>All of those display is based on the number of cyl. Haven't seen any other 
>indicator

The information is available through QUERY DEVICE STATISTICS, but that just 
tells you the number of cylinders, tracks per cylinder, and bytes per track.

This will allow you to query the size of any cusromised volume, but as far as 
'naming' the device, that's up to you.
We 'know' what a mod-1, -2, -3, -9 is, but everything else is random.
IBM does not recognise a -27, nor a -54 as a valid device type. It's just 
techie verbal shorthand.
These are just nicknames the great unwashed have come up with.

What do we call specialised configs, such as a 100 cylinder logical volume?
A -0.1, a -10%?

The IODF tells you the device architecture.
Actually querying the device tells you the size.

-
-teD

O-KAY! BLUE! JAYS!
Let's PLAY! BALL!

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