How to Decode the Windows MPIO Path Failover Policy Numeric Value

Overview

In WMI-originating information of a host data collection, the numeric values of the MPIO path failover policy are provided, for example (edited for readability):

ROOT\WMI 
  DSM_QueryLBPolicy 
    InstanceName = MPIO\Disk&Ven_DGC&Prod_VRAID&Rev_4501\1&7f6ac24&0&36303036303[...] 
    Active = True 
    LoadBalancePolicy = 
      LoadBalancePolicy = 7

The above load balancing policy can be decoded using the following table. For more information, consult the link in the Reference section below.

Load Balance Policy Definitions

The failover policy and the numeric values correlate as follows:

Value      Definition 
"1"        "Failover Only" 
"2"        "Round Robin" 
"3"        "Round Robin with Subset" 
"4"        "Dynamic Least Queue Depth" 
"5"        "Weighted Paths" 
"6"        "Least Blocks" 
"7"        "Vendor Specific"

Reference

• Microsoft DSM Load Balance Policy WMI Class