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Kopia: Fast and secure open-source backup software

kopia.io

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Re: Kopia: Fast and secure open-source backup software

#51

> Kopia does not currently support cloud storage that provides delayed access to your files – namely, archive storage such as Amazon Glacier Deep Archive. Do not try it; things will break. Sigh… and unfortunately all too common for there to be no cold storage support.

However, you should be able to use Glacier Instant Access. It will get you a bunch of the way there.

Re: Kopia: Fast and secure open-source backup software

#52
post #4

Any comparisons to Restic? Looks like basically the same thing but with a GUI available. Edit: Found this very ad-hoc "benchmark" from over a year ago claiming that Kopia managed significantly better deduplication than Restic after several backups (what took Restic 2.2GB, Kopia did in https://github.com/kopia/kopia/issues/1809#issuecomment-1067... Edit Edit: Never mind, this benchmark was from before Restic supported…

One thing I will mention is that other backup projects have switched from Restic to Kopia. Velero from VMware comes to mind.

Re: Kopia: Fast and secure open-source backup software

#53
post #32

The state of backup tech is surprisingly bad, and runs OS deep. Even with modern solutions like restic, you have no guarantee of a consistent backup[0] unless you pair it with a filesystem that supports snapshots like btrfs, ZFS, etc, which basically no one other than power users are even aware of. Interestingly, Windows ships snapshot support by default[1], but you need admin privileges to use it. Also, it's unclear…

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Re: Kopia: Fast and secure open-source backup software

#54

CTRL+F "tape" "lto" - 0 results. I know that Tape Backups are not hip and sexy, but CloudNordic showed us just last month why they still matter even in 2023 and beyond, so you'd definitely want to look at an additional solution for your large servers, with a proper rotation/retention strategy (e.g., GFS). You _need_ offline backups, if you think you don't, you just got lucky for now - or have data that can be recreat…

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Re: Kopia: Fast and secure open-source backup software

#55
post #32

The state of backup tech is surprisingly bad, and runs OS deep. Even with modern solutions like restic, you have no guarantee of a consistent backup[0] unless you pair it with a filesystem that supports snapshots like btrfs, ZFS, etc, which basically no one other than power users are even aware of. Interestingly, Windows ships snapshot support by default[1], but you need admin privileges to use it. Also, it's unclear…

Filesystem snapshot for database is not different than database crash. Databases are designed to handle crashes well (WAL etc.).

Unfortunately, this is not true. You need to grab all the DB files (WAL, etc.) in a consistent manner. You can't grab them while writes are in progress. There are ways though. Look at what Kanister does with its recipes to get consistent DB snapshots to get a sense of the complexities need to do it "right."

Re: Kopia: Fast and secure open-source backup software

#56
Where does one even acquire a VPS that makes this worth it? Most VPS pricing I've looked at is significantly more expensive than something like BackBlaze or IDrive. So what even is the point of rolling your own backups if you can't get cheap terrabytes in the cloud? And no I'm not going to consider something like S3 because Amazon's pricing is obnoxious and confusing. Edit: $70 / month for 3TB of S3. Significantly more expensive than all of the managed SaaS backup providers.

Re: Kopia: Fast and secure open-source backup software

#57
post #9

Earlier quoted context omitted.

Kopia also means a copy in Polish and the author is Polish. The first paragraph in the software's Github page also confirms the Polish origin of the name: https://github.com/kopia/kopia/ Tangentially, as far as OSS names of Polish go, kopia is pretty tame. A popular deduplicating app is named czkawka (hiccup). Now that choice is just mean towards non-Polish speakers. :)

Oh my, this is a fantastic view of life - from the czkawka github page: Czkawka is a Polish word which means hiccup. I chose this name because I wanted to hear people speaking other languages pronounce it, so feel free to spell it the way you want. This name is not as bad as it seems, because I was also thinking about using words like żółć, gżegżółka or żołądź

This sounds very much in the spirit of Grzegorz Brzęczyszczykiewicz[0]

[0] https://m.youtube.com/watch?v=AfKZclMWS1U

Re: Kopia: Fast and secure open-source backup software

#60

Compared to Veeam how is it?

Very different products and can't compare them. Veeam is enterprise-grade and used for a larger variety of mission-critical workloads. Kopia is meant for end-user backups (though folks use it for a bunch of other things too).

Note that Veeam contributes to Kopia - https://www.veeam.com/sys451

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