Fujitsu SPARC M3000 User Manual download pdf (Page 26)

1-6 C120-E360-06EN

CHAPTER 1 RCI Overview

Figure 1.4 shows a connection pattern that connects both duplicated and unduplicated

configurations.

Figure 1.4 Mixture of duplicated and unduplicated configurations

The pattern can contain RCI I/O units and RCI hosts that do not support a duplicated

configuration.

Connect them to the duplicate system. Connect RCI hosts that do not support a

duplicated configuration to the #0 system.

If an RCI host that does not support a duplicated configuration were already

connected, RCI I/O units would be connected to the #0 system.

Note: When an RCI host of the duplicated configuration is connected with RCI

hosts or RCI I/O units that do not support a duplicated configuration, it may

fail to control the RCI host or the RCI I/O unit on the #0 system in the

following case:

z When an XSCFU#0 failure generated an XSCF failover and the Active

XSCF Unit switched to XSCFU#1.

In this case, maintenance work of XSCFU#0 becomes necessary.

RCI host

RCI#0 RCI#0

I/O unit

RCI#0

RCI host

RCI#0

RCI#1

I/O unit

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Fujitsu SPARC M3000 User Manual Page 26