Are you sure? I see LM DC: on my display; that's the construct where size is
defined in the Library Manager. Dataclass is definitely stored (I'd guess in
the VVDS, not sure honestly, but certainly in the LM for tape volumes); check
your dataset records in a DCOLLECT run . . . .
D SMS,VOL(640000)
CBR1180I OAM TAPE VOLUME STATUS: 022
VOLUME MEDIA STORAGE LIBRARY USE W C SOFTWARE LIBRARY
TYPE GROUP NAME ATR P P ERR STAT CATEGORY
640000 MEDIA2 LITVE2F LITCL02 P N N NOERROR PRIVATE
-------------------------------------------------------------------
RECORDING TECH: 36 TRACK COMPACTION: YES
SPECIAL ATTRIBUTE: NONE ENTER/EJECT DATE: 2012-10-28
CREATION DATE: 2012-10-28 EXPIRATION DATE: 1999-00-00
LAST MOUNTED DATE: 2018-02-07 LAST WRITTEN DATE: 2018-02-07
SHELF LOCATION:
OWNER: XPTR
LM SG: LITVE2F LM SC: LITVE LM MC: MCVTSGDE LM DC: DC4GB
LM CATEGORY: 000F
-------------------------------------------------------------------
LOGICAL VOLUME.
VOLUME IS CACHE RESIDENT.
COPY EXISTS IN AT LEAST TWO DISTRIBUTED LIBRARIES.
First Horizon Bank
Mainframe Technical Support
-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of
Pew, Curtis G
Sent: Tuesday, October 20, 2020 5:26 PM
To: [email protected]
Subject: Re: How to determine the Dataclas Used for a TAPE
[External Email. Exercise caution when clicking links or opening attachments.]
On Oct 20, 2020, at 3:00 PM, Jackson, Rob <[email protected]> wrote:
>
> Tape dataclass is on the volume level. You can use 'd sms,vol(vvvvvv)'.
That shows the storage group but not the dataclass.
I’m pretty sure DATACLAS, for both disk and tape, is used during ACS routines
and allocation in general, but isn’t ever stored anywhere. It’s a place for the
system to get information when allocating the dataset, but then it’s discarded.
--
Pew, Curtis G
[email protected]
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions, send email to
[email protected] with the message: INFO IBM-MAIN
Confidentiality notice:
This e-mail message, including any attachments, may contain legally privileged
and/or confidential information. If you are not the intended recipient(s), or
the employee or agent responsible for delivery of this message to the intended
recipient(s), you are hereby notified that any dissemination, distribution, or
copying of this e-mail message is strictly prohibited. If you have received
this message in error, please immediately notify the sender and delete this
e-mail message from your computer.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
