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Joined 3 years ago
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Cake day: April 27th, 2022

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  • tl;dr Duplicity does full or incremental backups, BorgBackup only does full backups but with deduplication.

    After the first backup with Duplicity, you can choose to do an incremental backup which will only store the data that has changed since the last backup. This saves time and disk space but you have to do slow full backups regularly. See question 3 of the FAQ.

    BorgBackup alway does a full backup. But it divides all data into chunks or blocks (don’t know what they call it exactly at the moment). It then hashes those chunks and stores them in a content-addressed storage layer. So it basically works like Git under the hood (plus encryption). If a chunk doesn’t change between backups it‘s already there and does not have to be stored again. A backup is always a full index of the data.

    With today‘s fast processors and hashing algorithms, a backup with Borg should be just as fast as an incremental backup with Duplicity. If you ask me deduplicated backups are just plain superior.

    Another tool that works like BorgBackup is Restic, which I prefer. Both are good choices that I would trust with my data.











  • I don‘t know what specifically you would like to know and what your background is, so I will just elaborate a bit more.

    The basic idea is that the VPS, which is not behind a NAT and has a static IP, listens on a port for WireGuard connections. You connect from the NAS to the VPS. On the NAS you configure the WireGuard connection with “PersistentKeepalive = 25”. That makes the NAS send keepalive packets every 25 seconds which should be enough to keep the connection alive, meaning that it keeps a port open in the firewall and keeps the NAT mapping alive. You now have a reliable tunnel between your VPS and your NAS even if your IP address changes at home.

    If you can get a second (public) IP address from your provider you could even give your NAS that IP address on its WireGuard interface. Then, your VPS can just route IP packets to the NAS over WireGuard. No reverse proxy needed. You should get IPv6 addresses for free. In fact, your VPS should already have at least a /64 IPv6 network for itself. For an IPv4 address you will have to pay extra. You need the reverse proxy only if you can‘t give a public IP address to your NAS.

    Edit: If you have any specific questions, feel free to ask.