Find a poller for Dell Powerstore. Used this for a Dell PowerStore 1000T
You just need to replace the {YOURNODEIP} values with your node's IP address. You can edit this in the template file with your favourite editor before importing into Orion.
You need to store the returned value of DELL-EMC-TOKEN in the POST request as a Token variable that you can include in the Headers of the subsequent GET requests.
You can test the POST and GET requests in Postman https://www.postman.com/
There are limitations, but this is better than nothing. There are feature requests open for native support in SRM.