LBA (Logical Block Addressing)

E762364

LBA (Logical Block Addressing) is a method of specifying the location of data blocks on storage devices using a linear block number scheme instead of traditional cylinder-head-sector (CHS) addressing.

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Observed surface forms (1)

Surface form Occurrences
LBA 0

Statements (48)

Predicate Object
instanceOf data addressing scheme
logical block addressing method
addressingModel linear block number scheme
addressingType logical addressing
advantageOverCHS better scalability with disk size
independence from physical geometry
simplified addressing
blockSizeTypical 4096 bytes
512 bytes
compatibleWith modern large-capacity disks
definedAtInterfaceLevel host-to-disk interface
enables support for large disk capacities
fullName Logical Block Addressing NERFINISHED
independentOf disk cylinder count
disk head count
disk sector-per-track count
mapsTo physical sectors on disk
relatedConcept CHS addressing
GPT NERFINISHED
LBA28
LBA48
MBR
cylinder
partition table
sector
track
replaces CHS addressing
cylinder-head-sector addressing
unitOfAddressing block
usedBy device drivers
disk controllers
file systems
operating systems
usedFor specifying locations of data blocks on storage devices
usedIn BIOS disk services
GPT partitioning
MBR partitioning
NVMe storage devices
RAID controllers
SATA storage devices
SCSI storage devices NERFINISHED
UEFI firmware NERFINISHED
flash memory devices
hard disk drives
optical drives
partition tables
solid-state drives
usedSince 1990s

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

ATA-5 supportsFeature LBA (Logical Block Addressing)