RE: two headered tape

["Reeve Fritchman" <reeve@xxxxxxxxxx>]

Yes.  The HDR1 and HDR2 are 80-character records.  There's a VOL1 label as
well; this is the tape volume label and it's how a labeled tape is
identified.  A standard labeled tape has VOL1, HDR1, HDR2, tape mark (an
electronic fart on the tape), data (blocked records), tape mark, EOF1, and
EOF2.

Use the DMPTAP TYPE(*ALL) command to see what's actually on the tape.

-----Original Message-----
From: midrange-l-admin@midrange.com [mailto:midrange-l-admin@midrange.com]On
Behalf Of Joel Fritz
Sent: Friday, March 08, 2002 12:55 PM
To: 'midrange-l@midrange.com'
Subject: RE: two headered tape

Does this apply to a tape that contains one file?

This was purportedly a standard label tape.
> -----Original Message-----
> From: Reeve Fritchman [mailto:reeve@ltl400.com]
> Sent: Thursday, March 07, 2002 9:37 AM
> To: midrange-l@midrange.com
> Subject: RE: two headered tape
>
>
> You'll get HDR1 and HDR2; those have record length, block
> length, file name
> information, etc.; these blocks (as well as EOF1 and EOF2)
> are created by
> [OS/400] tape management.  Use *BLP ("bypass label
> processing") to skip
> checking this stuff if you're getting labeled tapes unless
> you know the file
> name, etc. and like the security of having tape management
> confirm the right
> tape is loaded.
>
> Otherwise, make sure the tape wasn't created with some funky
> backup utility;
> you might be looking at application control information.
>
> -----Original Message-----
> From: midrange-l-admin@midrange.com
> [mailto:midrange-l-admin@midrange.com]On
> Behalf Of Joel Fritz
> Sent: Thursday, March 07, 2002 12:17 PM
> To: MIDRANGE-L@midrange. com (E-mail)
> Subject: two headered tape
>
> We still get a lot of stuff on tape.  The guy who sits next
> to me came up to
> me this morning and asked "How many headers does a tape
> usually have?"  Then
> he showed me the DMPTAP report on the first block and the
> header.  The tape
> he was working with seems to have two headers, neither of
> which describe the
> first block.  We're going to get another one--it's not
> critical that we get
> the information off this particular tape. My question is "How
> did it get
> that way?"
> _______________________________________________
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