Synthetic backup
A synthetic backup can be a synthetic full or a synthetic cumulative backup. The images that are used to create the synthetic image are known as component images. For instance, the component images in a synthetic full backup are the previous full image and the subsequent incremental images. A typical NetBackup backup process accesses the client to create a backup. A synthetic backup is a backup image created without using the client. Instead, a synthetic backup process creates a full or a cumulative incremental image by using previously created backup images called component images. In the synthetic backup workflow, images are fetched from different source storage units, synthesized, and copied to a target storage unit.
The hosts that come into the picture are source media servers and target media server from the same domain.
Table: DTE mode is OFF in the image
Global DTE mode | All NetBackup media server 9.1 and later with DTE mode | Any NetBackup media server earlier than 9.1 | |
|---|---|---|---|
On | Off | ||
Preferred Off | Data is not encrypted | Data is not encrypted | Data is not encrypted |
Preferred On | Data is encrypted | Data is not encrypted | Data is not encrypted |
Enforced | Data is encrypted | Operation fails | Operation fails |
Table: When DTE mode is On for any one of the images and media server DTE setting is On
Global DTE mode | Host | Value of the DTE_IGNORE_IMAGE_MODE configuration option | ||
|---|---|---|---|---|
NEVER (default) | WHERE_UNSUPPORTED | ALWAYS | ||
Preferred Off | All NetBackup media server 9.1 or later | Data is encrypted | Data is encrypted | Data is not encrypted |
Any NetBackup media server earlier than 9.1 | Operation fails | Data is not encrypted | Data is not encrypted | |
Preferred On | All NetBackup media server 9.1 or later | Data is encrypted | Data is encrypted | Data is encrypted |
Any NetBackup media server earlier than 9.1 | Operation fails | Data is not encrypted | Data is not encrypted | |
Enforced | All NetBackup media server 9.1 or later | Data is encrypted | Data is encrypted | Data is encrypted |
Any NetBackup media server earlier than 9.1 | Operation fails | Operation fails | Operation fails | |
Note:
If DTE_IGNORE_IMAGE_MODE is set to ALWAYS, the DTE decision is as per the table - Table: DTE mode is OFF in the image.
Table: When the image DTE mode is On and the media server DTE setting on 10.0 or later is Off
Global DTE mode | Value of the DTE_IGNORE_IMAGE_MODE configuration option | ||
|---|---|---|---|
NEVER (default) | WHERE_UNSUPPORTED | ALWAYS | |
Preferred Off | Operation fails | Operation fails | Data is not encrypted |
Preferred On | Operation fails | Operation fails | Data is not encrypted |
Enforced | Operation fails | Operation fails | Operation fails |
Note:
If DTE_IGNORE_IMAGE_MODE is set to ALWAYS, the DTE decision is as per the table - Table: DTE mode is OFF in the image.
Note: