I have to keep each backup set or only the most recent

Original title: backup sets

I use backup and restore to make a weekly backup of my files.  A new set of files is created every week, but the size varies.  Each new set of backup files is complete or each new lot only contains the updated items?  I have to keep each backup set or just the most recent?

Hello

It depends on what type of backup you do?

If you did a full backup of the system simply perform a differential or incremental backup on a regular basis.

Differential backup

A differential backup copies files that were created or changed since the last normal or incremental backup. It does not mark files as having been backed up (in other words, archive attribute is not cleared). If you are performing a combination of normal and differential backups, restoring files and folders requires that you have the last normal and last differential backup.

Incremental backup

An incremental backup backs up only files that were created or changed since the last normal or incremental backup. It marks files as having been backed up (in other words, archive attribute is cleared). If you use a combination of normal and incremental backups, you will need to have the last normal backup set as well as all incremental backup sets to restore your data.

http://TechNet.Microsoft.com/en-us/library/cc784306 (v = WS.10) .aspx

Tags: Windows

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