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How to set up backup for media files on Proxmox? (piefed.zip)
submitted 1 year ago* (last edited 11 months ago) by 1Fuji2Taka3Nasubi@piefed.zip to c/selfhosted@lemmy.world
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I am trying to set up a home server. Here is how I'm planning to do it:

/dev/nvme0n1 SSD, Proxmox, VMs & CTs
/dev/sda HDD, Media library
/dev/sdb HDD, Backup

I've installed Proxmox on the NVMe SSD and created a few VMs and CTs to play with.

I have also partitioned /dev/sda and created a ZFS partition on /dev/sda1, made a pool /pool and a datastore /pool/data.

I plan to put media files on /pool/data, bind mount it on a container and run Jellyfin to serve them.

I can schedule backup jobs for the VMs and CTs themselves on Proxmox, but I'm not sure how to backup the media files on /pool/data to /dev/sdb.

  1. How would one go about setting up such backups? Do I need to setup something like a cronjob with rsync or is there some easier ready-made solution? Ideally it'd be something like Proxmox's VM backup jobs that let me prune and keep some copies daily / weekly / monthly / yearly.

  2. What filesystem should I use for the backup drive / partition? Is there advantage of using ZFS to backup ZFS?

  3. Can ZFS snapshots be used on /pool/data for additional protection? If so how do I set up, for example, automatic daily snapshots? Do snapshots take up little space if the files rarely change?

Thanks.

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[–] marty_mcfly@piefed.social 2 points 1 year ago

Here is what I have on a cheap tower server:

  • Proxmox OS on mirrored zfs pool on two internal SSDs.
  • Data pool on mirrored zfs pool on two internal NVMEs.
  • Externally attached NVMe via usb3.1.

When I spin up VMs, they are on the internal NVMe zpool. They are backed up to the external NVMe.

I have performed disaster recovery of my Jellyfin VM and other VMs from the external NVMe to internal NVMe. When the server dies, I can fix it or buy a new server and restore the VMs from the external NVMe.

Hope this helps!