Quantum DLT-S4 Guia do Utilizador descarregar pdf (Página 282)

100

101

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.

1 2 ... 277 278 279 280 281 282 283 284 285 286 287 ... 385 386

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