An administrator wants to ensure that all datastores defined on an ALUA-based storage array have load balancing enabled by default. The storage configuration is: - Storage Array Type = VMW_SATP_DEFAUL

For ALUA-based storage arrays, setting the Storage Array Type Policy to VMW_SATP_ALUA ensures proper interaction with the array's asymmetric logical unit access capabilities. This SATP, in conjunction with the VMW_PSP_RR (Round Robin) Path Selection Policy, enables load balancing by distributing I/O requests across all active-optimized paths to the LUNs by default.

While VMW_PSP_RR provides load balancing, leaving the Storage Array Type Policy as VMW_SATP_DEFAULT_AA may not fully optimize for ALUA arrays or ensure that VMW_PSP_RR is set as the default for all new ALUA datastores without manual intervention.

Leaving the Path Selection Policy as VMW_PSP_FIXED would prevent load balancing, as this policy prioritizes a single preferred path and only switches paths upon failure, which contradicts the requirement for load balancing.

NMP (Native Multipathing Plugin) is a framework, not a specific Path Selection Policy that can be configured for load balancing. This option is technically incorrect and would not achieve the stated requirements.