IBM System Storage DS3300, Installation, User'S, And Maintenance Manual

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DS3300 dual-controller configurations
The following illustration is 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.
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 that are shown in Figure 29 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
DS3300
Figure 28. Single-host, multiple-port, dual-controller configuration
Gigabit
Ethernet
switch
Gigabit
Ethernet
switch
DS3300
Host system
with two iSCSI
connectors
Host system
with two iSCSI
connectors
Figure 29. Multiple-host, multiple-port, dual-controller configuration
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System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide