The first physical file on a standard labeled tape is the label. It is
lrecl=blksize=80. The first record is the VOL1 header. The second record
is the HDR1, which describes file 2 on the tape. 
The second physical file on the tape is the first user file.

Dennis Roach
GHG Corporation
Lockheed Martin Mission Services
Flight Design and Operations Contract
NASA/JSC
Address:
   2100 Space Park Drive 
   LM-15-4BH
   Houston, Texas 77058
Mail:
   P.O. Box 58487
   Mail Code H4C
   Houston, Texas 77258
Phone:
   Voice:  (281)336-5027
   Cell:   (713)591-1059
   Fax:    (281)336-5410
E-Mail:  [email protected]

All opinions expressed by me are mine and may not agree with my employer
or any person, company, or thing, living or dead, on or near this or any
other planet, moon, asteroid, or other spatial object, natural or
manufactured, since the beginning of time.


> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]] On
> Behalf Of Rafa Pereira
> Sent: Wednesday, April 01, 2009 12:20 PM
> 
> John Kelly  wrote:
> 
> >Been a while since I did stand alone DSS restores. I see that DSS now
has
> >a FILE parameter which can specify the file number from the beginning
of
> >the tape. I would assume the number is tape marks, ie with standard
label
> >tape file 1 would be FILE(2). Does anyone know, rather than guess
like I
> >did?
> 
> IIRC, with standard label tapes, the value in the FILE parameter
corresponds
> to the file sequence number of the dataset within the tape. So, the
first
> dataset in the tape would be FILE(1), which is the default.
> 
> Regards.
> 
> Rafa.

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