Powerhouse HPe3000 Report Limit

Johnson, Tracy Tracy.Johnson@trw.com
Fri, 21 Jul 2000 15:49:01 +0100


On the Powerhouse list, the topic of fixed REPORT LIMITs on the
HPe3000 version versus the NOLMIT option on VAX and HP-UX versions
appeared:

This may sound simplistic, only because I do not know how the 
HPe3000/POSIX domain compares with the HP9000/HP-UX domain, 
so here goes:  

They why can't Powerhouse just create the file in the POSIX 
domain, with uppercase characters?

It would look and feel just like the MPE/iX domain.  Except that
Unix-like behavior would apply.  Such as the NOLIMIT option.

Am I wrong here or is this just too simple?  Am copying this to
the HP3000 List.  Perhaps they'll guide me further.

> -----Original Message-----
> From: Hamilton, Allison [mailto:Allison.Hamilton@Cognos.COM]
> 
> OpenVMS dynamically extends files as it requires space, to 
> the limit of the disc space available. (I believe that UNIX 
> is the same.) MPE/iX pre-allocates file limits and then eats 
> up space as it requires it to that limit, but not beyond, 
> thus the requirement for a max expected size on
> MPE/iX machines. Yes, there may be products that go in a 
> twiddle the file system to bypass this restriction, but the 
> file system doesn't support it directly.  This is why OpenVMS 
> and UNIX have NOLIMIT, and MPE/iX does not.

Tracy M. Johnson
TRW Automotive Electronics
Sensors & Components

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