Dell S5000 Deployment/Configuration Manual page 5

Dell Networking S5000: Deployment of a Converged Infrastructure with FCoE
Figure 1: Traditional LAN/SAN non-converged network
The Dell Compellent Storage Center controllers are used to support various I/O adapters including FC,
iSCSI, FCoE, and SAS. A Dell Compellent Storage Center consists of one or two controllers, FC
switches, and one or more enclosures. In the above example, two Compellent SC8000 controllers,
one Compellent SC220 enclosure, two FC switches, and one 4-port FC HBA card on each Compellent
controller is used for the SAN network. The FC switches provide robust connectivity to servers,
allowing for the use of multiple controllers and redundant transport paths.
SAS enclosures hold disks for data storage and connect to the controllers through back-end ports via
SAS cables; you can see how the SC220 enclosure and controllers are cabled together in Figure 1
above.
To keep the diagram uncluttered yet detailed, the only connections not shown are the 'eth0' ports on
each controller connecting to the management network and the 'eth1' port on each controller
connecting to the 'eth1' port on the other controller. The 'eth0' connection supports system login and
access for the software. It's used to send emails, alerts, SNMP traps, and Phone Home data. The 'eth1'
connection is used for dedicated Inter-Process Communication (IPC) between controllers in a dual-
controller Storage Center. There is no default gateway for 'eth1' and it does not need to be set. See the
"CT-SC040 and SC8000 Connectivity Guide" and "Compellent Storage Center System Setup Guide" to
get started on cabling and configuring your Compellent storage array.
In this example setup, two SC8000 controllers and one SC220 disk enclosure have been cabled
together. There are two paths available from the server to the FC switches and four paths available
from each FC switch to the Compellent storage array.
Compellent SC8000 Load Balancing Policy Options:
The Compellent SC8000 controller uses Microsoft Multipath I/O (MPIO) for load balancing over ports.
Microsoft MPIO is a framework that allows administrators to configure load balancing and failover
5 Deployment of a Converged Infrastructure with FCoE
Deployment/Configuration Guide