We do that (well the FOCUS "os bridge" is what is doing it but it is o/s
sim under the covers).
Mod 9's today, but probably mod 27's by like Monday since their stuff
just ran outta space.
Just make sure you are doing "set shared on" on the volumes and define
them as full pack (0 END) in the directory and r/o from VM.
Marcy Cortes
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-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Lee Stewart
Sent: Thursday, May 29, 2008 8:03 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: [IBMVM] CMS OS Sim reading LARGE z/OS flat files
I have a customer who currently uses an FTP-like process to move a large
amount of data from z/OS to VM regularly, where it's then put into a
database on VM...
From what we know so far, the data is written out to a giant flat file
on z/OS, then transferred and imported into the database on VM. (It's
not DB2, but so far not sure just what it is.) The flat file can be up
to about 40K records, and each record can be up to 3K long...
In talking about their hardware configs, while they are separate systems
today, it occurred to us that we could cable the VM system to the z/OS
DASD and read the file directly on VM -- thus eliminating the overhead
and delay of sending it over IP, no matter how fast the connection.
It would mean changing their process to write a single file to a single
volume, as opposed to today where z/OS just writes it as a multi-volume
dataset across whatever free space. That would probably take either a
3390-27 or maybe a -54...
So Does anyone have any experience using the CMS OS simulation
stuff to read giant z/OS files? I know a CMS formatted minidisk can
only go up to 32K cylinders, but haven't found any mention of limits for
the OS simulation stuff.
(Keep in mind it's almost always easier to change the VM end of the
process.)
Thanks for any thoughts
Lee
--
Lee Stewart, Senior SE
Sirius Computer Solutions
Phone: (303) 798-2954
Fax: (720) 228-2321
Email: [EMAIL PROTECTED]
Web: www.siriuscom.com
