User Guide

6-32 Ampex 1308911-02
Model No.
Running Head
dd2_query_tape DD-2 Utilities Manual Pages
Partial Indicates a partially-formatted tape, also called "format
group A only." Only the first set of group A partitions is
formatted. The set of group A partitions is followed by a
single group B partition that occupies the remainder of the
tape and is formatted on the fly during I/O operations.
Initialize Indicates a tape that is initialized but not formatted. The
tape holds only a single group A partition that occupies the
entire tape and is formatted on the fly during I/O operations.
%volid The volume ID in the VFI area on the tape. This is an arbitrary 6-byte
value. The %volid field name displays the volume ID as an ASCII
string on output. This field causes all bytes to be displayed, even control
characters and other "unprintable" characters. If the volume ID contains
unprintable characters, you might want to use the %hexvolid field
name instead.
%hexvolid The volume ID in the VFI area on the tape. This is an arbitrary 6-byte
value. The %hexvolid field name displays the volume ID as a 12-digit
hex value on output.
%asize Type A partition size in physical blocks. A value of zero means the
partition takes up the remainder of the tape. If not zero, this value is 235
or greater. Note that 35 physical blocks of each partition are reserved for
system use, leaving a minimum value of 200 physical blocks (roughly
240 million bytes). Not valid if format type is Initialize.
%acount Number of type A partitions per partition pattern. Not valid if the format
type is Initialize.
%bsize Type B partition size in physical blocks. A value of zero means the
partition takes up the remainder of the tape. If not zero, this value is 235
or greater. Note that 35 physical blocks of each partition are reserved for
system use, leaving a minimum value of 200 physical blocks (roughly
240 million bytes). Not valid if the format type is Initialize of Partial.
%bcount Number of type B partitions per partition pattern. A zero value indicates
that the tape contains no type B partitions. Not valid if the format type
is Initialize of Partial.
%layout System zone layout, specified as one of the following strings:
Alternate - Specifies that partitions and system zones alternate. No
system zones are located within any partition. If there is not enough
space for a full partition between the last system zone and the End of
Tape (EOT), the remaining space is not used.