LTO's combination of cheap media and expensive drives is great for people with rooms full of tapes, but it makes it pretty unattractive for everything else.
You can always feed your LTO2 tape into a LTOx drive and get the data back.
Obviously you have to be fairly patient, but for my use case (once a week on my third tier of backup) it's good and gives peace of mind that I can put in a fireproof safe.
Primary backups are still on the cloud though - S3 Glacier is a good option.
- For home use, it is likely a once-or-twice-in-a-lifetime purchase (try saying that about any other kind of media)
- You don't have to buy a brand new drive of the latest generation at sticker price; used last gen(s) gear from the enterprise works just as well.
- Perhaps most importantly, what's your data worth? I don't know about you guys, but I've got photos and documents that are irreplaceable.
Tapes beat all other storage media on $/GB, reliability over time, and arguably durability, all of which are the most important factors for offline backup.
$500 comes out in the wash over a decade or two. That's the kind of time scales we're talking about. Yes, it's not cheap and easy consumer electronics you can buy off the shelf at Walmart, but it's not unreasonable either.
Two important things to note:
1. LTO5 and onwards have a feature called LTFS, which allows you to address the tape as an ordinary file system. Before that, you were limited to purpose-built tape tools.
2. Generally, tapes can be read in drives 2 generations newer, and written in drives 1 generation newer. This rule was broken with LTO8, due to new tape composition. Starting here, it's 1 generation newer read/write.
Debian + old HPE server + tape drive + tar. Job done.
If the devices are not too large or ridiculously expensive, than it definitely makes sense to use tape as backup. Hard disks are convenient but fail at inopportune times.
Seems like a double standard wherein people are going to pretend housing multiple HDDs costs $0 (unrealistic) but won't even evaluate spending money on a tape drive.
You what doesn't get cryptolockered? Yesterday's tape sitting on the shelf.
If you can move a tape to a shelf, you can unplug a USB cable.
And to your question about having a separate machine, a Pi will be fine.
You'd lose that bet. 2 TB on LTO Ultrium tape costs under $10 (sometimes under $5 depending on volume of tapes ordered).