Sun Microsystems StorEdge 3000 Series, Инструкция по установке, эксплуатации и обслуживанию

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Chapter 4 Connecting Your Fibre Channel Array 4-11
FIGURE 4-6
Dedicated Drive Channels 2 (on the Upper Controller) and 3 (on the Lower Controller) in a
Dual-Controller Array
The controller module in slot A (the upper slot) houses drive channel 2, which
connects to the 12 internal disk drives through their A ports. The controller module
in slot B (the lower slot) houses drive channel 3, which connects to the 12 internal
disk drives through their B ports.
Host channels connect to host computers either directly or through storage switches
or other devices. In a default dual-controller RAID configuration, each controller has
four host channels, channels 0, 1, 4, and 5 (
FIGURE 4-7
). Port bypass circuits connect
each pair of host SFP ports on a host channel; as a result, each host channel accesses
both controllers.
FIGURE 4-7
Host Channels on a Dual-Controller Array
4.6.2 Default SFP Placement
In dual-controller arrays, SFPs are initially plugged into one of each pair of host and
drive ports. The default port connections are:
■
The upper I/O controller module has SFPs in the FC0, FC2, and FC4 ports.
Two drive ports on channel 2 Two drive ports on channel 3
Host channel 0 Host channel 1
Host channel 4 Host channel 5
An upper port and a lower port are on each host channel.