I’m not sure that everyone would agree that Storage DRS is the most exciting new feature in vSphere 5, but it’s certainly in the top 10. Here’s Duncan Epping’s overview of Storage DRS and datastore clusters. Nice video too!
Moving cold virtual machine images from system to system, or even across great distances, is one of the main selling points of server virtualization. But it becomes much more difficult to manage movement of virtual machines that are still running, especially outside cluster or across WAN links. When talking about virtual machine mobility, it is important to consider what is being moved, the state it is in, and where it is going.
The time has come to take sides on the core question of storage for virtual servers: Do you want storage intelligence to live in the hypervisor or the array? Most administrators are already lining up on one side or the other, unintentionally casting their vote while the rest flounder. But the storage industry must wake up and embrace the divide.
One of the most interesting areas covered at VMworld 2010 was the new storage features in vSphere 4.1. There are two main features I want to cover in depth as I feel they are important indicators of the direction that storage for VMware is heading: Storage I/O Control (SIOC) and vStorage API for Array Integration (VAAI).