Ked VAAI na EMC VMAX bezi pomalsie ako tradicna software metoda

When using VMware ESX or ESXi 4.1 versions in conjunction with EMC VMAX, vStorage APIs for Array Integration  (VAAI) Storage vMotion and cloning operations take longer to complete than when using Software (Host) Data Copy. As a result, performance degradation can occur.

Zdroj:
VAAI Storage vMotion and cloning operations run slower than software copy
http://kb.vmware.com/kb/2000755

http://virtualgeek.typepad.com/virtual_geek/2011/06/important-vmax-epack-and-vsphere-hotfix.html