So I have a NAS with about 15-20 TB of data on it, and I want external backup. Cloud is too expensive (would be ~ $50-100/month!) so people say to put a drive at a friend's house and use software to auto backup the NAS to that drive. Can I ENCRYPT my data so my friend can't snoop?
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Every time cloud storage of large amounts of data comes up, people say not to pay cloud fees but instead, buy an external drive or cheap NAS and...
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The original was posted on /r/datahoarder by /u/NoYoureACatLady on 2025-08-09 16:02:02+00:00.

Original Title: So I have a NAS with about 15-20 TB of data on it, and I want external backup. Cloud is too expensive (would be ~ $50-100/month!) so people say to put a drive at a friend’s house and use software to auto backup the NAS to that drive. Can I ENCRYPT my data so my friend can’t snoop?

Every time cloud storage of large amounts of data comes up, people say not to pay cloud fees but instead, buy an external drive or cheap NAS and ask a friend who has good bandwidth to let you store it on their network. Sounds great, but I have literally everything important to me on my NAS and I don’t want anyone being able to snoop into it. Is there software to accomplish the backup that has some form of encryption or password protection or something so they can’t just access my drive and snoop?

Thanks.