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Synthetic backup meaning3/1/2024 ![]() Refer to this article to configure the cloud storage as a open dedupe ost device (do a full and Incremental to disk and duplicate the full to this cloud ost open dedupe storage) If you want, you can do the Full and Incremental to local Disk and then Duplicate the Full Backup to Cloud storage. (as a side note, if backing up or duplicating to cloud just ensure verify is disabled in the Job) In short, it is like a full Backup to Cloud, so cost wise I am not sure how much it will lower the cost. You can do a Full backup to Disk (weekend), Incremental Backup to Disk (weekdays) and synthetic to cloud storage will just combine Full and Incrementals and create a new synthetic Full on the Cloud. The synthetic backup will be applicable only for file system dataģ. You will need to install the "Advanced Disk Based Backup feature" Backup Exec Console -> Installation and Licensing -> Install Features and Licenses on this Backup Exec serverĢ. Or do I have to do configure it a different way?ġ. Or do I have to configure the Full, Incrementals, and Synthetic Full to go to Disk and then add a separate duplicate task for the Synthetic Full Backup to go to the Cloud?.Do I configure the Full and Incrementals to go to Disk and then configure the Synthetic Full Backup to go directly to the cloud?.How would I configure this in Backup Exec? A Synthetic Backup is defined in Backup Exec as a baseline Full, Incrementals, and a Synthetic Full Backup. Duplicate the incremental daily backups to the cloud to be retained for one week.Synthetic full backup to cloud to be retained perpetually.Incremental daily backups to disk to be retained for one week on disk.Full weekly backups to disk to be retained for one month on disk.To minimize the amount of data to be transferred, it looks like synthetic backups are the way to go for cloud backup. However a regular duplicate of the Full to the cloud would be both time and cost prohibitive. What I am hoping to do is also duplicate these backups to the cloud. The Incremental backups are retained for a week. The Full backups are retained on disk for a month. The figure below shows the Synthetic Full Backup set contains A.txt and C.txt.I am currently doing Full backups to disk at the end of the work week with incremental backups to disk at the end of each work day. The Restore tab shows that the Synthetic backup only contains two files because the catalog tables were updated about the deletion of B.txt and hence, during the synthetic backup operation, only files A.txt and C.txt were read from the catalog database for creating a Synthetic single backup set. The figure below shows only C.txt has been backed up.ģ. ![]() ![]() Running Incremental backups would result in the backup of C.txt and the catalog information will be updated about the deletion of B.txt file. The Restore tab shows that all three files have been backed up.īefore running the Incremental backup, modify the following files:Ģ. The following files are selected for backup: How synthetic backup excludes the "deleted file" with the help of catalog driven backup:ġ. It also provides reduced network traffic as the Synthetic backup job does not need to access the network. The ADBO option is intended to provide a reduced backup window as another FULL backup is not needed as the Incremental data has been synthesized into one Synthetic Full backup. Restore selections for Synthetics will appear to be missing information, when in fact, this is by design. It is important to understand when the Synthetic backup synthesizes the Incremental backups, it then becomes a Full backup of the server at the time when the Synthetic was ran, not when the Baseline was initiated. It can be misunderstood the Normal Full backup (Baseline) will match the Synthetic Full backup once the Incremental backups are synthesized with the Baseline. But in the case of Synthetic Full backup, it excludes such files and does not include it in the final catalog information for the Synthetic Full Backup, which not only makes the restore job faster, but also compact. In this condition, any NORMAL FULL backup job would restore the "Deleted File" whether you want it or not. Due to this intelligence, it does not include the file which is deliberately deleted by the user and is no longer required during restore. Synthetic backup is also known as catalog driven backup because it maintains the table of catalog information and updates it with the help of the Collect additional information for synthetic backup feature, constantly depending upon the file appended, modified, or deleted.
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