Compaq AA-RHGWC-TE manual Multiple-Bus Nspof Configuration Number

Therefore, you want to ensure that both HSG80 controllers start at the same time under all circumstances so that the controller sees its own preferred units.

Figure 6–5, Figure 6–6, and Figure 6–7 show three different multiple-bus NSPOF cluster configurations. The only difference is the fiber-optic cable connection path between the switch and the HSG80 controller ports.

If you consider the loss of a host bus adapter or switch, the configurations in Figure 6–6 and Figure 6–7 will provide better throughput than Figure 6–5 because you still have access to both controllers. With Figure 6–5, if you lose a host bus adapter or switch, you lose the use of a controller.

Figure 6–5: Multiple-Bus NSPOF Configuration Number 1

Member

System

1

Memory Channel

KGPSA

KGPSA

Memory Channel

Interface

Member

System

2

Memory Channel

KGPSA

KGPSA

Fibre Channel Switch

Fibre Channel Switch

			HSG 80
	1	Controller A			2
Port				Port
			HSG 80
Port	1	Controller B		Port	2
		RA8000/ESA12000

ZK-1706U-AI

6–12Using Fibre Channel Storage