Sql Server 2008 Backups

Full Backup: A complete backup of everything you want to backup.
                      A full backup contains all the data in a specific database or set of filegroups or files, and also                               enough log to allow for recovering that data.
Benefits:     Restoration is fast, since you only need one set of backup data.
Drawbacks:The backing up process is slow.
                    High storage requirements.



Differential Backup: The backup software looks at which files have changed since you last did a full backup. Then creates copies of all the files that are different from the ones in the full backup.

If you do a differential backup more than once, it will copy all the files, or parts of files that have changed since the last full backup, even if you already have identical copies of those files in a previous differential backup.

For restoring all the data, you will only need the the last full backup, and the last differential backup.


 Benefits: Faster to create than a full backup.Not as much storage needed as in a full backup.
Drawbacks: Restoration is slower than using a full backup.

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