Virtualization functions - definition of terms

SR-IOV - Single route input/output virtualization - This is a specification that allows the isolation of PCI Express resources for manageability and performance reasons. It enables the sharing of a single physical PCI express bus to be shared in a virtual environment.

OVS - Open vSwitch - This is an open-source software implementation of a distributed virtual multilayer switch. OVS can operate both as a software-based network switch running within a virtual machine hypervisor, and as the control stack for dedicated switching hardware.

Ceph - This is an open-source software-defined storage platform that implements what is known as object storage on a distributed computer cluster. Ceph replicates data and makes it fault-tolerant.