Browse Definitions :
Definition

virtual address

A virtual address is a binary number in virtual memory that enables a process to use a location in primary storage (main memory) independently of other processes and to use more space than actually exists in primary storage by temporarily relegating some contents to a hard disk or internal flash drive.

In a computer that incorporates memory management, the virtual address differs from the physical address, which is the data location on an address bus that corresponds to a particular cell of primary storage or to a particular register in a memory-mapped I/O (input/output) device.

In a computer with both physical and virtual memory, a so-called MMU (memory management unit) coordinates and controls all of the memory resources, assigning portions called blocks to various running programs to optimize system performance. By translating between virtual addresses and physical addresses, the MMU allows every running process to "think" that it has all the primary storage to itself.

This was last updated in September 2012

Continue Reading About virtual address

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • identity provider

    An identity provider (IdP) is a system component that provides an end user or internet-connected device with a single set of ...

  • remote access

    Remote access is the ability for an authorized person to access a computer or network from a geographical distance through a ...

  • malware

    Malware, or malicious software, is any program or file that is intentionally harmful to a computer, network or server.

SearchHealthIT
SearchDisasterRecovery
  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

SearchStorage
  • cold storage

    Cold storage is a computer system or mode of operation designed for the retention of inactive data.

  • tiered storage

    Tiered storage is a method for assigning different categories of data to various types of storage media to reduce overall storage...

  • secondary storage

    Secondary storage is persistent storage for noncritical data that doesn't need to be accessed as frequently as data in primary ...

Close