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Backup solutions (feddit.de)

submitted 8 months ago* (last edited 8 months ago) by harald_im_netz@feddit.de to c/selfhosted@lemmy.world

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Hands down, I'm way too late to the party with my backup-strategy, and I have no good explanation.

I have a NAS with OMV on it, and I'm in dire need to create an offsite-backup. I have an old Synology DS215j, which I'd be able to put into my parents home (hundreds of kilometers away).

I didn't find the energy to research the ways of doing what I want to do. As those are two different systems, the task seems enormous to me, without knowing what to do.

I imagined, that the Synology spins up once a day/once a week, and syncs the data and appdata (two different folder-structures on my NAS), with a certain number of snapshots.

Would you mind helping me a bit, giving me ideas how to set this up? Am I able to prepare this at home, before I bring this to my parents place?

Thank you a ton!

EDIT: Thank you all for your recommendations. I will take the time to read them thoroughly!

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[–] possiblylinux127@lemmy.zip 7 points 8 months ago (3 children)

Think ABC

One backup on site
One backup on site on a different medium
One backup offsite, preferably setup in a way that doesn't allow modification by ransomware

[–] MalReynolds@slrpnk.net 6 points 8 months ago* (last edited 8 months ago) (2 children)

One backup on site on a different medium

One offline backup.

Backup on a different medium is archaic advice unless you're willing to fork $$$ out for a tape drive system. DVDs don't cut it in the era of 20Tb HDDs. I'd argue that HDD is the only practical media currently for > 4Tb at less than enterprise scale. Backblaze might be considered a different medium I guess.

[–] harald_im_netz@feddit.de 1 points 8 months ago (1 children)

I have an HDD with... I think 4 TB laying around. What would be the best option? To just plug it into the server and leave it there?

[–] MalReynolds@slrpnk.net 1 points 8 months ago

Sure, but the point of an offline backup is to disconnect it when not in use, rendering it immune to ransomware, accidental deletions, lightning strikes etc. Plug in every week or whatever, do your backup, disconnect, sleep easy. I use an external usb hdd caddy (note that one needs a firmware update to work with bigger disks)