In this section, we'll cover all the changes and new features in vSphere 4 that are related to storage. Together, these can result in huge efficiency, availability, and performance improvements for most customers.
Some of these include new features inherent to vSphere:
VMFS Resignature Changes
Hot Virtual Disk Expansion
Storage VMotion Changes
Improvements to the Software iSCSI Initiator
Storage Management Improvements
And some of these are new features which focus on integration with third party storage-related functionality:
VMDirectPath I/O and SR-IOV
vStorage APIs for Multipathing
Let's take a look at what's new!