Paul,
Thanks for reviewing the define cluster. I checked, there is about 7,000
cylinders on the volume. Many thanks.
On Tuesday, 27 November 2018, 11:22:16 am GMT-5, Feller, Paul
<[email protected]> wrote:
John, your definition should work just fine. It has been a while that I
looked at HSM control files so I did a little testing. Depending on how much
space you have on your HSM002 volume you could go as high as 5,800 cyls. With
that size you would get a HI-A-RBA of 4262952960. Depending on how you do the
calculation you would get around 3.97 gig.
Just as a side note the MCDS can be an extended format dataset.
Thanks..
Paul Feller
AGT Mainframe Technical Support
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of John Dawes
Sent: Tuesday, November 27, 2018 8:52 AM
To: [email protected]
Subject: Re: SMS ALLOCATION OF VSAM DSN [EXTERNAL]
Paul,
Thanks for the info. I am trying to define the HSM MCDS at a maximum number of
cylinders. Below is the DEFINE CLUSTER:
DEFINECLUSTER -
(NAME(PROD..HSM.MCDS) VOLUME(HSM002) -
CYLINDER(4300 0) -
RECORDSIZE(435 2040) FREESPACE(0 0)-
SPEED BUFFERSPACE(530432) -
INDEXED KEYS(44 0) SHAREOPTIONS(3 3)-
UNIQUE NOWRITECHECK) -
DATA (NAME(PROD..HSM.MCDS.DATA) CISZ(12288) ) -
INDEX (NAME(PROD..HSM.MCDS.INDEX) CISZ(2048)) I think I am safe. What says
you?
On Monday, 26 November 2018, 7:15:32 pm GMT-5, Feller, Paul
<[email protected]> wrote:
John, basically you are limited to 4 gig (HI-A-RBA) for the size of a
non-extended VSAM dataset. So depending on your VSAM define option you will
get somewhere in the neighborhood of 6,000 cyls. In my quick test I got around
5,800 cyls.
Thanks..
Paul Feller
AGT Mainframe Technical Support
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of John Dawes
Sent: Monday, November 26, 2018 12:30 PM
To: [email protected]
Subject: SMS ALLOCATION OF VSAM DSN [EXTERNAL]
G'Day,
Could somebody please tell me what is the maximum number of cylinders that
could be allocated for a SMS managed VSAM dsn (not VSAM EXTENDED
ADDRESSABILITY). I have been able to allocate a dsn with 6,000 cylinders.
However, due to a lack of disk space I couldn't continue with a higher
allocation.
Thanks.
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