We have a single DSS6 server (no cluster), that's exporting a few volumes to vSphere 5 over iSCSI.

We are planning to upgrade this system to DSS7, but I'm trying to find out what the exact process is for this? Is there a supported upgrade path? If so, what are the steps?

I know there will be downtime, that's not the issue, it's the upgrade process itself that I need to know more information about.

Thanks