IBM System Storage EXN3200, Installation And Setup Instructions

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Cabling a high availability NAS or iSCSI configuration
This task illustrates how to cable an active/active (or high availability) NAS or iSCSI configuration with
two quad-port SAS HBAs supporting two stacks of expansion units with multipath connectivity.
1. Daisy-chain the SAS ports, as shown in Figure 12.
2.
Cable the first shelf connections, as shown in Figure 13.
3. Cable the last shelf connections, as shown in Figure 14 on page 10.
ACP SAS
Stack 1
ACP SAS
Stack 2
IOM A
IOM B
Controller 2
Ethernet port
B
A
C
D
HBA 1
B
A
C
D
HBA 2
Controller 1
Ethernet port
B
A
C
D
HBA 1
B
A
C
D
HBA 2
exn30012
Figure 12. Daisy-chain the SAS ports
ACP SAS
Stack 1
ACP SAS
Stack 2
IOM A
IOM B
Controller 2
Ethernet port
B
A
C
D
HBA 1
B
A
C
D
HBA 2
Controller 1
Ethernet port
B
A
C
D
HBA 1
B
A
C
D
HBA 2
exn30013
Figure 13. Cable the first shelf connections
Installation and setup instructions
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