A VM on Proxmox VE (2 disks, 13 GB) running a website and a counter written to disk 5 times a second, with fsync.
In KoaVM: source scan, near-live mode, pre-flight checks, start.
On the right, an outside probe hits the website every 0.2 seconds.
Mirror copy while the VM runs: 251 seconds (sped up in the video). The website was unreachable for 10.9 seconds; the panel measured 13.1 seconds of downtime.
At the end the counter is continuous: 13,765 writes, none lost. IP 10.88.0.61 and MAC unchanged.
Leave your name and email: we'll show you access to the demo right away. You log in as an administrator: create, start and move VPSs between nodes, take backups and snapshots, try load balancers, DNS and the customer area.
Three 10-second videos
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