VMware's vSphere 6 pays more attention to high availability and large deployment than prior editions—with a kick to the throttle in terms of overall speed of scale, not just size of scale. This comes with a mixture of incremental upgrades, and a bit of administrative thoughtfulness.

This latest cut of VMware is almost finger-snappy fast. What really got our attention, however, is that it understands faults, more of them, more quickly, with more options. It also doesn’t require manually installing everything. It’s not completely perfect, but the defects were minor.

Were we to offer a single reason to plunk down upgrade money, it would be the advent of high availability and fault tolerance failover options plus the enhanced speed over VMware 5.