IBM DS5100 Installation, User's, And Maintenance Manual page 50

Table 6. RAID controller specifications (continued)
Category
Interface
18
IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User's, and Maintenance Guide
Criteria
Fibre channel or iSCSI host port
Fibre channel drive expansion port
Specification
Two host interface cards per controller
for a total of 8 fibre channel host ports
or four iSCSI host ports per controller.
Support for:
v Two 4 Gbps FC host interface
cards per controller
v Two 8 Gbps FC host interface
cards per controller
v One 4 Gbps FC host interface card
and one 8 Gbps FC host interface
card per controller.
v Two 1 Gbps iSCSI host interface
cards per controller.
v Any combination of 4 Gbps FC, 8
Gbps FC, or 1 Gbps iSCSI host
interface cards.
Important: When mixing 1 Gbps
iSCSI, 4 Gbps FC, and 8 Gbps FC
host interface cards in a controller,
you must use the same
combination in the same host
interface card slots in the other
controller. For example, in controller
A, if host interface card slot 1
contains a 4 Gbps host interface
card and host interface card slot 2
contains an 8 Gbps host interface
card, then host interface card slot 1
in controller B must contain a 4
Gbps host interface card and host
interface card slot 2 must contain
an 8 Gbps host interface card.
Otherwise, the controller is in the
lockdown state during the boot
process.
Two Ethernet ports per controller (for
out-of-band management)
8 fiber-optic ports per controller
Note: Each DS5100 and DS5300
controller drive channel has two ports.
There are four drive channels per
DS5100 and DS5300 controller.