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Incremental backup
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Incremental backup : ウィキペディア英語版
Incremental backup
An incremental backup is one that provides a backup of files that have changed or are new since the last incremental backup;〔(''Description of Full, Incremental, and Differential Backups.'' ) Microsoft Support. Retrieved 21 August 2012.〕 it is one that backs up only the data that have changed since the last backup — be it a full or incremental backup.〔(''3.3.2. Making an Incremental Backup.'' ) (MySQL Enterprise Backup User's Guide (Version 3.7.1) :: II Using MySQL Enterprise Backup :: 3 Backing Up a Database Server :: 3.3 Backup Scenarios and Examples :: 3.3.2 Making an Incremental Backup). MySQL. Retrieved 21 August 2012.〕〔(ARCserve Backup r16-ENU/Bookshelf_Files/PDF/AB_MS_EXCHANGE_W_ENU.pdf ''CA ARCserve Backup for Windows: Agent for Microsoft Exchange Server Guide, r16'' ) CA Technologies Technical Support. Page 52. Retrieved 21 August 2012.〕〔(''What are the differences between Differential and Incremental backups?.'' ) Symantec Enterprise Technical Support. Article: TECH7665. Created: 2000-01-27; Updated: 2012-05-12. Retrieved 21 August 2012.〕 An incremental backup is a backup of latest changes since the last backup (any level) so that when a full recovery is needed the restoration process would need the last full backup plus all the incremental backups until the point-in-time of the restoration.〔(''SQL Server differential backups.'' ) Carlos Rojas. EMC Community Network. EMC Corporation. 2 March 2011. Retrieved 21 August 2012.〕 Incremental backups are often desirable as they consume minimum storage space and are quicker to perform than differential backups.〔(''NetApp SnapMirror Block Level Incremental Backup to Tape with NetVault Backup.'' ) Charles Keiper, Senior Product Manager. Quest Software. 1 August 2012. Retrieved 21 August 2012.〕 The purpose of an incremental backup is to preserve and protect data by creating copies that are based on the differences in those data and thus minimize the amount of time needed to perform the backup. With incremental backups, successive copies of the data contain only that portion that has changed since the preceding backup copy was made.
==Variants==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Incremental backup」の詳細全文を読む



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