Minimum
1GB RAM is enough for simple rsync, restic, Borg, or Syncthing jobs.
A backup VPS should be boring, roomy, and easy to restore from. Disk, bandwidth, retention, and provider separation matter more than shiny CPU specs.
1GB RAM is enough for simple rsync, restic, Borg, or Syncthing jobs.
1-2 vCPU / 1-2GB RAM / enough disk for at least two backup generations.
Upgrade storage before CPU. Move up when deduplication, encryption, or many clients slow down.
Backup workloads are usually not CPU-heavy. You are buying disk, transfer, reliability, and a second place to restore from when the primary server fails.
Do not buy the smallest disk that fits today. Size for growth, retention, encryption, and restore testing.