Interesting. I had no idea there was such a distinction. It also explains a
question I didn't ask. We are moving our "managed" mainframe from Kyndryl to
Ensono, and it appears that which ones are track managed vs which ones are
cylinder managed differ between the two host environments. See below.
At Kyndryl
Unit * DSN '**'
DevType * VOLSTATE
ALL SMS SG *
Volumes 1652 TM Data Sets N/A VSAM N/A
non-VSAM N/A CM Vols 36
TM Data Sets N/A VSAM N/A non-VSAM N/A
VOLSER * TM Trks used 456476199
Free 152137071 Utilized 75%
CM Cyls used 3455550 Free 3641778 Utilized 49%
Tot Trk
used 508309449 Free 206763741 Utilized 71%
At Ensono
Unit * DSN '**'
DevType * VOLSTATE ALL SMS SG *
Volumes 1719 TM Data sets N/A VSAM N/A non-VSAM N/A
CM Vols 36 CM Data sets N/A VSAM N/A non-VSAM N/A
VOLSER * TM Trks used 456586528 Free 166678967 Utilized 73%
CM Cyls used 3458700 Free 3638628 Utilized 49%
Tot Cyls used 33897801 Free 14750559 Utilized 70%
I was hoping there might be an option where I could view the "Total" lines for
each using the same "type" (both in cyl or both in tracks), but I guess I'm
stuck with using a calculator.
Thanks for the help!
Frank
________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of
Farley, Peter <[email protected]>
Sent: Wednesday, May 21, 2025 5:48 PM
To: [email protected] <[email protected]>
Subject: Re: Volume Summary from IBM File Manager
SWAG without looking up the FM docs - TM == Track Managed, CM == Cylinder
Managed. Given the very large "tracks used" values in that display I'm
assuming that is an EAV volume.
Peter
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
Frank Swarbrick
Sent: Wednesday, May 21, 2025 7:39 PM
To: [email protected]
Subject: Volume Summary from IBM File Manager
I can't find anywhere in the documentation describing what each of these
fields/labels represent. I guess most are obvious, but what do "TM" and "CM"
mean in this context? Also, how do I convert tracks/cylinders to bytes? One
website says 56,664 bytes per track. Others say it depends on "disk type".
These all seem to be defined as 3390, and another website says all 3390 models
have 56,664 per track. I just want to make sure that is accurate.
(No, I am not a sysprog.)
File Manager Volume Summary
Unit * DSN '**'
DevType * VOLSTATE ALL SMS SG *
Volumes 217 TM Data Sets N/A VSAM N/A non-VSAM N/A
CM Vols 2 TM Data Sets N/A VSAM N/A non-VSAM N/A
VOLSER BK* TM Trks used 196690529 Free 16008181 Utilized 92%
CM Cyls used 7308 Free 386988 Utilized 2%
Tot Trk used 196800149 Free 21813001 Utilized 90%
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