[Unit]
Description=Daily backup of ~/Server to the home server

[Timer]
# MUST finish before the home server's cron.daily fires zfs-auto-snapshot, which has
# been landing between 03:22 and 03:52. If the snapshot catches a half-finished rsync,
# that day's history entry is a partial backup. 01:00 leaves >2h of margin; the first
# full run took well under that and daily deltas are far smaller.
OnCalendar=*-*-* 01:00:00
# Small jitter only -- must not push us into the snapshot window.
RandomizedDelaySec=10m
# If the VPS was down at 01:00, run once after it comes back rather than
# silently skipping a day.
Persistent=true
Unit=server-backup.service

[Install]
WantedBy=timers.target