Reference Guide

Chapter 4 SCSI Commands
READ ATTRIBUTE Command (8Ch)
DLT-S4 Interface Reference Guide 252
PARTITION USAGE HISTORY: Provides statistics (see figure 125) for the
partition specified by the Partition Number field in the CDB. If a field is
not used, it is set to 0.
Figure 125 PARTITION
USAGE HISTORY Attribute —
Data Format
Load Count Indicates the number of loads since the last medium format. This count accumulates
over the life of the medium but it is reset to 0 after a medium format.
Total Change
Partition
Count
Indicates the number of times that switches between partitions have been performed
on the medium. Must be set to 0. Super DLTtape media comprises a single volume.
Total Partition
Initialize
Count
Indicates number of times that any of the partitions on the medium have been erased.
This count accumulates over the life of the medium but it is reset to 0 after a medium
format.
Bit
7 6 5 4 3 2 1 0
Byte
0 — 3
(MSB)
Current Amount of Data Written
(LSB)
4 — 7
(MSB)
Current Write Retries Count
(LSB)
8 — 11
(MSB)
Current Amount of Data Read
(LSB)
12 — 15
(MSB)
Current Read Retries Count
(LSB)
16 — 19
(MSB)
Previous Amount of Data Written
(LSB)
Field Description