A reservation may only be released by the initiator that made it. It is not an error to attempt to release reservation that is currently valid or is held by another initiator. In this case, the target shall return GOOD status without altering any other reservation.

3rdPty:0b (Reserved)

Third Party Device ID: 000b (Reserved)

TEST UNIT READY Command

The TEST UNIT READY command (Table 3.10) provides a means to check if the logical unit is ready. This is not a request for a selftest. If the logical unit would accept an appropriate command without returning CHECK CONDITION status, this command shall return a GOOD status. If the logical unit cannot become operational the target shall return CHECK CONDITION status with a sense key of

NOT READY.

Table 3.10 TEST UNIT READY Command

Bit

7

6

5

4

3

 

2

 

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

Operation Code (00h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Logical Unit Number

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

Reserved

 

 

 

 

 

3

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

Control

 

 

 

 

 

INQUIRY Command (See ANSI SCSI-2 7.2.5)

The INQUIRY command (Table 3.11) requests that information regarding parameters of the target and its attached peripheral device(s) be sent to the initiator. An option allows the inititor to request additional information about the target or logical unit (See ANSI SCSI-2 7.2.5.2 Vital Product Data).

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M3099GX/GH OEM Manual