Sun-microsystems Sun StorEdge T3 Manual de usuario descargar pdf (Pagina 54)

42 Sun StorEdge T3 and T3+ Array Configuration Guide • August 2001

Dual Hosts With Two Hubs and Four Controller

Units Configured as Two Partner Groups

FIGURE 4-8 shows two application hosts connected through FC-AL cables to two hubs

and four Sun StorEdge T3+ arrays forming two partner groups. This multi-initiator

configuration can be used for footprint and I/O throughput.

Note – This configuration is a recommended enterprise configuration for RAS

functionality because the controller is not a single point of failure.

Note – There are no hub port position dependencies when connecting arrays to a

hub. An array can be connected to any available port on the hub.

Each array needs to be assigned a unique target address using the port set

command. These target addresses can be any number between 1 and 125. At the

factory, the array target addresses are set starting with target address 1 for the

bottom array and continuing to the top array. Use the port list command to

verify that all arrays have a unique target address. Refer to Appendix A of the Sun

StorEdge T3 and T3+ Array Administrator’s Guide for further details.

The following three parameters must be set on the master controller unit, as follows:

■ mp_support = rw or mpxio

■ cache mode = auto

■ cache mirroring = auto

Note – For information on setting these parameters, refer to the Sun StorEdge T3 and

T3+ Array Administrator’s Guide

Host-based multipathing software is required for this configuration.

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Sun-microsystems Sun StorEdge T3 Manual de usuario Pagina 54