How to set up like this with features -

1. Forever full backups/DeDuplication
2. Option Delete changes older than x.
3. How to Only backup Select Data, like only personal data,
4. Save a "Ghost" for other data (internet data not personal) which is only Filename, Metadata and Folder-Structure.
5. "File Change Tracker" to see summary of what files are moved/deleted/renamed.
6. "File History" where I see previous version of files.
7. Config from inside folders for disks (not OS) with e.g..backupconfigfile containing e.g. backup=1, or have select file backuped/not-backed-up.

To Backup

• External and Internal Disk (files) and OSes to backup,
• Backup select data from Disks,
• all separately backup-ed to the same backup disk, .

Dead but FOSS

https://github.com/zmanda/amanda

https://en.wikipedia.org/wiki/List/_of/_backup/_software

Freemium

Backup and Imaging

Disk Imaging

Sync Software

Cloud

https://www.reddit.com/r/Backup/wiki/index/cloud/_backup/_services/backblaze/

Info

~~Incremental backup method, where I only make full backups once ,~~

~~Question - as i understand from "grandfather,father,son" method - that Full backups are still necessary when using snapshots/incremental backups, why is that ?~~

"deduplication" is of 2 types

Data/Block de-duplication - tech to reduce amount storage required. This breaks files upon into chunks and creates a DB. Data de-duplication is influenced heavily by data type. Data de-duplication is a waste of time with compressed multimedia and encrypted data. Data de-duplication is often incorporated into backup products and can exist in independently, its built into some file system types (Windows server and some Linux).

File deduplication - Removing identical files. by comparing the whole file. Homelabers and home users are more worried about this than commercial environments. In commercial environments users and projects are usually allocated a quota storage space and its up to them how they want to manage it.

Incrementals Forever and Synthetic Full Backup - incremental may/not have de-duplication. They can also use Change Block Tracking (CBT) to save a lot of backup time.

"Forever Full" are simply a variation on synthetic full backups with data deduplication and CBT being optional.

Data deduplication occurs when you:

• Have multiple copies of the same data across multiple machines e.g. the operating system files of the computers you are backing up.
• Data that has not changed since you last successive backup. This includes files that have partially changed, only new unique data is added to the dedupe database/repository. Old Post about methodology - https://lemmy.ml/post/44433232