VAAI
Atomic Test & Set (ATS)，Hardware Assisted Locking(COMPARE_AND_WRITE ),Enables granular locking of block storage devices, accelerating performance.
Zero,Block Zeroing(WRITE_SAME),Communication mechanism for thin provisioning arrays. Used when creating VMDKs.
Clone,Full Copy, XCopy(EXTENDED_COPY),Commands the array to duplicate data in a LUN. Used for Clone and VMotion operations.
Delete,Space Reclamation(unmap),Allow thin provisioned arrays to clear unused VMFS space.
ODX
Offloaded Data Transfer just accelerates your data transfer,speeds up ‘copy and move‘ operations.
storage for VM
原文：https://www.cnblogs.com/daobang/p/13167581.html
