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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.
Controller 1
HBA 1
HBA 2
A
A
B
B
Ethernet port
C
C
D
D
Stack 1
ACP
SAS
IOM A
IOM B
Figure 12. Daisy-chain the SAS ports
2. Cable the first shelf connections, as shown in Figure 13.
Controller 1
HBA 1
HBA 2
A
A
B
B
Ethernet port
C
C
D
D
Stack 1
ACP
SAS
IOM A
IOM B
Figure 13. Cable the first shelf connections
3. Cable the last shelf connections, as shown in Figure 14 on page 10.
Controller 2
HBA 1
HBA 2
A
A
B
B
Ethernet port
C
C
D
D
Stack 2
ACP
SAS
Controller 2
HBA 1
HBA 2
A
A
B
B
Ethernet port
C
C
D
D
Stack 2
ACP
SAS
Installation and setup instructions
9
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