3. The following illustrations do not accurately represent the controller locations or
port locations in the DS5020. The illustrations are for illustration purposes only.
Figure 61 shows an example of a multiple port, single-host configuration. A system
that uses multiple iSCSI ports can provide enhanced performance compared to a
single-port iSCSI connection.
Figure 62 shows a multiple-host, multiple-port configuration. For cluster
configurations, the following illustration is an example of a multiple-host,
multiple-port, and redundant path and controller configuration. You can replace the
two gigabit Ethernet switches in the illustration with one large gigabit Ethernet
switch that has the required number of ports. Virtual local area network (VLAN) can
also be used to isolate the two iSCSI networks, instead of a single switch.
Gigabit
Ethernet
switch
Host system
with two iSCSI
connectors
DS5020
Figure 61. Example of a single-host, multiple-port configuration
Gigabit
Ethernet
switch
Host system
with two iSCSI
connectors
DS5020
Host system
with two iSCSI
connectors
Ethernet
switch
Figure 62. Example of a multiple-host, multiple-port configuration
Chapter 3. Cabling the storage subsystem 91
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