Is there a way to restrict / and or specify storage/ data store for a resource pool?
Resource Pools are for Compute (CPU and Memory) resources.
For storage, there's Storage IO Control (SIOC)
Please refer:
SIOC: I/O Distribution with Reservations & Limits – Part 1 - VMware Blogs
SIOC: I/O Distribution with Reservations & Limits – Part 2 - VMware Blogs
https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-60-storag...