The VMware vSphere Hypervisor ESXi runs on the management appliance and VxBlock Systems servers using VMware vSphere Enterprise Plus.
The lightweight hypervisor requires less than 6 GB of storage, with minimal management overhead. By default, the hypervisor is installed on a 64 GB Cisco FlexFlash SD Card (mirrored HV partition). All Cisco FlexFlash (boot) capable hosts are configured with a minimum of two 64 GB SD cards. The compute hypervisor supports 4–6 10 GbE pNICS on the VxBlock System 1000 VICs.
VMware vSphere ESXi does not contain a console operating system. The VMware vSphere Hypervisor ESXi boots from Cisco FlexFlash SD cards. The stateless hypervisor (PXE boot into memory) is not supported.