Enumerate disk instances in Solaris

HI,

I need to find out what are all the hard disks connected in my System on Solaris?

Also on my system when I ran the command prtconf, the following output is displayed.

sd (driver not attached)
st (driver not attached)
sd, instance #0 (driver not attached)
sd, instance #1
sd, instance #2 (driver not attached)
sd, instance #3 (driver not attached)
sd, instance #4 (driver not attached)
sd, instance #5 (driver not attached)
sd, instance #6 (driver not attached)

I am not sure if the above output refers to multiple disks or slices (partitions) on a same disk. How to infer the above output?

I'm using "iostat -En" to identify connected disks.