Jason,

Having 59 stripes will not solve your problem.

If any of the stripes needs to extend to a new volume then you will still
get an E37. Using a wider stripe simply means you have a better chance of
getting many, small primary allocations: it does not resolve the problem.

The way to resolve this has already been mentioned. You must allocate the
primary space to be greater than or equal to the required size of the
dataset. In addition you should remove striped datasets from any primary
space reduction rules so that the primary allocation is not neutered at the
get go.

For striped, sequential data sets the secondary extents should rarely be
required. If you see you are getting more than two or three extents beyond
the primary space request then you should increase the primary space
requested.

Ron

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
> Behalf Of Jason To
> Sent: Monday, April 07, 2008 6:39 PM
> To: [email protected]
> Subject: Re: [IBM-MAIN] Sequential Data Striping
> 
> Thanks for all your response. You're all been very helpful. I have
> another
> question. If I enabled the guaranteed space with a big unit count, will
> it
> prevent the E37 abend? I somehow noticed that using the SDR allocation
> if
> one of the striped volume can't extend it will abend E37.
> 
> David, how did you code your ACS routine to select different storage
> classes? Can you send me a sample?  TIA.
> 
> Regards,
> Jason
> 

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