makes an eligible sequential zone empty for reuse, returns its write pointer to the zone start and invalidates access to its previous data.

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  19. 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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  20. Term

    Zone write plugging

    A Linux block-layer mechanism that queues covered writes per sequential zone before dispatch to preserve the issuer's sequential write pattern.

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  21. 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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  22. 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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  23. 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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  24. 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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  25. 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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  26. 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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