Hesela / Structured knowledge

Storage Knowledge Corpus

Storage definitions, connected to their evidence.

866 terms · Page 2 of 29

A-Z

  1. Term

    Asymmetric Namespace Access

    Asymmetric Namespace Access is the NVMe mechanism for reporting namespace access states through different controllers.

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  2. Term

    Asynchronous commit

    Asynchronous commit is an acknowledgment mode that can report a transaction as successful before its recovery log has reached durable storage.

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  3. Term

    Asynchronous DRAM Refresh

    Asynchronous DRAM Refresh is a platform power-fail mechanism that drains covered memory-controller write-pending buffers to persistent memory without protecting dirty CPU caches.

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  4. Term

    Asynchronous replication

    Asynchronous replication allows primary-side completion without waiting for the corresponding update to reach a specified processing stage on a replica.

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  5. Term

    ATA SMART

    ATA SMART is the ATA interface for retrieving drive self-monitoring attributes, status and logs from supporting devices.

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  6. Term

    ATI refresh

    ATI refresh is a protective HDD firmware operation that reads and rewrites recorded data to mitigate write-induced adjacent-track interference.

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  7. Term

    Atomic rename

    Atomic rename is a filesystem namespace operation whose successful replacement of an existing destination changes the file reached through that pathname without exposing an intermediate missing destination to concurrent lookups.

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  8. Term

    Authenticated encryption

    Authenticated encryption combines confidentiality with cryptographic integrity protection for the protected message.

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  9. Term

    Average precision

    Non-interpolated average precision summarizes ranked prediction scores by weighting precision at each threshold by the corresponding increase in recall.

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  10. Term

    B-epsilon tree

    A B-epsilon tree is an ordered index that buffers update messages in internal nodes and transfers them toward leaves in batches.

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  11. Term

    Background fsck

    Background fsck is a filesystem-specific consistency-checking mode that performs permitted repairs while the filesystem remains in use.

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  12. Term

    Backup

    A backup is a retained copy of data or software intended to support later recovery.

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  13. Term

    Backup manifest

    A backup manifest is a machine-readable inventory of expected backup contents and associated verification metadata.

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  14. Term

    Backup verification

    Backup verification checks stored backup material against specified integrity and completeness rules.

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  15. Term

    Bad block management

    Firmware maps out factory and grown NAND defects so hosts see a contiguous logical address space.

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  16. Term

    Barium ferrite tape

    Barium ferrite (BaFe) tape is particulate magnetic tape whose coating uses hexagonal platelet barium ferrite oxide particles instead of acicular iron-cobalt metal particles, because BaFe keeps usable coercivity at much smaller particle volumes (about 1,000 to 1,600 nm3, against metal particles that lose coercivity below about 2,500 nm3).

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  17. Term

    BD-R HTL

    BD-R HTL is a recordable Blu-ray type whose written marks have lower optical reflectivity than the unrecorded material.

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  18. Term

    BD-R LTH

    BD-R LTH is an organic-dye recordable Blu-ray type whose written marks have higher optical reflectivity than the unrecorded material.

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  19. Term

    Belady anomaly

    A Belady anomaly occurs when a replacement policy produces more misses with a larger cache than with a smaller cache on the same reference string and initial-state convention.

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  20. Term

    Binary fuse filter

    A binary fuse filter is a static approximate-membership structure that assigns XOR-linked fingerprints across consecutive segments to support compact membership tests.

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  21. Term

    Binomial proportion

    A binomial proportion is an outcome count divided by a fixed number of independent binary trials, used to estimate their common outcome probability.

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  22. Term

    Bit error rate

    Bit error rate (BER) expresses erroneous bits relative to the total bits considered at a specified observation point.

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  23. Term

    Bit-patterned media

    Bit-patterned media is a magnetic recording medium that stores individual bits on lithographically defined, separated magnetic islands.

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  24. Term

    Block storage

    Block storage presents capacity as a numbered sequence of fixed-size addressable logical blocks that a host reads and writes by block address, leaving any file, directory or object semantics to software above it.

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  25. Term

    Block-independent compression

    Block-independent compression encodes each block without requiring decoded history from preceding blocks.

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  26. Term

    Block-level mapping (FTL)

    Block-level mapping translates logical flash-block numbers to physical eraseblocks while retaining each page's offset.

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  27. Term

    Blocked Bloom filter

    A Bloom-filter layout that confines the bit probes for a key to one selected block to improve memory locality.

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  28. Term

    Bloom filter

    A compact approximate-membership structure that can reject absent keys but may report a false positive, without false negatives for correctly inserted keys in an intact standard filter.

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  29. Term

    Blu-ray data archive

    A Blu-ray data archive stores retained digital content on recordable BD-R or rewritable BD-RE optical media.

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  30. Term

    Bounded crash testing

    Bounded crash testing systematically explores recovery behavior within an explicitly limited set of workloads, initial states and crash points.

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