System information

Advanced Functions

5-16

• Active-Active Redundant Dual Independent MPIO Hosts

As Figure 5-8 shows, the redundant RAID system is operating in a dual independent MPIO hosts environment using the

selective storage method. All LUNs are formed into storage groups, used to bind the host groups across four fibre ports.

To set up the connection, perform these tasks in the RAID GUI:

• Specify the storage provisioning method

• Assign the WWPN for the HBAs in the server hosts

• Define the host group to which the server host belongs to

• Create storage groups for LUNs

• Bind storage groups to each host group across four fibre ports

In this configuration, for DG0LD0 and DG0LD1, 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 and

DG1LD1, the condition is reversed.

In this configuration, each LUN is mapped to all fibre ports, one is active path and the other is standby path. The

Configuration Tasks table shown below details each configuration task according to the example given in Figure 5-8.

FCP1FCP2FCPa2 FCPa1 FCP1FCP2FCPb2 FCPb1

Storage Group 0

(for Host Group 0)

Storage Group 1

(for Host Group 1)

DG0LD0 DG0LD1 DG1LD0 DG1LD1

Host B

WWPN

HBA1

HBA0 HBA3

HBA2

Host Group 1

Host A

Host Group 0

MPIO

Controller BController A

Figure 5-8 Redundant Dual Independent MPIO hosts