this post was submitted on 31 Aug 2025
23 points (92.6% liked)

Selfhosted

60114 readers
876 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

  1. Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.

  2. No spam.

  3. Posts here are to be centered around self-hosting. Please ensure it is clear in your post how it relates to self-hosting.

  4. Don't duplicate the full text of your blog or git here. Just post the link for folks to click.

  5. Submission headline should match the article title.

  6. No trolling.

  7. Promotion posts require your active participation in selfhosting or related communities, or the post will be removed. No more than 10% of your posts or comments may be self-promotional, or your post will be removed. F/LOSS Exception: If your post is about a project that is completely open source & can be self-hosted in full without payment, and your account is at least 7 days old, your post is exempt from this rule as long as you continue to engage in comments.

Resources:

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 3 years ago
MODERATORS
ruud@lemmy.world
Loki@lemmy.world
CannaVet@lemmy.world
devve@lemmy.world
ayyy@sh.itjust.works
curbstickle@anarchist.nexus
curbstickle_lw@lemmy.world
23
Pi NAS for multi-location backups (sh.itjust.works)
submitted 9 months ago* (last edited 9 months ago) by mnemonicmonkeys@sh.itjust.works to c/selfhosted@lemmy.world
15 comments fedilink hide all child comments
 

Over the past few months I've been thinking about what would be the best way to help me and my parents improve privacy and data storage.

With all the posts with cluster PC's recently, I'm wondering if the best option is to make a couple of NAS's with Raspberry Pi's with RAID, keep one at my place and another at my parents' house, and syncing their data with 2 private folders: one for myself and one for my parents.

But that opens up a few more questions. How to sync the data to match? Syncthing? Kubernetes? Should I go ahead and add Nextcloud to the Pi's? Should I make the Pi's expandable so other services can be added later, or plan to hook up a separate Pi to handle that? What else could I be missing?

you are viewing a single comment's thread
view the rest of the comments
[–] suicidaleggroll@lemmy.world 3 points 9 months ago

You seem to be missing/ignoring that sync will protect against data loss from lost/broken devices. When that happens, those connections are severed with no deletions propagating through them.

Only if you very carefully architect things to protect against it. I have absolutey seen instances where a drive had a fault and wouldn't mount on the source, and a few hours later a poorly designed backup script saw the empty mount location on the source and deleted the entire backup. You have to be VERY CAREFUL when using a sync system as a backup. I don't use syncthing, but if it can be configured to do incremental backups with versioning then you should absolutely choose that option.

You have to be joking with this. There is no way I’m letting that tracker-filled ransomware near any of my computers.

I believe he was talking about a mini PC with a single drive, not Microsoft's "One Drive".

Simple mirroring doesn’t protect against bitrot. RAID 6 does.

Lots wrong with this statement. The way you protect against bitrot is with block-level checksumming, such as what you get natively with ZFS. You can get bitrot protection with a single drive that way. It can't auto-recover, but it'll catch the error and flag the affected file so you can replace it with a clean copy from another source at your earliest convenience. If you do want it to auto-recover, you simply need any level of redundancy. Mirror, RAIDZ1, RAIDZ2, etc. would all be able to clean the error automatically.