Review: VMware vSphere 4.1's memory compression, storage and network I/O control, along with a cluster limit increase, make the latest virtual machine platform suited for enterprise production use. - VMware vSphere 4.1 continues to lead the enterprise virtual machine platform pack. New memory management, storage and network control features enable resource pool creation that improves scale while reducing performance drags. Virtual machine management gains increased in importance in the vSp...