The VxFlex OS virtual SAN consists of the following software components:
- Meta Data Manager (MDM)—Configures and monitors VxFlex OS.
- Storage Data Server (SDS)—Manages the capacity of a single server and acts as a back-end for data access. The SDS is installed on all servers that are contributing storage devices to VxFlex OS. These devices are accessed through the SDS.
- Storage Data Client (SDC)—A lightweight device driver that resides in the ESXi kernel that exposes VxFlex OS volumes as block devices to the vSphere hypervisor.