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Hello!! Some recent technical problems on my family's NAS gave me a big scare and finally pushed me to figure out a way to back it all up. I'm asking here specifically because I really don't know where to even starts because of the fact I've got just under 50 terabytes worth of data stored in a 7-disk RAID-5 and would prefer to keep it cheap. What are your suggestions?

Edit: thank you for all the suggestions, I'll probably be considering using Backblaze for backups, or perhaps seeing if I can scrounge up old unused disks from people I know. Thank you all again <3

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[–] FreddiesLantern@leminal.space 2 points 19 hours ago

Install W11… your data will be backed up…just not the way you want it.

[–] BCsven@lemmy.ca 1 points 1 day ago

Tape Drive?

[–] bookmeat@lemmynsfw.com 9 points 2 days ago (1 children)

First thing is decide what data you have that can be readily replaced. e.g. publicly available Linux ISOs. Then remove that from your backup strategy. You may end up with a lot less data needing backup.

[–] Scrollone@feddit.it 6 points 2 days ago

Exactly, you can just redownload them later. But pay attention if you have rare Linux ISOs, maybe because of their quality or if they're in a specific language.

[–] IronBird@lemmy.world 7 points 2 days ago

https://diskprices.com/

is the best resource for finding cheap personal digital storage, last i looked into it not sure how up-to-date that site is kept though

[–] roofuskit@lemmy.world 70 points 3 days ago (5 children)

How much of that 50 terabytes is media downloaded from the Internet? Because the cheapest way would be to trust that it's already backed up on the Internet and then use one of the usual services like B2 by Backblaze or Storagebox by Hetzner to back the rest of it up.

[–] i_stole_ur_taco@lemmy.ca 46 points 3 days ago (1 children)

This is a good compromise. When I was tight on backup space, I just had a “backup” script that ran nightly and wrote all the media file names to a text file and pushed that to my backup.

It would mean tons of redownloading if my storage array failed, but it was preferable to spending hundreds of dollars I didn't have on new hardware.

[–] roofuskit@lemmy.world 30 points 3 days ago (1 children)

If you back up the modern day Arrs databases then it's essentially the same thing and already built into the software that will redownload them for you. That's my solution. I backup my backups of those, of my home assistant, my Immich library, my Nextcloud, etc... Pirated media is, for the most part, out there backed up on several places already.

[–] Zikeji@programming.dev 7 points 3 days ago

This is what I do - well, I back up there entire container. But functionally the same.

There's only a few pieces of media that I have backed up manually due to their rarity, but even those I don't really care about.

[–] morto@piefed.social 20 points 3 days ago (3 children)

But... can we trust that we will have stuff available on the internet in the future?

[–] BootLoop@sh.itjust.works 14 points 3 days ago

All my TV shows and movies, I don't bother. But my 150gb mp3 library I keep backed up because it's much smaller and I know some of that stuff is not readily available online.

[–] bridgeenjoyer@sh.itjust.works 9 points 3 days ago

Exactly. Regimes want to kill this as fast as they can to milk us of every penny witghr their shitty services. I dont trust any sites will stay up.

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[–] Inkstainthebat@pawb.social 7 points 3 days ago (1 children)

It's kinda complicated because a good chunk of that is data that is technically redownloadable, but has been tweaked (most of my movies are a multiplexed high-res eng version merged with audio from lower-res dub.) Either way, thank you for the suggestions

[–] roofuskit@lemmy.world 9 points 2 days ago* (last edited 2 days ago)

I suggest making a script that uses existing software (ie mkvtoolnix) to extract the dubbed audio and then backing that up and l leaving the high quality video to the Web to backup.

I know it's less than ideal but you can automate both extracting it and muxing it back in. It may take some effort to setup, but it's well worth the huge recurring costs incurred from backing up that amount of data.

Just an idea to consider.

[–] RamRabbit@lemmy.world 17 points 3 days ago* (last edited 3 days ago)

Yeah, if 90% of that is movies/shows, then you really don't need a backup of that as you can always re-download it. Then you have a 5TB backup problem which is much cheaper to solve.

[–] irmadlad@lemmy.world 7 points 3 days ago (1 children)

Because the cheapest way would be to trust that it’s already backed up on the Internet

That's a shit load of downloading. LOL wow!

[–] roofuskit@lemmy.world 18 points 3 days ago* (last edited 3 days ago) (1 children)

I have 45TB of data and the majority of that is definitely downloaded media. They call us data hoarders for a reason.

[–] irmadlad@lemmy.world 7 points 3 days ago (2 children)

Oh sure I understand data hoarding. I was just thinking, to restore 50 tb from the internet is going to take more than a fortnight.

[–] roofuskit@lemmy.world 15 points 3 days ago

It's literally downloading the same amount of data you would be backing up, and you won't be charged hourly for downloading it from the internet as opposed to a large storage service.

[–] Appoxo@lemmy.dbzer0.com 3 points 2 days ago

Imagine having to back up 50Tb to S3 :p
Not everyone has a symmetric connection.

[–] badbytes@lemmy.world 24 points 3 days ago (4 children)

Tape is still the cheapest and best archival medium. Drives are expensive, but the actual tape is cheap. But 50TB might not be enough to justify.

[–] Appoxo@lemmy.dbzer0.com 7 points 2 days ago

The tape drive costs more or less 2000€ (without VAT), the tapes cost about 80-100 for a 15tb drive (and compressed capacity doesnt count as the to be backed up data is probably not just a database or text.

Don't think there are much economic options beside finding the cheapest S3 storage or a secondary backup server.

[–] androidul@lemmy.world 9 points 3 days ago* (last edited 3 days ago) (1 children)

I just came here to say exactly the same thing. Tapes for the long term, but you also have to take reaaaaaly good care of how they’re stored ie. don’t store them under the kitchen sink in your bathroom

[–] Mad_Punda@feddit.org 7 points 2 days ago

My kitchen sink in the kitchen is fine though? What about the bathroom sink?

/s

[–] cm0002@suppo.fi 12 points 3 days ago* (last edited 3 days ago)

I'm heavily researching tape for my data, I currently sit around 400TBs Total but only around 200 in data that id actually want to backup and can't just redownload.

Iirc the break even point 100-150TB

ETA: that break even point might actually be lower now that I think about it since that number is probably outdated when I did it and doesn't account for the shortage crap

[–] RamRabbit@lemmy.world 32 points 3 days ago* (last edited 3 days ago) (2 children)

My suggestion: Buy 3x 28TB drives. Mirror the data to them. Then move them off site.

The off-site location could either be a family member's home where you can then sync to the drives over the internet. Or in a PO box nearby that you retrieve them from time to time to re-sync the data.

[–] Onomatopoeia@lemmy.cafe 3 points 2 days ago (1 children)

I would definitely keep them warm, as in a running machine.

Drives on a shelf die more often than always-on drives.

[–] Scrollone@feddit.it 1 points 2 days ago (1 children)

Really? Do you have any source on that?

If it's true, I bet it's only if they're actually running without ever spinning down.

[–] Onomatopoeia@lemmy.cafe 1 points 1 day ago* (last edited 23 hours ago) (1 children)

Nothng official, sorry, wish I did!

Mostly personal experience. But that experience is also shared among a group of peers and friends in the SMB space where their clients think they can keep stuff on externals in an office safe only to find they've gone tits up nearly every time they pull them out a couple years later. And not the enclosures, the drives themselves - they all have external drive readers for just these kinds of circumstances.

In the enterprise you'd get laughed out of a datacenter for even suggesting cold drives for anything. Of course that's based around simple bit rot concerns, and why file systems like ZFS use a methodology to test/verify bits on a regular basis.

If nothing else, that bit rot should be enough of a reason to not store data on cold drives. It's not what drives were designed (or tested) to do.

Edit: Everything I've read over the years suggests failures happen as much from things like lubricants hardening from sitting as from bit rot. I've experienced both. I've seen drives that spin up after ten years but have numerous data errors, and drives that just won't spin up, while their counterparts that have run nearly continuously are fine (well, their bit-rot was caught by the OS and mitigated). With a running drive you have monitoring, so you know the state.

[–] Scrollone@feddit.it 1 points 1 day ago

But what about Amazon Glacier? That's exactly what they do. Cheap storage on cold drives.

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[–] dieTasse@feddit.org 4 points 2 days ago (1 children)

Nobody said this here but storj is one of the cheapest storage out there and it's has redundancy and is distributed. And if you have truenas, it's kinda baked right in. They had some hiccups when communicating changes to the community, but overall nice folks.

[–] 01189998819991197253@infosec.pub 1 points 2 days ago (1 children)

$15/TB (I'm assuming USD) is incredible!

[–] dieTasse@feddit.org 2 points 2 days ago

I am actualy paying about 5 bucks per terabyte, but I think I am still on old tarif... Oh wait they still offer it, its now called active archive and its 6 dollars per terabyte.

[–] irmadlad@lemmy.world 14 points 3 days ago (2 children)

Backblaze personal is about the cheapest I know of: $99 per year unlimited. Caveats would be that the drives have to be physically connected to the computer doing the backup. Additionally, should you ever need to restore the backup, the best way would be to buy a 10 tb drive from Backblaze, restore the data, then send the drive back for a full refund x 5. Restoring 50 tb online would be excruciating.

[–] Scrollone@feddit.it 2 points 2 days ago (1 children)

But isn't it available only for Windows/macOS?

[–] irmadlad@lemmy.world 1 points 2 days ago

Yes, however you could run it in Wine, or create a Windows VM.

[–] Davel23@fedia.io 11 points 3 days ago (1 children)

I'm currently backing up my NAS to Backblaze Personal by mounting the drives using Dokany. They appear as local drives and the Backblaze client accepts them for backup.

[–] irmadlad@lemmy.world 7 points 3 days ago

That's worth a bookmark. Thanks for the share.

[–] Alvaro@lemmy.blahaj.zone 12 points 3 days ago

Cold storage solutions would be cheapest if you don't need to access it often, if you do then Backblaze b2.

Lastly you could do your own backup (drives sitting at a friends of family's place?)

[–] neidu3@sh.itjust.works 8 points 3 days ago* (last edited 3 days ago)

Is it data you would trust in the hands of random strangers on the internet? If so, I can easily store 50TB for you, as long as it's temporary.

Oh, and I have various storage solutions in various jurisdictions, so if you have any preferences as to places you do NOT want to store it, that's something you need to hilight.

[–] just_another_person@lemmy.world 9 points 3 days ago (7 children)

First: there is no cheap way to back this amount of data up. AWS Glacier would be about $200/mo, PLUS bandwidth transfer charges, which would be something like $500. R2 would be about $750/mo, no transfer charges. So assume that most companies with some sort of whacky, competing product would be billed by either of these companies with you as a consumer, and you can figure out how this is the baseline of what you'll be getting charged from them.

50TB of what? If it's just readily available stuff you can download again, skip backing that up. Only keep personal effects, and see how much you can reduce this number by.

[–] utjebe@reddthat.com 2 points 2 days ago

Damn, I would have thought that glacier would be cheaper and they would claw your eyes out on egress and access.

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[–] Decronym@lemmy.decronym.xyz 6 points 3 days ago* (last edited 1 day ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters More Letters
NFS Network File System, a Unix-based file-sharing protocol known for performance and efficiency
SATA Serial AT Attachment interface for mass storage
SFTP Secure File Transfer Protocol for encrypted file transfer, over SSH
SMB Server Message Block protocol for file and printer sharing; Windows-native
SSH Secure Shell for remote terminal access
ZFS Solaris/Linux filesystem focusing on data integrity

5 acronyms in this thread; the most compressed thread commented on today has 15 acronyms.

[Thread #995 for this comm, first seen 12th Jan 2026, 03:05] [FAQ] [Full list] [Contact] [Source code]

[–] degenerate_neutron_matter@fedia.io 7 points 3 days ago (1 children)

Sort your data into stuff you absolutely need to keep (personal files and such) and stuff you'd be okay with losing (less important files, device backups, downloads you can redownload, etc). Then only back up the former. As for backup medium, ServerPartDeals often has some pretty good deals on storage; they were selling refurbished 12TB drives for $80 a pop a while back.

[–] cmnybo@discuss.tchncs.de 6 points 3 days ago

They haven't been selling anything that cheap since the AI driven hard drive shortage. A refurbished 12TB drive is around $200 now.

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