![background image](http://html2.mh-extra.com/html/quantum/dlt-s4/dlt-s4_reference-manual_3531879282.webp)
Chapter 4 SCSI Commands
READ ATTRIBUTE Command (8Ch)
DLT-S4 Interface Reference Guide
248
INITALIZATION COUNT:
Indicates the number of times that a drive has
logically formatted the medium. This figure is cumulative over the life of
the medium and is never reset.
DEVICE VENDOR/SERIAL NUMBER AT LAST LOAD, DEVICE VENDOR/
SERIAL NUMBER AT LOAD–1, DEVICE VENDOR/SERIAL NUMBER AT
LOAD–2
and
DEVICE VENDOR/SERIAL NUMBER AT LOAD–3:
Provides a
rolling history of the last four drives in which the medium has been
loaded. The format of the attributes is shown in
figure 124
.
Figure 124 DEVICE VENDOR/
SERIAL NUMBER Attribute —
Data Format
Table 140 DEVICE VENDOR/
SERIAL NUMBER Attribute
Parameter Data — Field
Descriptions
TOTAL MBYTES WRITTEN IN MEDIUM LIFE and
TOTAL MBYTES READ IN MEDIUM LIFE:
Indicates the total number of
data bytes transferred to or from the medium surface, after any data
compression has been applied, over the entire medium life. These values
are cumulative and are never reset. These values are 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.
Bit
7
6
5
4
3
2
1
0
Byte
0 — 7
(MSB)
Vendor Identification (ID)
(LSB)
8 — 39
(MSB)
Product Serial Number
(LSB)
Field
Description
Vendor ID
Contains the same value returned in the
STANDARD INQUIRY
data.
Product Serial Number
Contains the unit serial number.