附上官网说的机器在线率解释
Our biggest gripe, however, centers on the company's 95% network uptime guarantee. That mark falls well below the industry standard of 99.9% uptime and allows for more than eight hours of downtime per week. Marketing Manager Markus Heimerl confirmed our suspicions that that company actually performs much higher, saying, "In reality, our uptime is much better than what we guarantee. Just like any other serious hosting provider, we offer you an uptime of 99.9% at Contabo."