Simplify VMware vSphere* 4 Networking with Intel Ethernet 10 Gigabit Server Adapters
The Foundation of Virtualization
WHITEPAPER
This paper provides network architects and deci-
sion makers with guidance for moving from GbE to
10GbE networking in their virtualized data centers.
It begins with a review of the current state of the
typical virtualized data center and discusses some
of the challenges and opportunities associated
with maximizing the value of virtualization. Next,
it explores the factors that underlie the excessive
complexity associated with GbE networking and
describes how 10GbE can address that complexity.
It then provides some best practices for
achieving optimal networking results in virtual
infrastructures. Finally, it addresses some concerns
decision makers might have with regard to security
and performance.
overview
Advances in Intel
®
Ethernet 10 Gigabit (10GbE) Server Adapters and VMware vSphere* 4 enable
migration away from legacy Gigabit Ethernet (GbE) networking. As the industry move toward 10GbE
becomes more mainstream, IT organizations are considering its use for initiatives such as LAN/SAN
consolidation and unification. Many of these organizations have found success with the practical first
step of converging multiple LAN connections using 10GbE. This transition lowers the number of physical
connections required, thus reducing overall complexity and cost, while providing advanced security and
trac segmentation.
Networking virtualized hosts with GbE is typically based on relatively large numbers of dedicated
physical connections, which are used both to segregate dierent types of trac and to provide
sucient bandwidth. Using 10GbE connectivity can help overcome shortcomings of this approach,
including the following:
Today’s Intel
®
Ethernet 10 Gigabit Server Adapters can greatly reduce the
level of networking complexity in VMware vSphere* 4 environments.
• Excessive complexity. Large numbers of server
adapters and the attendant cabling make
administration less ecient and increase the
likelihood of connection and configuration
errors.
• High equipment costs. Using many GbE
network adapters requires the purchase of
the actual adapters, as well as the use of large
numbers of motherboard slots, switch ports,
cables, and so on.
• Increased energy use. Powering many
individual GbE server adapters and switch
ports directly increases power usage and
raises server-room cooling requirements.