Reference Guide

Chapter 4 SCSI Commands
READ ATTRIBUTE Command (8Ch)
DLT-S4 Interface Reference Guide 251
Table 142 MEDIUM USAGE
HISTORY Attribute Parameter
Data — Field Descriptions
Field Description
Current
Amount of
Data Written
Indicates the amount of data physically written to the medium during this load of the
medium. This value is expressed in increments of 1,048,576 bytes; that is, a value of 1
means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Current Write
Retries Count
Indicates the total number of times the drive performed a Write retry during this load
of the medium.
Current
Amount of
Data Read
Indicates the amount of data physically read from the medium during this load of the
medium. This value is expressed in increments of 1,048,576 bytes; that is, a value of 1
means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Current Read
Retries Count
Indicates the number of times the drive performed a Read retry during this load of the
medium.
Previous
Amount of
Data Written
Indicates the amount of data physically written to the medium during the previous
load of the medium. This value is expressed in increments of 1,048,576 bytes; that is, a
value of 1 means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Previous
Write Retries
Count
Indicates the total number of times the drive performed a Write retry during the
previous load of the medium.
Previous
Amount of
Data Read
Indicates the amount of data physically read from the medium during the previous
load of the medium. This value is expressed in increments of 1,048,576 bytes; that is, a
value of 1 means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Previous Read
Retries Count
Indicates the number of times the drive performed a Read retry during the previous
load of the medium.
Total Amount
of Data
Written
Indicates the amount of data physically written to the medium since the last medium
format. This value is expressed in increments of 1,048,576 bytes; that is, a value of 1
means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Total Write
Retries Count
Indicates the total number of times the drive performed a Write retry since the last
medium format.
Total Amount
of Data Read
Indicates the amount of data physically read from the medium since the last medium
format. This value is expressed in increments of 1,048,576 bytes; that is, a value of 1
means 1,048,576 bytes, 2 means 2,097,152 bytes, and so on.
Total Read
Retries Count
Indicates the number of times the drive performed a Read retry since the last medium
format.