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Max Space of primary and secondary

 
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suriya
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Joined: 19 Apr 2006
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PostPosted: Thu Dec 21, 2006 8:05 pm    Post subject: Max Space of primary and secondary
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Hi all,

If any one knows the max space quantity allocated for the Primary and secondary quantity for PS or PDS
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prasaar

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Joined: 11 Dec 2006
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Location: India

PostPosted: Fri Dec 22, 2006 3:36 pm    Post subject: Re: Max Space of primary and secondary
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Hi,

The MAX space that u can allocate for a DS depends on the storage medium and the space available on that volume.

In DASD 3390 model, you have 1,2,3,27. If your shop is using 3390-3, then you will have 3330 cylinder's of space available for that empty volume.

Space allocation happens in extents, to allocate the maximum primary space for a DS in a DASD volume, check the largest free # of cylinders available and use that number to create the DS with a large primary qty. The secondary space is not contiguous(there are parameters in SPACE that can be used to ask for contiguous space) and hence, the maximum, qty only depends on the storgae size of your shop.

Hope this helps.

Rgds,
Arun Prasad
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prakash.ammasi

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PostPosted: Thu Aug 09, 2007 10:56 am    Post subject:
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Space Parameter :
U can calculate the , [Space Parameter = No of records * record length]which gives u Total Bytes occupied by the File. From this u allocate the File using TRKS.
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expat

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Joined: 14 Mar 2007
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Location: Back in jolly old England

PostPosted: Thu Aug 09, 2007 9:45 pm    Post subject:
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The maximum number of tracks that can be alloacted to any dataset on any one volume is 65536.

So in effect the maximum number you can allocate to your dataset is 59 (max number of volumes allowed for DASD) * 65536 tracks.
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