Backup solutions

Submitted ⁨⁨8⁩ ⁨months⁩ ago⁩ by ⁨harald_im_netz@feddit.de⁩ to ⁨selfhosted@lemmy.world⁩

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!

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hydrogen@lemmy.ml ⁨8⁩ ⁨months⁩ ago
There are a lot of different methodes you could try. I think the easiest is to connect both systems with a (mesh)VPN like Wireguard, ZeroTier or Tailscale. Then you can simply copy stuff over using rsync -a (archive mode) with a cronjob or using special tools like Borg backup, kopia, etc

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- lemmyvore@feddit.nl ⁨8⁩ ⁨months⁩ ago
  I second this. But keep in mind the difference between a sync tool like rsync, syncthing etc. and a dedicated backup tool like borg.
  
  A sync tool is basically a fancy copy. It copies what is there now. It’s a bit smarter than a copy in that it can avoid copying unmodified files, can optionally delete files that are no longer there, and has include/exclude patterns.
  
  But a sync tool doesn’t preserve older versions, and doesn’t do deduplication, compression, encryption and so on. A backup tool does.
  
  Both can be useful, as long as you use them properly. For example I gave my dad a Syncthing dir on his laptop that syncs whatever happens in that dir, over Tailscale, to my NAS. But the dir on the NAS gets backed up with Borg once a day.
  
  The Syncthing protects against problems like the laptop dies, gets dropped, gets stolen etc. The Borg backup protects against deleted and modified files. Neither of them is of any use if the user didn’t put something in the dir to begin with.
  
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  - observantTrapezium@lemmy.ca ⁨8⁩ ⁨months⁩ ago
    Borg is great.
    
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possiblylinux127@lemmy.zip ⁨8⁩ ⁨months⁩ ago
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
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- MalReynolds@slrpnk.net ⁨8⁩ ⁨months⁩ ago
  
  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.
  
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  - harald_im_netz@feddit.de ⁨8⁩ ⁨months⁩ ago
    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?
    
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crony@lemmy.cronyakatsuki.xyz ⁨8⁩ ⁨months⁩ ago
I personally do a restic backup on my server (I habe a dedicated hetzner server), and keep a backup on the server itself, and do a backup to a backblaze bucket for an offsite backup.

I also have a restic check job run every week, that reads 10% of the random data making sure everything is fine and working correctly.

For my local machine I do the same but additionally backup also to an usb drive for a 3-2-1 backup solution.

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Darkassassin07@lemmy.ca ⁨8⁩ ⁨months⁩ ago
After reading this thread and a few other similar ones, I tried out BorgBackup and have been massively impressed with it’s efficiency.

Data that hasn’t changed, is stored under a different location, or otherwise is identical to what’s already stored in the backup repository (both in the backup currently being created and all historical backups) isn’t replicated. Only the information required to link that existing data to its doppelgangers is stored.

The original set of data I’ve got being backed up is around 270gb: I currently have 13 backups of it. Raw; thats 3.78tb of data. After just compression using zlib; that’s down to 1.56tb. But the incredible bit is after de-duplication (the part described in the above paragraph), the raw data stored on disk for all 13 of those backups: 67.9gb.

I can mount any one of those 13 backups to the filesystem, or just extract any of 3.78tb of files directly from that backup repository of just 67.9gb of data.

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ptman@sopuli.xyz ⁨8⁩ ⁨months⁩ ago
I tried to compare some backup solutions a while back: hedgedoc.ptman.name/kket4uo9RLiJRnOhkCzvWw#

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- harald_im_netz@feddit.de ⁨8⁩ ⁨months⁩ ago
  Thank you, I’ve downloaded the .md for my Obsidian notes :-) Great starting point!
  
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Decronym@lemmy.decronym.xyz ⁨8⁩ ⁨months⁩ ago
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

Fewer Letters More Letters

NAS Network-Attached Storage

UDP User Datagram Protocol, for real-time communications

VPN Virtual Private Network

[Thread #578 for this sub, first seen 6th Mar 2024, 12:55] [FAQ] [Full list] [Contact] [Source code]

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Fewer Letters	More Letters
NAS	Network-Attached Storage
UDP	User Datagram Protocol, for real-time communications
VPN	Virtual Private Network