@cuddly-answer-63806 hi there! I'm the product manager for Harvester at SUSE. Rancher is integrated with Harvester by default:
https://docs.harvesterhci.io/v1.2/rancher/index
A single node installation is a good way to test.
@ancient-pizza-13099 can likely tell help you more with your iSCSI question.
Harvester and Rancher are free and open source technologies, but if you'd like support with your transition and further help (such as consulting on the nitty gritty), SUSE Rancher is here to help. You're welcome to reach out to me to discuss, if you'd like:
asettle@suse.com