User Manual

Advanced Functions

5-24

• Active-Active Redundant Single MPIO Host (Quad Channel)

As Figure 5-7 shows, the redundant RAID system is operating in a single

MPIO host environment using the symmetric storage method. The access

channel is established via four fibre ports, fcpa1, fcpa2, fcpb1, and

fcpb2. The redundant paths of all LUNs are also established by mapping

them across four fibre ports.

In this configuration, for DG0LD0, the green path is the active path while

the red path is the standby path, when the green path fails, the link

transfroms and access will be continued by the red dotted path; for

DG1LD0, the condition is reversed.

The steps to configure the LUN mappings is the same as the dual channel

configuration of redundant single MPIO host. See the following

Configuration Tasks table for the quad channel configuration according

to the example given in Figure 5-7.

Select Storage Provisioning

method

RAID Management > Storage

Provisioning > Simple

Specify the LUN ID and map

LUNs to fiber ports

fcpa2 -> DG0LD0

fcpa2 -> DG1LD0

fcpb2 -> DG0LD0

fcpb2 -> DG1LD0

Figure 5-7 Redundant Single MPIO host (quad channel)

FCP1FCP2FCPa2 FCPa1 FCP1FCP2FCPb2 FCPb1

DG0LD0

DG1LD0

Host

WWPN

HBA2 HBA3HBA1HBA0

Host Group 0

MPIO

Controller BController A