narramissic writes: "A survey of 3000 customers of hosting company Rackspace found that 87% were unwilling to share a server with other customers, with a majority of those surveyed saying that virtualization is not ready for mission-critical apps. Customers cited security and performance as top concerns. And Rackspace's platform products director Nicholas Keller agrees. From the ITworld article:
"'We believe we have the right technology, people and processes to mitigate the security risk,' he said. 'But on performance, we agree with our customers — the technology is still maturing.'
In particular, he claimed that today's hypervisors don't have the technology to traffic-shape their network usage, so having several VMs contending for the same heavily-used network connection can be a problem.