Using the above, just wanted to double check there is no requirement for an ISL between switches, RCF doesnt look to make any of ports an ISL just 100Gb ports all used for storage but wanted to double check. I know with a cluster\shared type RCF last two ports are used for ISLs.
#Cisco 9336 Storage Switches with Storage RCF
bronze ember
cedar geyser
If the switches are DEDICATED for doing ONLY STORAGE, then no ISL is required.
If you set them up as shared cluster-storage switches, then the ISL is used for the cluster, but not the storage.