online backup
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online backup


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DEFINITION - Online backup, also known as remote backup, is a method of offsite data storage in which files, folders, or the entire contents of a hard drive are regularly backed up on a remote server or computer with a network connection. A number of companies provide online backup services for subscribers whose computers are connected to the Internet, automatically copying selected files to backup storage at the service provider's location. This is sometimes called Web-based backup.

The rationale behind online backup is simple. By frequently (or continuously) backing up data on a remote hard drive, the risk of catastrophic data loss as a result of fire, theft, file corruption, or other disaster is practically eliminated. With a high-speed Internet connection and a Web browser interface, the remote files and folders appear as if they are stored on an external local hard drive. Encryption and password protection help to ensure privacy and security.

For the home and small business computer user, online backup services may be unaffordable if the intent is to totally back up a hard drive on a frequent basis. This problem can be mitigated by backing up only the most critical or often-changed files online, and using physical offsite backup methods for less important or infrequently changed files. For medium-sized and large enterprises or for particularly valuable data, the cost of online backup can prove to be a wise investment.

In a database, an online backup, more often called a hot backup or dynamic backup, is a backup performed on data even though it is actively accessible to users and may currently be in a state of being updated. Online backups can provide a convenient solution in multi-user systems because they do not require downtime, as does a conventional offline (cold) backup.

Learn more about Disaster recovery and planning
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IT disaster recovery (DR) plan template: A free download and sample plan: Download our free IT disaster recovery (DR) plan and then read our step-by-step guide on IT disaster recovery planning.
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LAST UPDATED: 08 Apr 2008

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More resources from around the web:
- Bud Stoddard of AmeriVault describe the benefits of online backup.
- U.S. Data Trust provides an overview of how online backup works.
- Digital Output describes options for backing up a database.





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