datahoarder
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.
-- 5-4-3-2-1-bang from this thread
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If you have the space and budget, you should buy a cheap 4-bay NAS and use that as a backup drive over the network. That will remove a lot of the manual effort needed for a backup, offer future expandability and support raid options that protect the data against a hard drive failure.
Alternatively, you could have a second drive and use LVM to create a partition that extends across both drives, so it I'll show up as one big drive that you can rsync to. The downsides are that you'll need both drives attached to be able to mount it, and if either drive dies, you won't be able to access the data.
That downside is so bad, I wouldn't even suggest that as an option.
It's just raid 0? But yes, a nas is the ideal solution.