Hello selfhosted lemmy community!
I’ve been running the following setup for a while now but my backup drive is running out of space.
- 2x 4TB drives in a zfs mirror
- 1x 1TB backup drive
- 1x 256GB boot ssd
The zfs pool is rsynced to the backup drive nightly which is then uploaded to blackblaze.
As I’m using more than 1 TB in the zfs pool, it can’t be backed up anymore. I’m looking for some advice on how to reuse the same drives in a better configuration.
My current idea is to get rid of the zfs pool, use one of the 4TB drives as the main drive and one as the backup one. The 1TB drive will then not be used anymore.
Appreciate any advice or feedback!
ZFS is not a backup, but explicitly choosing to sacrifice the redundancy you have seems like the wrong move. By taking them out of mirroring you are guaranteed to only have what is in your backup in the case of failure, with no chance of recovery. IMO the correct answer is either to buy larger drives for backups or have less data (sacrilege).
How I have solved it for now is to keep using the current system but as a large part of the data is already a backup of devices around the house, those will only get backed up to blackblaze and not to the 1TB drive. All other files and server configs can then be stored in on that drive.