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Backing up across machines with low free space? (lemmy.nocturnal.garden)
submitted 3 months ago by to c/selfhosting@slrpnk.net
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I run some services on machine A. I want to backup the data to machine B. It's around 40 gigabytes in thousands of small files. I would prefer to compress the data, but there's not enough space on machine A to keep the data twice (original + tar archive). I would like to avoid copying that many files via scp/rsync since it's taking forever and a bit fragile.

Any solutions on how to solve this? Is it possible to compress live on machine A and stream into the archive on machine B without the need to keep the big archive file on A?

Eventually, it's supposed to be automated and B has like the last 3 dailys, 1 weekly, 1 montly.

B can ssh into A.

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[–] [S] 1 point 3 months ago* (last edited 3 months ago) (4 children)

It's a VPS and I don't want to increase the monthly cost - in fact I want to decrease it by disabling the backups the hoster offers. Machine B is my NAS at home.

Of course, incremental would be preferable, but I'm not sure how that would work in that constellation.

I wonder if I can compress to B directly. Maybe I could mount a volume from B into A via wireguard and nfs, now that I think about it.

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  • [–] 2 points 3 months ago (3 children)

    Do you have unlimited data transfer with your vps? Transferring 40Gb three times each and every day is quite some traffic.

    Why not host it at home then? I bought a used lenovo thinkcenter (m720q on top of my head) for 75€ It uses only 35 watt, it has 750 Gb storage and I only added some RAM.

    I pay 1€ per month for a fixed public ip to avoid ddns. My NAS is at a family member (over vpn to home) for offsite backups.

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  • [–] [S] 2 points 3 months ago (2 children)

    I do have a someserver, but it's a fediverse instance with around 60 monthly active users, and the server provider is more reliable than my ISP at home, so any downtime has a bit more impact. There's also another admin who needs access. Not saying never, but at the moment I'm just looking for a different backup solution, moving the whole thing has some more aspects to consider.

    The data would only be copied once a day. I have to check the limits though, good point.

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