infra/scripts/anca-elements-mirror.timer

[Unit]
Description=Weekly anca-elements mirror to /mnt/backup

[Timer]
OnCalendar=Mon *-*-* 04:00:00
Persistent=true
RandomizedDelaySec=15min

[Install]
WantedBy=timers.target
anca-elements: weekly local mirror sdc → sda (replaces Synology as 2nd copy) Synology is being removed as a host for the Anca/Elements archive (770G). /srv/nfs/anca-elements on PVE becomes the source of truth; sda /mnt/backup/anca-elements becomes the single-disk-failure mirror. No offsite for this archive — by design. - scripts/anca-elements-mirror.sh: rsync -rlt --delete -H, idempotent, pushes anca_elements_mirror_last_{run_timestamp,status,bytes} to Pushgateway, lockfile in /run, SIGTERM-safe (status=2 on abort). - .service: oneshot, Nice=10, IOSchedulingClass=idle, 5h timeout. - .timer: weekly Mon 04:00, Persistent=true, 15-min randomised delay. Deployed to PVE host; timer enabled; initial 770G sync running in background. Synology original to be deleted after first run completes and parity is verified. docs/architecture/backup-dr.md: documents Layer 3a + updated path exclusion rationale (PVE is now upstream, not downstream). 2026-05-24 11:51:52 +00:00			`[Unit]`
			`Description=Weekly anca-elements mirror to /mnt/backup`

			`[Timer]`
			`OnCalendar=Mon --* 04:00:00`
			`Persistent=true`
			`RandomizedDelaySec=15min`

			`[Install]`
			`WantedBy=timers.target`