Quantum 1200 Series DAT Autochanger Uživatelská příručka stáhnout pdf (Strana 99)

SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-57

4.8.8 Read / Write Compression Log Page (32h)

This page begins with a 4-byte header followed by the log parameter blocks of 6 or 8 bytes, depending

on the parameter code selected.

Figure 4-29. Read / Write Compression Ratio LOG SENSE Page — Header Format

Figure 4-30. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 00h and 01h)

Bit

Byte

7 6 5 4 3 2 1 0

0 Page Code (32h)

1 Reserved

2 – 3

(MSB)

Additional Length

(LSB)

Table 4-34. Read / Write Compression Ratio LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Additional Length Specifies the number of bytes available and depends on the parameters

requested.

Bit

Byte

7 6 5 4 3 2 1 0

0 –1

(MSB)

Parameter Code

(LSB)

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (02h)

4 – 5

(MSB)

Compression Ratio x 100

(LSB)

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 293 294

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Quantum 1200 Series DAT Autochanger Uživatelská příručka Strana 99