Show HN: Minimalist App for Backups to Any Storage

Re:Show HN: Minimalist App for Backups to Any Storage by conqrr on Sunday November 22, 2020 @10:00PM (#25183196)

The one thing that finally works for me for backup is restic (https://restic.net/). I use linux and set my home dir to a different partition, Run a daily script that uses restic to backup to backblaze. Smooth as butter and hopefully I don't need to use it. Curious what this uses under the hood, wouldn't be surprised if it was restic.

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Re:Show HN: Minimalist App for Backups to Any Storage by bimbashrestha on Sunday November 22, 2020 @11:02PM (#25183457)

It uses a custom algorithm and data format but uses a similar deduplication technique to restic. There is bit of info in the docs page about this [1].

[1]: https://blobbackup.com/docs.php#data-format

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Re:Show HN: Minimalist App for Backups to Any Storage by arkadiyt on Sunday November 22, 2020 @11:42PM (#25183662)

> Blob file names are the SHA256 hash of the unencrypted blob contents

Obviously this is needed to make block level deduplication possible, but it also means that for this "end to end encrypted" product someone can still tell whether or not you own a given file. This is probably fine for most people but worth calling out.

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Re:Show HN: Minimalist App for Backups to Any Storage by bimbashrestha on Monday November 23, 2020 @12:19AM (#25183821)

Good catch. But the SHA hash is salted per backup destination though. So you can't figure out the content from the hash alone.

EDIT: I should make note of that on the docs page really. It currently gives the impression that I'm just straight up calculating the sha of the content.

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Re:Show HN: Minimalist App for Backups to Any Storage by dddw on Monday November 23, 2020 @03:09AM (#25184566)

Restic is great indeed. Takes some time to get started, I appreciate that encryption comes first.

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