Quantum 1200 Series DAT Autochanger Guia do Utilizador descarregar pdf (Página 209)

SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-167

LOAD COUNT: Indicates how many times this medium has been fully loaded. The drive does not

reset this attribute.

MAM SPACE REMAINING: Indicates the space currently free in the medium auxiliary memory.

The total medium auxiliary memory capacity is reported in the MAM CAPACITY attribute (see

“MAM CAPACITY:” on page 4-176).

You cannot always use all of the free space in a particular medium auxiliary memory implementation.

Depending on the internal organization of the memory and the software that controls it, fragmentation

issues may mean that certain attribute sizes might not be fully accommodated as the medium auxiliary

memory nears its maximum capacity.

FORMATTED DENSITY CODE: If the drive formats the medium using a format other than the

one specified in the MEDIUM DENSITY CODE attribute (for example, for compatibility with a

previous generation format), the FORMATTED DENSITY CODE specifies the DENSITY CODE of

the format chosen. Otherwise, this attribute is the same as the MEDIUM DENSITY CODE.

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 4-90.

Figure 4-90. DEVICE VENDOR/SERIAL NUMBER Attribute — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 – 7

(MSB)

Vendor Identification (ID)

(LSB)

8 – 39

(MSB)

Product Serial Number

(LSB)

1 2 ... 204 205 206 207 208 209 210 211 212 213 214 ... 293 294

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