Let us check the Differential and Incremental type of back up today.

Differential Back Up

Differential back up is another kind of back up where only files that have been modified will be backed up. This is quite useful as most of the information backed up is not a repeat of the earlier backups, which help in reducing backup memory usage. However this is not the Ideal method as files that have seen minor changes also will be backed up fully. This is generally performed on File/Print servers but may not be useful in application servers where multiple changes are made to documents everyday.

Incremental Back-Up

Incremental back ups are the most desired among the back up methods. Incremental Backups are performed on servers using automated agents that can identify portions of very large files that have been modified. Only the modified portions of these files are extracted and are backed up. This results in using minimum memory space for the back up process as only very little content may have to be added. Assuming that the back up of an application server has to be taken every day, backing up huge files for small changes in any of the documents can be expensive and unnecessary. It may be useful for you to know that Lotus Notes Domino is one of those kinds that support Incremental back up.

This is the most economical and effective method of backing up servers and is widely used across the globe more than Full and Differential Back Up.

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