I've read that cachecade 2.0 is not available on the H710P but the Dell posting talking about this was very old -- is this still true and only cachecade 1.1 is supported as a read-only cache?
Yes, cachecade 2.0 was never released on our PERCs. We dropped cachecade completely and moved to Sandisk DAS Cache on later generations. You can read more about it here:
The last unknown is how cachecade is applied to virtual devices. Is a cachecaid array global for the entire pool of virtual disks or do you have to associate it with a virtual disk?
It is global. There are very few options available when configuring cachecade. You can create, delete, or name a cachecade virtual disk. The rest of your questions should be answered in this article:
<ADMIN NOTE: Broken link has been removed from this post by Dell>
There are two things of note in that article:
Dell EMC, Enterprise Engineer
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