Product : StarWind, HCA [HCI]/13279, x86
Feature : Task Offloading, Performance, Data Services
Content Owner:  Herman Rutten
vSphere: VMware VAAI-Block (full)
Hyper-V: Microsoft ODX; UNMAP/TRIM
StarWind HCA iSCSI is fully qualified for all VMware vSphere VAAI-Block capabilities that include: Thin Provisioning, HW Assisted Locking, Full Copy, Block Zero.

StarWind HCA is also fully qualified for Microsoft Hyper-V 2016 and 2019 ODX, as well as TRIM (for SATA SSDs) and UNMAP (for SAS SSDs).

Note: ODX is not used for files smaller than 256KB.

VAAI = VMware vSphere APIs for Array Integration
ODX = Offloaded Data Transfers

UNMAP/TRIM support allows the Windows operating system to communicate the inactive block IDs to the storage system. The storage system can wipe these unused blocks internally.