Feature suggestion: Exact mirror + Reverse Incremental Backup

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tobias
Posts: 2275
Joined: Tue Mar 31, 2020 7:37 pm

Re: Feature suggestion: Exact mirror + Reverse Incremental Backup

Post by tobias »

Many thanks for the reminder.

Do we agree that this affects only large files where you want to save blocks and not re-copy the whole file every time?

Because only if you combine versioning + block level copying, you currently get Synthetic Backup, which does not keep a 1:1 copy of the latest versions.

All smaller files, you always get a 1:1 copy, and older versions in the versioning folder.
tobias
Posts: 2275
Joined: Tue Mar 31, 2020 7:37 pm

Re: Feature suggestion: Exact mirror + Reverse Incremental Backup

Post by tobias »

By the way, yes I will definitely look into it this year.

I will have more time starting in November.

I'm afraid that reverse incremental for large files will cost twice the amount of block copying, and the types of destination storages where this can work is limited. Basically only local storage and SSH/SFTP is possible, because you can't move blocks between files on typical cloud storages.
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