Configuring Multipath I/O (MPIO) on the storage node enables Windows Server to use alternate paths in the event of a failure, and provides load balancing. When properly cabled and using dual-port SAS physical disks, each server has two physical paths to each physical disk.
The required MPIO load balancing policy for this solution is Round Robin. Round Robin is the optimal MPIO load balancing policy for workloads with random I/O. For workloads with mostly sequential I/O, it is recommended to use the Least Blocks MPIO load balancing policy instead.
Run the following PowerShell command to enable Round Robin.
Set-MSDSMGlobalDefaultLoadBalancePolicy -Policy RR
Run the following PowerShell command to enable Least Blocks.
Set-MSDSMGlobalDefaultLoadBalancePolicy -Policy LB