DSM/Tape Catalog Operator Interface (MEDIACOM) Manual

Tape Label Formats
DSM/Tape Catalog Operator Interface (MEDIACOM) Manual—429828-010
A-2
Beginning-of-File-Section Labels
Beginning-of-File-Section Labels
The word Spaces in the Content column indicates fields that HP does not support.
Table A-2. ANSI HDR1 Label
Character
Position Field Name
Length
in Bytes Content
1 to 3 Label Identifier 3 HDR
4 Label Number 1 1
5 to 21 File Identifier 17 Tape file ID
22 to 27 Fileset Identifier 6 Tape name that identifies the entire
tape set
28 to 31 File Section Number 4 A number that identifies the order of a
tape within a multitape tape set
32 to 35 File Sequence Number 4 A number that identifies the order this
tape file was written to the tape set
36 to 39 Generation Number 4 A number indicating the absolute
generation number of this file
40 to 41 Version Number 2 A number indicating the version of
this generation
42 to 47 Creation Date 6 Year and day of the year this file was
created
48 to 53 Expiration Date 6 Year and day of the year this file can
be scratched or overwritten
54 Accessibility 1 Space
55 to 60 Block Count 6 Number of blocks written in this file
section
61 to 73 Implementation Identifier 13 Spaces
74 to 80 Reserved for Future
Standardization
7Spaces
Table A-3. ANSI HDR2 Label (page1of2)
Character
Position Field Name
Length
in Bytes Content
1 to 3 Label Identifier 3 HDR
4 Label Number 1 2
5 Record Format 1 F (fixed length)
U (undefined length)
6 to 10 Block Length 5 Number of bytes per block
11 to 15 Record Length 5 Number of bytes per record