Externalised backup LTO
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Hi everyone,
I would like to know if it's possible to externalised backup on library tape with XOA ?
Is it in the roadmap for 2024 ?
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"It's complicated"
@florent can tell more -
@b-dietrich said in Externalised backup LTO:
Hi everyone,
I would like to know if it's possible to externalised backup on library tape with XOA ?
Is it in the roadmap for 2024 ?
I will let @olivierlambert on the backlog point. It is still planned, but there is a lot of ground work before :
- since tape can't be easily seek , so you'll have to write the backup at once no turning back to update a previously written block/metadata
- you'll have to build a catalog of tape<->backup to know which tape you'll have to use to restore, or rewrite. This is a huge change since XO don't use any database , the backup repositories are self contained : you can mount a backup repository to a new XO, and the backup will be listed . With tapes, you'll have to keep (and backup) the backup catalog. Yep , we'll need to backup the backups and ensure it's recoverable
That being said, the mirror backup feature as been built to pave the way to tape backup
For now the easiest way to do tape backup is to use full backup to a backup repository only used for this, and to mirror it to tapes. At our scale, priorities can also change if there is a big enough sponsor, that is ready to take a part of the financial load of this feature and gives us access to real world hardware and processes.
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Depending on the size of your backup repo you can copy the whole disk repo to tape with tar. So you have a desaster-backup.
You can also span mutiple tapes with tar.https://www.gnu.org/software/tar/manual/html_section/Using-Multiple-Tapes.html
