Galaxy A16F-R2422 Installation and Hardware Reference Manual
Subsystem Connection and Operation
4-6
4
CH0 & CH1 Hub Enable/Disable
Enable
Section 4.3.1
5
CH0 & CH1 Auto/4G/2G/1G
Speed Selection
Auto
Section 4.3.2
6 - 8
Reserved
-
-
Table 4-1: DIP Switch Definition
4.3.1 DIP Switch 4: CH0 & CH1 Hub Enable/Disable
The subsystem has internal hub through which host channels CH0 and CH1
are routed to four (4) FC connectors, two (2) connectors per each channel.
Default setting enables the hub.
When the default setting is retained, the fourth switch is on the “
0
” position,
the two FC ports of CH/0 on the left host connection module will be hub
together to both controller A (top) and controller B (bottom). The two FC
ports of CH/1 on the right host connection module will also be hub together
to both controllers.
The host ports on the two (2) host connection modules assume the same
World Wide Name (WWN) node name and different port names. If a
controller fails, the surviving controller will avail itself using the failed
controller’s port names.
In the event of cable disconnection or RAID controller failure, a valid data
link through the existing controller will continue data transfer that was
previously served by the failed controller.
Enable the internal hub provides you the daisy chain functionality. Connect
the left FC ports on both host connection modules to the host computers and
the right FC ports to the left FC ports of second subsystem. Detail setting for
the topology is being discussed in
Section 4.4
of this manual.
CAUTION!
If you are going to daisy chain the A16F-R2422 subsystems, be sure to
connect all necessary SFP transceivers and cables before turn on the
subsystem. If you power on the subsystem before correctly connect cables,
unexpected damages may occur.
When the internal hub is disabled, the two controllers on the subsystem will
manage the FC ports on the separate host connection modules as seen in
Figure 4-2
. The right FC port on the host connection module is controlled
by controller A and vice versa.
