What is logical block addressing (LBA)? - Definition from WhatIs.com

Definition

logical block addressing (LBA)

Part of the Computing fundamentals glossary:

Logical block addressing is a technique that allows a computer to address a hard disk larger than 528 megabytes. A logical block address is a 28-bit value that maps to a specific cylinder-head-sector address on the disk. 28 bits allows sufficient variation to specify addresses on a hard disk up to 8.4 gigabytes in data storage capacity. Logical block addressing is one of the defining features of Enhanced IDE (EIDE), a hard disk interface to the computer bus or data paths.

This was last updated in April 2005
Posted by: Margaret Rouse

Related Terms

Definitions

  • unique identifier (UID)

    - A unique identifier (UID) is a numeric or alphanumeric string that is associated with a single entity within a given system. (WhatIs.com)

  • cache memory

    - Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM. (SearchStorage.com)

  • service-oriented architecture (SOA)

    - Service oriented architecture (SOA) is a technique that involves the interaction between loosely coupled services that function independently. (SearchSOA.com)

Glossaries

  • Computing fundamentals

    - Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About logical block addressing (LBA)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.