A customer has Microsoft Windows servers running Microsoft Multipath IO (MPIO).

For Microsoft Windows servers running MPIO, the optimal path selection policy when connected to an XtremIO cluster is Round Robin. This policy allows for load balancing across all available paths by distributing I/O evenly, which can lead to better performance and utilization of the storage resources.The Round Robin policy ensures that no single path is overloaded with I/O requests, which helps in maintaining consistent performance levels1.

References:

The Dell EMC SC Series: Microsoft Multipath IO Best Practices document provides insights into the recommended path selection policies for optimal performance2.

Additional information on MPIO and path selection policies can be found in the Dell EMC knowledge base articles1.

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