this post was submitted on 13 Apr 2025
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datahoarder

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Who are we?

We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.

We are one. We are legion. And we're trying really hard not to forget.

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I'm thinking of backing all of my family's digital assets up. It includes less than 4 TB of information. Most are redundant video files that are in old encodings or not encoded at all and there are a lot of duplicate images and old documents. I'm gonna clean this stuff up with a bash script and some good old manual review, but first I need to do some pre-planning.

  • What's the cheapest and most flexible NAS I can make from eBay or local? What kind of processors and what motherboard features?
  • What separate guides should I follow to source the drives? What RAID?
  • What backup style should I follow? How many cold copies? How do I even handle the event of a fire?

I intend to do some of this research on my own since no one answer is fully representative but am appreciative of any leads.

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[–] [email protected] 4 points 2 weeks ago (1 children)
  • What's the cheapest and most flexible NAS I can make from eBay or local? What kind of processors and what motherboard features?

cheapest is some decade old oem desktop ideally with as many sata ports as possible. the most flexible is whatever gives the most pci-e lane bandwith as they can be converted to most things. processor features most dont matter unless the NAS is also a media server, which you want an igpu that can do hardware encoding to whatever usecase you have.

  • What separate guides should I follow to source the drives? What RAID?

i dont have a reccomendation on drive, but if you value drive redundancy, raid 1 (mirror) or raid 6(if youre using zfs, that would be zfs z2, this layout is basically requires 3 drives to die in order to lose data)

  • What backup style should I follow? How many cold copies? How do I even handle the event of a fire?

its on you on how you want to handle offsite backups be it cloud, or you having a clone that you manually backup offsite. pick whatever suits your needs

[–] [email protected] 1 points 1 week ago (1 children)

zfs z2, this layout is basically requires 3 drives to die in order to lose data)

RAIDZ2 has 2 parity disks and thus can only withstand 2 drive failures, no?

[–] [email protected] 1 points 1 week ago* (last edited 1 week ago) (1 children)

can wirhstand 2, thus requires 3 drives to die to lose data, theyre the same thing.

[–] [email protected] 1 points 1 week ago

Gotcha. I understand now re-reading your post, that's a valid way of phrasing it.