4.1 Control/Sense Commands

a.Qualifier field

(0,0,0): The specified logical unit shows the type of input/output device shown in the "Device Type Code" field. Even if this code is reported, it does not mean that that logical unit is in the ready state.

(0,0,1): The specified logical unit shows the type of input/output device shown in the "Device Type Code" field, but it shows that an actual input/output device is not connected to that logical unit. The HDD does not report this code.

(0,1,1): Shows that the specified logical unit is not supported. When this code is reported, it X '1F' is shown in the "Device Type Code" field.

b.Device type code

(0,0,0,0,0): Direct access device

(1,1,1,1,1): Undefined device

c.RMB bit

When this bit is "1," it indicates that the storage media is a removable disk device. The HDD is a fixed disk device, so this bit is always reported as "0."

d.Version

The VERSION field indicates the implemented version of this standard and is defined below.

Table 4.2 VERSION field

Code

Description

 

 

 

X'01'

ANSI X3.131: 1986

(SCSI-1)

 

 

 

X'02'

ANSI X3.131: 1994

(SCSI-2)

 

 

 

X'03'

ANSI X3.301: 1997

(SPC Rev.11)

 

(HDD always Responds this value.)

X'04'

T10/1236-D (SPC-2)

 

 

 

 

C141-C013

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Fujitsu MBA3147RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3073RC specifications Version field