Windows

Configuring the Load Balancing Mode

The method for configuring the load balancing mode when DMP is used is the same as that when the OS native multipathing software is used.

Configuring the Local Preferred Mode

The method for configuring the local preferred mode when DMP is used is the same as that when the OS native multipathing software is used.

Verifying the Load Balancing Mode

1. After installing DDIs and patches, verify that VHUAWEIAP is displayed under DMP DSMs, Array Type is Active/Active-Asymmetric, and Load Balance Policy is Round Robin(Active/Active) on Veritas Enterprise Administrator.
   Figure 7-91 Verifying that Huawei storage systems have been properly identified by DMP
   

2. Verify that HyperMetro LUNs have been aggregated on the host. As shown in Figure 7-92, HyperMetro LUNs have been aggregated into the Harddisk1 disk. There are 16 paths in total for this aggregated disk, each of which is marked with a green dot. This indicates that I/Os can be delivered to all of these paths, implementing load balancing.
   Figure 7-92 Querying path information about the aggregated disk on Veritas Enterprise Administrator
   

   Alternatively, run the mpclaim -s -d command to check the path quantity and status.

   Figure 7-93 Querying path information about the aggregated disk using the CLI
   

   In the preceding command output, LB Policy is Round Robin and State of all paths is Active/Optimized, indicating that I/Os will be distributed on all of these paths for load balancing.

Verifying the Local Preferred Mode

1. After installing DDIs and patches, verify that VHUAWEIAP is displayed under DMP DSMs, Array Type is Active/Active-Asymmetric, and Load Balance Policy is Round Robin(Active/Active) on Veritas Enterprise Administrator.
   Figure 7-94 Verifying that Huawei storage systems have been properly identified by DMP
   

2. Verify that HyperMetro LUNs have been aggregated on the host. As shown in Figure 7-95, HyperMetro LUNs have been aggregated into the Harddisk2 disk. There are 14 paths in total for this aggregated disk, eight of which are marked with green dots. This indicates that I/Os can be delivered to these eight paths, implementing load balancing. The six paths from the non-preferred storage system are not marked with green dots. They are non-preferred paths.
   Figure 7-95 Querying path information about the aggregated disk on Veritas Enterprise Administrator
   

   Alternatively, run the mpclaim -s -d command to check the path quantity and status.

   Figure 7-96 Querying path information about the aggregated disk using the CLI
   

   In the preceding command output, eight preferred paths (whose LB Policy is Round Robin and TPG_State is Active/Optimized) and six non-preferred paths (whose TPG_State is Active/Unoptimized) are displayed, indicating that the configuration has taken effect.