User's Manual

IBM OS/360 AND DOS/360 STANDARD LABELED TAPES
XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL 2-5
VOL1 label
This label is always the first record on a tape. The format is described
in table 2-3.
VOL2 through VOL8 labels
These labels are optional under DOS/360 and are bypassed by the
Xerox/OSS.
Table 2- 3. VOL1 label (IBM tapes)
Name
Character
position(s)
Field Description
Label identifier 1-3 1 This is the 3-character identifier VOL.
Label number 4 2 This is the number 1.
Volume serial number 5-10 3 This is an identification code assigned to the volume
when it enters the system.
Reserved 11 4 Zero.
VTO pointer (direct access
only)
12-21 5 Blanks.
Reserved 22-31 6 Blanks.
Reserved 32-41 7 Blanks.
Owner name and address
code
42-51 8 This identifies the owner of the volume.
Reserved 52-80 9 Blanks.