112 drives in seven IBM DS5100 and DS5300 storage expansion
enclosures. (See Table 3 on page 9 for more information.)
Host channels
Each DS5100 and DS5300 controller supports two host interface cards. The
DS5100 and DS5300 controller supports 4 Gbps and 8 Gbps FC host
interface cards or 1 Gbps iSCSI host interface cards, and they can be
mixed within a controller provided that the same type of card is installed in
the same host interface card slot in both controllers. The 4 Gbps and 8
Gbps FC host interface cards contain four single-port host fibre channel
ports per card for a maximum of eight FC ports per controller. The 1 Gbps
iSCSI host interface cards contain two two-port iSCSI ports for a maximum
of four iSCSI ports per controller.
Note: If there is only one host interface card (HIC) per controller, install the
HIC in slot 1 or the controller will lock down during the boot process.
Figure 6 and Table 4 show the slot number of the host Interface card slots
in the DS5100 and DS5300 controller. Slot 1 of controller B is not located
directly below slot 1 of controller A.
Table 4. Description of Figure 113 on page 181
Number Description
1 Host interface card - slot 1 - controller B
2 Host interface card - slot 2 - controller B
3 Host interface card - slot 1 - controller A
4 Host interface card - slot 2 - controller A
The controllers perform link speed negotiation on each host channel fibre
channel port (also referred to as auto-negotiation). Host channels contained
in a:
v Four Gbps host interface card can operate at either 1, 2, or 4 Gbps fibre
channel speeds
v Eight Gbps host interface card can operate at either 2, 4, or 8 Gbps fibre
channel speeds
3
1
2
ds50_7621705
4
Figure 6. Host interface card slots on controllers A and B
Chapter 1. Introduction 13
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