Greg Shirey wrote:
snip
It's actually VOLUME COUNT in the DATACLAS definition. From the (1.12) HELP
panel:
Use the VOLUME COUNT field to specify the maximum number of volumes you
expect to use to store a data set in this Data Class.
For example, to reserve five volumes per
Vernooij, CP - SPLXM wrote:
snip
I did not read the entire thread, so my remark may be totally inapplicable, but
what you describe (all extents on all volumes are created at allocation time)
applies only if you specify Guaranteed Space? Then this is exactly what
Guaranteed Space is intended
Vernooij, CP - SPLXM wrote:
snip
Another approach: instead of working with multi volume extents of 1 dataset,
why not allocate as many single volume datasets as needed?
end snip
Thanks for the idea, but no ... I am working on an existing application, where
the single-dataset property is
Mike Schwab wrote:
snip
The DSORG=PS limits the dataset to the 64K Tracks, and goes to the next volume
if the next extent would exceed that value.
end snip
Are you sure of that (that it would force a change of volume when exceeding
64k tracks or whatever the limit per volume is) ???
If
]
On Behalf Of DEBERT Jean-Louis
Sent: Wednesday, November 07, 2012 1:16 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [IBM-MAIN] multi-volume SMS file allocation
Ron Hawkins wrote:
Use a guaranteed space storage class, and specify a unit count in the
JCL
-
e.g. UNIT=(,5). Specify
for your input anyway, and thanks to all who took the time to answer
(and fast, at that ...)
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU]
On Behalf Of DEBERT Jean-Louis
Sent: Tuesday, November 06, 2012 5:15 AM
To: IBM-MAIN
you very much, Ron
If it works like you say, this is exactly what I need !
Again, thanks.
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU]
On Behalf Of DEBERT Jean-Louis
Sent: Wednesday, November 07, 2012 1:16 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Hello list,
Does anybody know if/how it is possible to force SMS to allocate extents (the
primary allocation then each secondary allocation) on different volumes (even
if there is space enough on the first volume to put several extents there) ?
This would be for an application that writes
want to go to the next volume.
- Original Message -
From: DEBERT Jean-Louis [mailto:jl.deb...@rsd.com]
Sent: Tuesday, November 06, 2012 08:14 AM
To: IBM-MAIN@LISTSERV.UA.EDU IBM-MAIN@LISTSERV.UA.EDU
Subject: multi-volume SMS file allocation
Hello list,
Does anybody know if/how
looking for the best way to optimize the allocation for an existing
multi-volume application.
Thanks for your input anyway.
- Original Message -
From: DEBERT Jean-Louis [mailto:jl.deb...@rsd.com]
Sent: Tuesday, November 06, 2012 08:42 AM
To: IBM-MAIN@LISTSERV.UA.EDU IBM-MAIN@LISTSERV.UA.EDU
Hello list,
I have an application that may have to write DASD files very variable in size.
These files are dynamically allocated as SMS managed files (using DALSTCL,
DALMGCL and DALDACL) and with text unit DALRLSE (equivalent of the RLSE JCL
keyword) so that unused space is released from the
Staller, Allan wrote:
snip
It sounds like you are not using Dynamic Volume Count or Partial Space release.
Dynamic volume count allocates the 1st extent on the 1st volume and dynamically
adds volumes to the list, up to the architectural max of 59. It is not
necessary to specify (for example) 10
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