Read “StarWind Virtual SAN ODX (Off-loaded Data Transfer) Configuration and Performance Tuning Guide”
This document is for experienced StarWind users and Microsoft administrators, who want to decrease the workload caused on the network by using ODX. It reveals how exactly one can check if ODX is working properly and how productive it is.
ODX (Offloaded Data Transfers) is a feature that allows speeding up certain copy and move operations by allowing them to be performed on the storage, instead of running it between the client and storage through the network. The servers only send each other corresponding commands and service info, while data exchange is performed between storages themselves. As a result, creation and copying of data happens much faster without serious channel load, which is especially good for slower networks. ODX is supported on Windows 8/1012 and higher.