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28 9176/D173 D
ISK SUBSYSTEM - SITE PREPARATION GUIDE
Host Interface Connectors
The controller tray contains four host interface cards. The cards can be GBIC (gigabit
interface card) or DB-9 cards. A GBIC card contains a pair of GBIC interface connectors,
which interface the controller to fibre optic or copper fibre host cables. A DB-9 card
contains a pair of DB-9 interface modules, which interface the controller to copper fibre
host cables. Figure 9 shows the host interface card slots populated with GBIC cards and
the drive interface card slots populated with DB-9 cards
The interface cards connect to the controller in pairs. Cards 0 and 2 connect to the top
controller (controller A) and Cards 1 and 3 connect to the bottom controller (controller B)
(Figure 9). To ensure redundancy, you must connect each host to both controllers through
the appropriate interface card.
Figure 9 Controller Tray Host Interface Connectors
012
3
Ctlr B
Host Interface Connectors
Ctlr A
GBIC
Interface
Connector
DB-9
Interface
Connector
Ctlr A
Ctlr B
Drive Interface
Connectors
Ctlr A
Ctlr B
Front View