From forever incremental to forever forward incremental

[marius roma]

I want co convert some existing "forever incremental" backup jobs to "forever forward incremental".
As I see from the manual it looks that I must simply remove the "Create active full backup periodically" check, is it correct?
What is supposed to happen if I apply the change?
Can I safely apply the change to existing jobs without losing existing recovery points?
Regards
marius

[Shestakov]

Hello Marius,

As I see from the manual it looks that I must simply remove the "Create active full backup periodically" check, is it correct?

Correct.

What is supposed to happen if I apply the change?
Can I safely apply the change to existing jobs without losing existing recovery points?

The chain will act as forever incremental.
Yes. Older backups will be deleted according to their retention policy.
Thanks!

[marius roma]

I made some tests and it looks to work as expected.
Let me ask an additional question: based on my lab tests the behavior of forever forward incremental does not look so different from reverse incremental.
I read that the use of reverse incremental is discouraged on deduplicating repositories: is it the same for forever forward incremental or can I use it on deduplicating repositories?
Regards
Marius

[Shestakov]

Yes, you are going to have performance degradation during synthetic activity (think random I/O) on any deduplicating storage.
However despite both reverse and forever forward modes us 3 IOPS per byte Forward Incremental-Forever mode is more preferable.
Thanks