Running NBU 8.1 on Server 2016, restoring a vm from MSDP direct to Compellent SC4020 SAN we are underwhelmed with the performance. We see KB/Sec 18713. We get similar performance when using LAN trans...
Have a look at this doc: https://www.veritas.com/support/en_US/article.TECH183072 Extract: SAN transport is not always the best choice for restores. It offers the best performance on thick disks, but the worst performance on thin disks, because of the way vStorage APIs work. For thin disk restore, LAN(NBD) is faster.