IBM System Storage Subsystem DS5020 - Manual (Page 40)

Controller B
Controller A
Fibre Channel
host channels Ethernet
ports Serial
port
Enclosure ID
Dual-ported
drive channel
Enclosure ID
Ethernet
ports Serial
port Dual-ported
drive channel Fibre Channel
host channels
Figure 2. Back view; controllers with two standard Fibre Channel host expansion channels
Controller B
Controller A
Fibre Channel
host channels Ethernet
ports Serial
port
Enclosure ID
Dual-ported
drive channel
Enclosure ID
Ethernet
ports Serial
port Dual-ported
drive channel Fibre Channel
host channels
Figure 3. Back view; controllers with two standard and two optional Fibre Channel host
expansion channels
Controller B
Controller A
Fibre Channel
host channels Ethernet
ports Serial
port
Enclosure ID
Dual-ported
drive channel
Enclosure ID
Ethernet
ports Serial
port Dual-ported
drive
channel
iSCSI
host
channels
Power-fan
canister Controller
canister Fibre Channel
host channels iSCSI
host
channels
Figure 4. Back view; controllers with two standard Fibre Channel host expansion channels
and two optional iSCSI host expansion channels
10 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide