External Array/Dynamic Disk Discovery

[ccoyne]

I'm looking to find or write a script that will tell me summary information
on an external array. I need to know:

How many dynamic disks are hanging off my server?
What are their drive letters?
Or are they mounted volumes? What is the volume name and where is it
mounted?
Dynamic Disk Size

And, wishfully, which external disk # corresponds to each.

Any ideas?