» 
Arabic Bulgarian Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hindi Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Malagasy Norwegian Persian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Thai Turkish Vietnamese
Arabic Bulgarian Chinese Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hindi Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Malagasy Norwegian Persian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Thai Turkish Vietnamese

definition - DISASTER RECOVERY

definition of Wikipedia

   Advertizing ▼

Wikipedia

Disaster recovery

                   

Disaster recovery is the process, policies and procedures related to preparing for recovery or continuation of technology infrastructure critical to an organization after a natural or human-induced disaster. Disaster recovery is a subset of business continuity. While business continuity involves planning for keeping all aspects of a business functioning in the midst of disruptive events, disaster recovery focuses on the IT or technology systems that support business functions.

Contents

  History

Disaster recovery as a concept developed in the mid to late 1970s as computer center managers began to recognize the dependence of their organizations on their computer systems. At that time most systems were batch-oriented mainframes which in many cases could be down for a number of days before significant damage would be done to the organization.[1]

As awareness of disaster recovery grew, an industry developed to provide backup computer centers, with Sun Information Systems (which later became Sungard Availability Systems) becoming the first major US commercial hot site vendor, established in 1978 in Philadelphia.[2]

During the 1980s and 1990s, IT disaster recovery awareness and the disaster recovery industry grew rapidly, driven by the advent of open systems and real-time processing (which increased the dependence of organizations on their IT systems). Another driving force in the growth of the industry was increasing government regulations mandating business continuity and disaster recovery plans for organizations in various sectors of the economy.

With the rapid growth of the Internet through the late 1990s and into the 2000s, organizations of all sizes became further dependent on the continuous availability of their IT systems, with many organizations setting an objective of 99.999% availability of critical systems.[citation needed] This increasing dependence on IT systems, as well as increased awareness from large-scale disasters such as 9/11, contributed to the further growth of various disaster recovery related industries, from high-availability solutions to hot-site facilities.

  Importance of disaster recovery planning

As IT systems have become increasingly critical to the smooth operation of a company, and arguably the economy as a whole, the importance of ensuring the continued operation of those systems, or the rapid recovery of the systems, has increased.

It is estimated that most large companies spend between 2% and 4% of their IT budget on disaster recovery planning, with the aim of avoiding larger losses in the event that the business cannot continue to function due to loss of IT infrastructure and data. Of companies that had a major loss of business data, 43% never reopen, 51% close within two years, and only 6% will survive long-term.[3][unreliable source?]

As a result, preparation for continuation or recovery of systems needs to be taken very seriously. This involves a significant investment of time and money with the aim of ensuring minimal losses in the event of a disruptive event.

  Classification of disasters

Disasters can be classified in two broad categories. The first is natural disasters such as floods, hurricanes, tornadoes or earthquakes. While preventing a natural disaster is very difficult, measures such as good planning which includes mitigation measures can help reduce or avoid losses. The second category is man made disasters. These include hazardous material spills, infrastructure failure, or bio-terrorism. In these instances surveillance and mitigation planning are invaluable towards avoiding or lessening losses from these events.

  Control measures in recovery plan

Control measures are steps or mechanisms that can reduce or eliminate various threats for organizations. Different types of measures can be included in BCP/DRP.

Disaster recovery planning is a subset of a larger process known as business continuity planning and should include planning for resumption of applications, data, hardware, communications (such as networking) and other IT infrastructure. A business continuity plan (BCP) includes planning for non-IT related aspects such as key personnel, facilities, crisis communication and reputation protection, and should refer to the disaster recovery plan (DRP) for IT related infrastructure recovery / continuity. This article focuses on disaster recovery planning as related to IT infrastructure. Types of measures:

  1. Preventive measures - These controls are aimed at preventing an event from occurring.
  2. Detective measures - These controls are aimed at detecting or discovering unwanted events.
  3. Corrective measures - These controls are aimed at correcting or restoring the system after a disaster or an event.

These controls should be always documented and tested regularly.

  Strategies

Prior to selecting a disaster recovery strategy, a disaster recovery planner should refer to their organization's business continuity plan which should indicate the key metrics of recovery point objective (RPO) and recovery time objective (RTO) for various business processes (such as the process to run payroll, generate an order, etc.). The metrics specified for the business processes must then be mapped to the underlying IT systems and infrastructure that support those processes.[4]

Incomplete RTOs and RPOs can quickly derail a disaster recovery plan. Every item in the DR plan requires a defined recovery point and time objective, and failure to create them may lead to significant problems that can extend the disaster’s impact.[5] Once the RTO and RPO metrics have been mapped to IT infrastructure, the DR planner can determine the most suitable recovery strategy for each system. An important note here however is that the business ultimately sets the IT budget and therefore the RTO and RPO metrics need to fit with the available budget. While most business unit heads would like zero data loss and zero time loss, the cost associated with that level of protection may make the desired high availability solutions impractical.

The following is a list of the most common strategies for data protection.

  • Backups made to tape and sent off-site at regular intervals
  • Backups made to disk on-site and automatically copied to off-site disk, or made directly to off-site disk
  • Replication of data to an off-site location, which overcomes the need to restore the data (only the systems then need to be restored or synchronized). This generally makes use of storage area network (SAN) technology
  • High availability systems which keep both the data and system replicated off-site, enabling continuous access to systems and data

In many cases, an organization may elect to use an outsourced disaster recovery provider to provide a stand-by site and systems rather than using their own remote facilities.

In addition to preparing for the need to recover systems, organizations must also implement precautionary measures with an objective of preventing a disaster in the first place. These may include some of the following:

  • Local mirrors of systems and/or data and use of disk protection technology such as RAID
  • Surge protectors — to minimize the effect of power surges on delicate electronic equipment
  • Uninterruptible power supply (UPS) and/or backup generator to keep systems going in the event of a power failure
  • Fire preventions — alarms, fire extinguishers
  • Anti-virus software and other security measures

  See also

  FEMA mobile disaster recovery center set up at South Kingstown, Rhode Island, April 13, 2010

  References

  1. ^ A Brief History of Disaster Recovery, safetynet247.co.uk
  2. ^ SunGard Data Systems: Company history, fundinguniverse.com
  3. ^ Hoffer, Jim. "Backing Up Business - Industry Trend or Event." Health Management Technology, January 2001, findarticles.com
  4. ^ Gregory, Peter. CISA Certified Information Systems Auditor All-in-One Exam Guide, 2009. ISBN 978-0-07-148755-9. Page 480.
  5. ^ "Five Mistakes That Can Kill a Disaster Recovery Plan". Dell.com. http://content.dell.com/us/en/enterprise/d/large-business/mistakes-that-kill-disaster.aspx. Retrieved 06-22-12. 

  Further reading

  International Organization for Standardization

  • ISO/IEC 27001:2005 (formerly BS 7799-2:2002) Information Security Management System
  • ISO/IEC 27002:2005 (remunerated ISO17999:2005) Information Security Management - Code of Practice
  • ISO/IEC 22399:2007 Guideline for incident preparedness and operational continuity management
  • ISO/IEC 24762:2008 Guidelines for information and communications technology disaster recovery services
  • IWA 5:2006 Emergency Preparedness—British Standards Institution --
  • BS 25999-1:2006 Business Continuity Management Part 1: Code of practice
  • BS 25999-2:2007 Business Continuity Management Part 2: Specification
  • BS 25777:2008 Information and communications technology continuity management - Code of practice—Others --
  • "A Guide to Business Continuity Planning" by James C. Barnes
  • "Business Continuity Planning", A Step-by-Step Guide with Planning Forms on CDROM by Kenneth L Fulmer
  • "Disaster Survival Planning: A Practical Guide for Businesses" by Judy Bell
  • ICE Data Management (In Case of Emergency) made simple - by MyriadOptima.com
  • Harney, J.(2004). Business continuity and disaster recovery: Back up or shut down.
  • AIIM E-Doc Magazine, 18(4), 42-48.
  • Dimattia, S. (November 15, 2001).Planning for Continuity. Library Journal,32-34.

  External links

   
               

 

All translations of DISASTER RECOVERY


sensagent's content

  • definitions
  • synonyms
  • antonyms
  • encyclopedia

Dictionary and translator for handheld

⇨ New : sensagent is now available on your handheld

   Advertising ▼

sensagent's office

Shortkey or widget. Free.

Windows Shortkey: sensagent. Free.

Vista Widget : sensagent. Free.

Webmaster Solution

Alexandria

A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Give contextual explanation and translation from your sites !

Try here  or   get the code

SensagentBox

With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Choose the design that fits your site.

Business solution

Improve your site content

Add new content to your site from Sensagent by XML.

Crawl products or adds

Get XML access to reach the best products.

Index images and define metadata

Get XML access to fix the meaning of your metadata.


Please, email us to describe your idea.

WordGame

The English word games are:
○   Anagrams
○   Wildcard, crossword
○   Lettris
○   Boggle.

Lettris

Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.

boggle

Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !

English dictionary
Main references

Most English definitions are provided by WordNet .
English thesaurus is mainly derived from The Integral Dictionary (TID).
English Encyclopedia is licensed by Wikipedia (GNU).

Copyrights

The wordgames anagrams, crossword, Lettris and Boggle are provided by Memodata.
The web service Alexandria is granted from Memodata for the Ebay search.
The SensagentBox are offered by sensAgent.

Translation

Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.

last searches on the dictionary :

2904 online visitors

computed in 0.031s

   Advertising ▼

I would like to report:
section :
a spelling or a grammatical mistake
an offensive content(racist, pornographic, injurious, etc.)
a copyright violation
an error
a missing statement
other
please precise:

Advertize

Partnership

Company informations

My account

login

registration

   Advertising ▼