Dot Hill Systems II 200 FC - Manual (Page 68)

4-20 SANnet II 200 FC, SATA, and SATA SE Array Installation, Operation, and Service Manual • March 2005
Figure 4-14 Host Channels on a Dual-Controller SANnet II 200 FC Array
4.8.2.2 SANnet II 200 SATA and SATA SE Arrays
In a default dual-controller SANnet II 200 SATA and SATA SE RAID configuration,
each controller has six host ports, as shown in Figure 4-15:
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Two host ports connect to channel 0 (FC 0)
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Two host ports connect to channel 1 (FC 1)
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One host port connects to channel 4 (FC 4)
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One host port connects to channel 5 (FC 5)
Channels 0 and 1 support 1-Gbit or 2-Gbit data transfer speeds. Channels 4 and 5
support 2-Gbit data transfer speeds only.
If a fabric switch is connected to one port of channel 0 or channel 1, no connections
can be made with the other three ports of that channel. If channel 0 (FC 0) is connected
to a fabric switch, for example, the second port for channel 0 on that controller, and
both ports on a redundant controller cannot be used. Similarly, if channel 1 (FC 1) is
connected to a fabric switch, the second port on that controller and the two FC 1 ports
on a redundant controller cannot be used.
Two hosts can be directly connected to either channel 0 (ports FC 0) or channel 1
(ports FC 1), but in that configuration, host filters are required if you want to control
host access to storage. Each host channel has an upper port and a lower port.
Host channel 0 Host channel 1
Host channel 4 Host channel 5
An upper port and a lower port are on each host channel.