
102 Commands
The Available Data field specifies the length in bytes of the following data. If
the amount of parameter data sent to the application client is reduced due to
insufficient allocation length, the Available Data field shall not be altered.
A two-byte Attribute ID is returned for each attribute available on the device
server. See “Attribute ID Values” on page 104 for a description of the Attribute
ID values.
Partition List Service Action
The Partition List service action is used to report the number of partitions that
the device server supports for the specified volume. The Partition Number and
Attribute fields in the CDB are ignored. The information returned is as follows:
The First Partition Number is the first partition available on the specified
volume. Since Ultrium drives do not support multiple partitions, this is 0.
The Number of Partitions Available indicates the number of partitions
available on the specified volume. Since Ultrium drives do not support multiple
partitions, this is 1.
Volume List Service Action
The Volume List service action is used to report the number of volumes that the
device server supports. The Volume Number, Partition Number and Attribute
fields in the CDB are ignored. The information returned is as follows:
The First Partition Number is the first volume. Since Ultrium drives do not
support multiple volumes, this is 0.
7 6 5 4 3 2 1 0
0
(MSB)
Available Data (2)
1
(LSB)
2
First Partition Number (0)
3
Number of Partitions Available (1)
7 6 5 4 3 2 1 0
0
(MSB)
Available Data (2)
1
(LSB)
2
First Volume Number (0)
3
Number of Volumes Available (1)