I could be wrong, but I suspect that any information you get from the GUI will 
simply tell you how much of the raw storage has been configured as volumes that 
can be used by the operating systems connected to your DS8k. The GUI cannot 
make sense of the data on the volumes. To the GUI, I think those volumes appear 
to be no more than a stream of zeros and ones. It cannot tell the difference 
between unused space and data. To ascertain the utilization of those volumes, 
you must use the commands or utilities executed on the operating systems that 
know them as data. 

-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of 
Jake Anderson
Sent: Thursday, January 19, 2023 11:40 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: KMOD1 DS8k box

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Is there a command or facility within DS8K to generate storage array 
utilization report ?

On Thu, Jan 19, 2023, 5:51 PM Paul Gorlinsky <p...@atsmigrations.com> wrote:

> This is the theoretical maximum… not realistic… the available usable 
> space is 100% determined by the blksize and optional key size… zOS use 
> at most
> 1/2 track blocking … it you force a 32760 block size you will waste 
> about 12k per track… safe numbers are about 90% for estimating
>
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