I believe there is no definitive answer to this question. It depends on your corporate backup policy that should be developed with Always ON approach in mind (please do not forget about the 3-2-1 rule
). When planning and developing a backup strategy it's recommended to assess your workloads and build some sort of an inventory where your applications are shown along with the business processes they power on.
Basically, the frequency of Incremented backups depends on your recovery goals, especially RPO and RTO you'd like to achieve within your organization.
Before going to the Active Full/Synthetic Full part of the question it's absolutely necessary to understand the difference between those two
. After that I would recommend you to take a look at our Best Practices portal section regarding Backup Methods
Due to the nature of Active Full and Synthetic Full backups most likely it won't be possible to run them very frequently, especially if you have a lot of workloads. On the other hand, you'd like to be sure that DR is possible and you are able to recover your workloads in the desired time period. That's why you should have a VBK taken/created frequently and stored securely - that's where Active Full and Synthetic Full backups are able to help, on the other hand if you use Sure Backup and have limited Repository resources
you may not require to run both Synthetic or Active Fulls.
There is a bunch of similar discussions
on our forums. Please take a quick look
and feel free to ask additional questions.
P.S. We've merged your question with a similar existing thread. Definitely recommend taking a look at the first pages.