Which two reasons would prevent Storage Distributed Resource Scheduler (SDRS) from operating on a datastore? (Choose two.)

Storage Distributed Resource Scheduler (SDRS) leverages Storage I/O Control (SIOC) to collect I/O latency and throughput metrics, which are crucial for making intelligent load balancing decisions. If SIOC is disabled, SDRS loses its primary mechanism for monitoring and reacting to I/O congestion, thereby preventing it from operating effectively for I/O-based recommendations.

SDRS has specific compatibility requirements for the ESXi hosts that access the datastore, including minimum vSphere versions and licensing. If a datastore is connected to an ESXi host that does not meet these compatibility standards or is running an unsupported version, SDRS cannot fully integrate with or manage that host's access to the datastore, which prevents its operation.

Storage DRS supports NFS datastores and can perform both space and I/O balancing operations on them, provided other prerequisites like Storage I/O Control are met.

Storage DRS supports iSCSI datastores and can perform both space and I/O balancing operations on them, just like Fibre Channel and NFS, given that all other prerequisites are satisfied.