Quantum 1200 Series DAT Autochanger Podręcznik Użytkownika Pobierz pdf (Strona 138)

MODE SELECT (6) / (10) Command (15h / 55h) SDLT 600 SCSI Interface Guide

4-96 January 2005 81-81200-02 REV A01

Table 4-56. Vendor Specific Configuration MODE SELECT Page — Field Descriptions

Field Name Description

PS Parameters Savable. Must be set to 0.

Page Code Identifies the type of MODE SELECT page being transferred. A value

of 25h identifies this as the Vendor Specific Configuration Page.

Page Length Indicates the number bytes in the page, excluding bytes 0 and 1. The

length is returned in MODE SENSE commands and must subsequently

be set to the same value when performing MODE SELECT. If the drive

receives an unexpected page length value, it returns a CHECK

CONDITION status with the Sense Key set to ILLEGAL REQUEST.

Default Density

Override

The following density codes are the preferred codes used to define

density.

Code Description

00h Density override disabled.

4Ah 233,000 bpi, 40 logical tracks, serial cartridge tape

300.0 GB / 600.0 GB (Super DLTtape II).

This 1-byte field holds the setting of the density desired

on a Write From BOT. It can be set at any time, but is

zeroed out during a tape cartridge load. Therefore, for

the override to be meaningful, it must be set after the

cartridge is loaded. After being set, its value overrides

any application resetting the drive to default density (0)

with the MODE SELECT command.

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Quantum 1200 Series DAT Autochanger Podręcznik Użytkownika Strona 138