This document discusses VMware vSphere Virtual Volumes (VVols), which provide a management and integration framework for external storage. VVols virtualize SAN and NAS devices by representing virtual disks natively on arrays. Key points include:
VVols are enabled through a VASA provider that communicates between vSphere and storage arrays. Storage containers on arrays house VVols and can apply storage policies. Protocol endpoints provide access between ESXi hosts and arrays. Operations like provisioning and migration can be offloaded to arrays for improved efficiency. Snapshots create point-in-time copies of VVols for tasks like backup and testing.