Introduction of Windows 7 differential backup
Differential backup refers to a backup in which data objects modified since the last full backup or incremental backup are copied. In another word, a differential backup is used to back up the changed data on the last full backup. A differential backup backs up only the selected files that have their archive bit set to ON but does not set the archive bit back to OFF. A Differential backup will back up all selected files that are new and changed since the last full backup. The advantage of a Differential backup comes at restore time; you will need only the last full backup and the last differential to get a complete restore.
With the development of the information-based society, computer use has been more and more pervasive. Data safety has been a major consideration for computer users, so backup data has been an essential part in the daily life. Generally speaking, there are three means of backup, that is, full backup, incremental backup, differential backup. Nowadays, to do system differential backup is popular among computer users. When it comes to the advantages of the differential backup, it can help to improve backup efficiency and reduce storage disk space required by the image file.
To better understand differential backup, we need to introduce full backup. A full backup refers to a backup of all the valid data, whether it is new added or exists for a long time. For an example, you perform a full backup on Sunday and a differential every night, when the system crashes on Thursday you will only need to restore the full backup from Sunday and the differential backup from Wednesday.
How to do Windows 7 differential backup
Free software, AOMEI Backupper has been one perfect choice for computer users to do Windows 7 differential backup. AOMEI Backupper can not only differential backup and incremental backup, but also have clone function. Here is the main interface of AOMEI Backupper. For the related steps of Windows 7 differential backup, please have a look at How to DO Incremental Backup and Differential Backup.
AOMEI Backupper has been considered to be perfect freeware. If you want to download AOMEI Backupper, please click here