Disaster Recovery Definitions

This glossary explains the meaning of key words and phrases that information technology (IT) and business professionals use when discussing disaster recovery and related software products. You can find additional definitions by visiting WhatIs.com or using the search box below.

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  • D

    data recovery

    Data recovery restores data that has been lost, accidentally deleted, corrupted or made inaccessible. Learn how data recovery works, causes of data loss and data recovery techniques.

  • data replication

    Data replication copies data from one location to another using a SAN, LAN or local WAN. This allows organizations to have current data available in case a disaster occurs. There are two types of data replication: synchronous and asynchronous.

  • disaster recovery (DR)

    Disaster recovery strategies are critical, as many businesses fail following an unforeseen event. DR may require an internal or external site when a main data center is down.

  • disaster recovery (DR) test

    A disaster recovery (DR) test is the examination of each step in a disaster recovery program, as outlined in the business continuity/disaster recovery (BCDR) planning process. 

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide failover in the event of a man-made or natural catastrophe.

  • disaster recovery plan (DRP)

    A company's disaster recovery policy is enhanced with a documented DR plan that formulates strategies, and outlines preparation work and testing.

  • disaster recovery site (DR site)

    An organization uses a disaster recovery (DR) site to recover and restore its technology infrastructure and operations when its primary facility becomes unavailable. In deciding the location and setup of a disaster recovery site, a business must weigh costs against any risks, and heavily consider distance between the DR facility and the primary data center.

  • E

    emergency communications plan (EC plan)

    An emergency communications plan (EC plan) provides guidelines, contact information and procedures for how information should be shared should a crisis that requires immediate action occur.

  • emergency management plan

    An emergency management plan should include measures that provide for the safety of personnel and, if possible, property and facilities.

  • emergency notification system

    Emergency notification systems contain names, addresses, phone numbers and email addresses so crucial information can be communicated to employees during a disaster.

  • F

    fault-tolerant

    Systems with integrated fault tolerance are designed to withstand multiple hardware failures to ensure continuous availability.

  • FFIEC Cybersecurity Assessment Tool

    The Federal Financial Institutions Examination Council developed the Cybersecurity Assessment Tool to help organizations identify cybersecurity risks and determine their level of preparedness.

  • H

    high availability cluster (HA cluster)

    A high availability cluster is a group of hosts that act like a single system and provide continuous uptime.

  • I

    incident management plan (IMP)

    An incident management plan (IMP), sometimes called an incident response plan or emergency management plan, is a document that helps an organization return to normal as quickly as possible following an unplanned event.

  • ISO 22301 (International Organization of Standardization standard 22301)

    International Organization of Standardization standard 22301 (ISO 22301) is a proposed standard that would call for meeting specific societal security requirements for disaster preparedness and business continuity management systems (BCMS). It is currently in draft form that, if approved, would call for requirements for creating a BCMS, as well as managing and improving that system.

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