Simplified, High-Performance 10GbE Networks Based on a Single Virtual Distributed Switch, Managed by VMware* vSphere 5.1
7 Conclusion
Using the capabilities of vSphere 5.1 Enterprise Plus and related
tools, network architects can enable dynamic allocation of
network resources, providing excellent support for enterprise
requirements in the areas of performance, HA, and QoS. The VDS
extends management of virtualized resources using VMware
vCenter Server to include VMs on many physical hosts in a single
pool. That dynamic resource management at the data center level
represents a signicant advance over static bandwidth allocation
between hosts, an obsolete holdover from pre-virtualization
networking with 1GbE.
The hypervisor assist provide by VMDq is the network-resource
sharing technology of choice for most virtualized workloads.
It provides the virtualization software the ability to control
dynamic resource allocation, as well as security and management
functionality that enable robust virtual networking. SR-IOV
extends the scope of virtualization to include workloads that
require ultra-low latency and high throughput, especially with
small packet sizes. That added exibility enables a virtualized
environment that primarily uses VMDq but which also uses SR-
IOV for select special cases. The combination delivers optimal
results for the broadest range of network applications, managed
by vSphere’s advanced tools and capabilities.
11
Simplied, High-Performance 10GbE Networks Based on a Single Virtual Distributed Switch, Managed by VMware vSphere* 5.1