Radoslaw,

As Greg indicated, this WWID field is for use with a 3592/WORM cartridge.
You may or may not need an upgrade to your 3592 devices; but the cartridges
themselves are unique. As WORM indicates, they are Write-ONCE-Read-Many (the
ONCE being the key). After you have written data to them you can MOD onto
the last file or add additional files. But the tape can never go scratch and
be re-used. Once you have data written, that data will remain until the tape
is destroyed. And NEVER use a utility that writes its own EOV records; once
EOV's have been written the tape is 100% full (even if its not) and nothing
further can be put onto the cartridge. MVS will not allow a new secondary
file to be placed behind the EOV records and MVS will not allow you to MOD
onto a file that ends with EOV records.

Russell Witt
CA-1 Level-2 Support Manager

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED]
Behalf Of R.S.
Sent: Friday, May 19, 2006 1:36 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: RMM & World Wide ID

Mike,
I also noticed WWID field (although through PTF on system 1.4).
What hardware supports those ID's ?
Where can we find further information ?

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