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Maximum how many extents possible for sequential file and VS

 
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youayshu
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PostPosted: Wed Mar 21, 2007 9:36 am    Post subject: Maximum how many extents possible for sequential file and VS
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Hi allll.........

Maximum how many extents possible for sequential file and VSAM files?
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guptae

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PostPosted: Wed Mar 21, 2007 10:46 am    Post subject:
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Hi There,

Topic is already discussed

http://www.ibmmainframes.com/viewtopic.php?t=14414&highlight=extents+sequential+file

Please use search utility befor posting a new thread
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expat

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PostPosted: Wed Mar 21, 2007 1:35 pm    Post subject:
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I would like to add that in the referred post, it is said that the secondary allocation can be satisfied by up to three extents.

This was changed a lot of years ago to be five extents. So in effect if you allocate your dataset on a fragmented volume, e.g. (CYL(100,100),RLSE)it may take 5 extents to satisfy the primary allocation, a further five for the first secondary, five more for the second secondary, and Sx37 when attempting to add the third secondary allocation.
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