Owner's Manual

26 iSCSI Cluster Setup for Dell EqualLogic PS Series Storage Systems
that two Gigabit Ethernet switches are used because in the event of a switch
failure in a single ethernet switch environment, all hosts will lose access to the
storage until the switch is physically replaced and the configuration restored.
For such configuration, there should be multiple ports with link aggregation
providing the inter-switch, or trunk, connection. Further, from each of the
control modules, it is recommended that one Gigabit interface connects to
one Ethernet switch, and the other two Gigabit interfaces connect to the
other Ethernet switch.
Figure 5-1. Recommended Network Configuration
Figure 5-2 is an architecture overview of a sample Oracle RAC configuration
with 3 PS5000XV arrays.
Table 5-1. Cable Color Legend
Cable Color Denotes
Blue
iSCSI storage area network (SAN)
Red Oracle RAC private interconnect network
Black public network
Trunk Links
Dell PowerConnect 54xx
Gigabit Ethernet Switches for
iSCSI storage area network
Operations Panel
Rare view of Dell EqualLogic
PS5000XV iSCSI Storage Array
Power Supply and
Cooling Module 1
iSCSI Storage Area Network
Control Module 1 Control Module 0 Power Supply and
Cooling Module 0