Veritas/Symantec DMP

If DMP is used, set Host Access Mode to Asymmetric and retain the other default host and initiator settings. You can click the host name and check the settings on the Summary tab page.

Figure 6-13 Checking storage configurations

• Use Huawei Storage Interoperability Navigator to query the volume management and cluster software supported by DMP.
• If a LUN has been mapped to a host, you must restart the host for the configuration to take effect after you modify the initiator parameters. If the host is running services, stop the services and export the disk group before restarting the host. If you configure the initiator for the first time, restart is not needed.
• If you do not use the recommended configurations, DMP may fail to identify and process paths properly.
• The information displayed on the GUI may vary slightly with the product version.

Install Multipath I/O.

Figure 6-14 Adding Multipath I/O

Then, install Veritas InfoScale. In this document, installing Veritas InfoScale 7.3.1 on Windows Server 2016 is used as an example. For details about the prerequisites and method for installing Veritas InfoScale 7.3.1, see Veritas InfoScale Installation and Upgrade Guide.

• After installing Storage Foundation/InfoScale, install Device Driver Installers (DDIs) for versions earlier than InfoScale 7.1. It is recommended that you install the latest version of DDIs. You can obtain the DDIs installation package from https://sort.veritas.com/asl. For InfoScale 7.1 and later versions, you do not need to install DDIs.
• After installing Storage Foundation/InfoScale and DDIs, install the DMP patches corresponding to the Storage Foundation/InfoScale version. Table 6-1 provides the links for the patches.

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 6-15 Verifying that Huawei storage systems have been properly identified by DMP
   

2. Query path information about disks taken over by DMP. As shown in Figure 6-16, a LUN and eight paths are identified. All of the paths are marked with green dots, indicating that I/Os can be delivered to them, implementing load balancing.
   Figure 6-16 Querying path information about disks taken over by DMP on Veritas Enterprise Administrator
   

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

   Figure 6-17 Querying path information about disks taken over by DMP using the CLI
   
   Figure 6-18 Querying path details about disks taken over by DMP 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.