Server/SIOV-R2

Scalable I/O Virtualization (SIOV)

SIOV is hardware-assisted I/O virtualization designed for the hyperscale era, with the potential to support thousands of virtualized workloads per server.

• SIOV moves the non-performance-critical virtualization and management logic off the device and into the virtualization stack. It uses a new scalable identifier on the device to address the workloads’ memory.

SIOV delivers key benefits vs. prior art:

• Reduces the per-VM virtualization cost on the devices
• More efficiently supports large numbers of VMs and containers
• Provides more flexibility to the virtualization stack for provisioning & composability.

Impact: Virtualized I/O devices become much more configurable and scalable while delivering near-native performance to each VM/container/microservice.

SIOV R1

Scalable I/O Virtualization, Revision 1 was contributed to OCP by Intel and Microsoft:

• SIOV R1