Read Block Limits Command; Table 141 Read Block Limits Command Descriptor Block - Data Format; Table 142 Read Block Limits Command -Field Descriptions - Quantum LTO 2 User Manual

READ BLOCK LIMITS Command

Table 141 READ BLOCK
LIMITS Command Descriptor
Block — Data Format
Table 142 READ BLOCK
LIMITS Command —Field
Descriptions
LTO-2 SCSI Interface Guide
The
READ BLOCK LIMITS
maximum and minimum block sizes that it supports. The minimum
block length is always reported as 1 byte, the maximum as 2
Bit
7
Byte
0
Ignored LUN
1
2
3
4
5
Field Bytes
Operation 0
Code
Ignored 1
Logical
Unit
Reserved
Control 5
The host specifies the actual block size in fixed mode with the
command and in variable mode with the transfer/allocation
SELECT
length of and
READ WRITE
command determines the current block size. The
command indicates the minimum and maximum block size that the drive
can support.
command requests that the drive return the
6 5 4
Operation Code (05h)
Reserved
Reserved
Reserved
Control
Bits Description
The Operation Code for
is 05h
LIMITS
5-7 The LUN field is vestigial from the
SCSI-1 standard and is ignored.
All reserved bits must be 0.
See Control Byte Format on page
commands. The use of the
Chapter 2 SCSI Commands
READ BLOCK LIMITS Command
24
-1 bytes.
3 2 1
Reserved
READ BLOCK
MODE
MODE SENSE
READ BLOCK LIMITS
2
0
29.
177