I would definitely encourage you to checkout the REST API -   You may find what you're looking for there.  I see many objects/types that I bet would be able to get what you're looking for.  Under the StorageCenter objects, see ScVolumeIOUsage, ScControllerIoUsage, etc.  Basically anything with "IOUsage".
Hi,   We would to have monitoring on compellent storage and fluidfs in our company. hardware - capacityiops / performance   Can we use ipmi /rest api access to able monitor?
Monitor Compellent & FluidFS