IBM Midrange System DS4000 Series Hardware Manual page 75

According to Figure 3-29, host ports in controller B have numbers 1-8 from left to right, while
the ports in controller A have them from right to left.
The DS5000 storage subsystem also fully supports Fibre Channel switched connections.
Figure 3-29 shows how the DS5000 would be connected into dual-redundant fabrics.
SAN
Figure 3-29 SAN connected hosts to DS5000 storage subsystem
According to Figure 3-30, host ports in controller B have numbers 1-6 from left to right, while
the ports in controller A have them from right to left.
SAN
Figure 3-30 Mixed host type HICs
Hosts
8 7 6 5 4 3
1 1 2 2 3 3 4 4 5 6
FC Hosts
SAN
4 3
6 5
5
1 2 3 4
FC HIC iSCSI HIC
Chapter 3. IBM System Storage DS4000 and DS5000 hardware
SAN
2 1
Controller A
7 8
Controller B
iSCSI Hosts
LAN
(iSCSI)
Controller A
2 1
6
Controller B
57