Comment on Looking for recommendations for a multi home NAS solution
truthfultemporarily@feddit.org 4 weeks ago
I want to write this in a separate post because I see many questionable suggestions:
Your scenario does not allow for a simple rsync / ZFS copy. That is because those only work with 1:many. Meaning one “true” copy that gets replicated a couple of times.
As I understand you have a many:many scenario, where any location can access and upload new data. So if you have two locations that changed the same file that day, what do you do? many:many data storage is a hard problem. Because of this a simple solution unfortunately won’t work. There is a lot of research that has gone into this for hyperscalers such as AWS GCP, Azure etc. They all basically came to the same solution, which is that they use distributed quorum based storage systems with a unified interface. Meaning everyone accesses the “same” interface and under the hood the data gets replicated 3 times. So it turns it back into a 1:many basically, with the advantages of many:many.
Bubs@lemmy.zip 4 weeks ago
I’ll keep that in mind. Since you’ve pointed it out I can definitely see the technical difficulties of a system like that.
One thought I just had: could each individual NAS unit have its own 1:many? For example, the NAS in one house controls the backup for those people and the NAS in the second house controls the backup for them. That way each household can still access their own files through a wire if needed.
truthfultemporarily@feddit.org 4 weeks ago
If you are sure that every household can only change their own data, and not that of anyone else, meaning there is only one “true copy” for every file, then yes, you can just replicate that to the other locations.