DSM/Tape Catalog Operator Interface (MEDIACOM) Manual

DSM/Tape Catalog Operator Interface (MEDIACOM) Manual—429828-010
A-1
A Tape Label Formats
A labeled tape contains records at the beginning of the tape that identify the tape and
the files on the tape. DSM/TC can handle ANSI and IBM-MVS standard labeled tapes.
ANSI Standard Labels
An initialized ANSI tape, as defined in the ANSI standard, contains:

A beginning-of-volume label (VOL1)

A beginning-of-file-section label group (HDR1, HDR2)

Two tape marks

An end-of-file label group (EOF1, EOF2)

Two tape marks
Beginning-of-Volume Label
The word Spaces in the Content column indicates fields that HP does not support.
Topic Page
ANSI Standard Labels
A-1
IBM-MVS Standard Labels A-3
Table A-1. ANSI VOL1 Label
Character
Position Field Name
Length in
Bytes Content
1 to 3 Label Identifier 3 VOL
4 Label Number 1 1
5 to 10 Volume Identifier 6 Name of this tape
11 Accessibility 1 Space
12 to 24 Reserved for Future Standardization 13 Spaces
25 to 37 Implementation Identifier 13 Spaces
38 to 51 Owner Identifier 14 Owner of this tape
52 to 79 Reserved for Future Standardization 28 Spaces
80 Label-Standard Version 1 3