Information Technology Reference
In-Depth Information
Data Center 3.0 Topology Components
Figure 4-3 shows the Cisco Data Center 3.0 topology.
Virtualized Server Environment
Unified Computing Resources
Consolidated Connectivity
(Fibre Channel Ethernet FCoE)
Ethernet FCoE
FC
VSLAN
VLAN
Virtualized SAN and LAN
Virtualized Storage and
Network Devices
Figure 4-3
Cisco Data Center 3.0 Topology
At the top layer, we have virtual machines which are software entities that have hardware
level abstraction capable of running a guest OS on top of a resource scheduler also known
as a hypervisor.
Key
To p i c
Within the unified computing resources, the service profile defines the identity of the
server. The identity contains many items such as memory, CPU, network cards, storage in-
for mat ion, and boot image.
10 Gigabit Ethernet, FCoE, and Fibre Channel technologies provide the unified fabric and
is supported on the Cisco Nexus 5000. FCoE is one of the key technologies that allow na-
tive Fibre Channel frames to be used on 10G Ethernet networks.
Virtualization technologies such as VLANs and VSANs provide for virtualized LAN and
SAN connectivity by logically segmenting multiple LANs and SANs on the same physical
equipment. Each VLAN and VSAN operates independently from one another.
At the lowest layer, we have virtualized hardware where storage devices can be virtualized
into storage pools and network devices are virtualized using virtual device contexts (VDC).
In the data center, server deployments are of great concern along with facilities and net-
work equipment. Here are some of the challenges that must be dealt with when deploying
servers:
Key
Power required
■
Physical rack space usage
■
