Dell PowerVault TL2000 User Manual download pdf (Page 90)

REQUEST SENSE (03h)

The REQUEST SENSE command tells the library to transfer sense data to the initiator.

Bit 7 6 5 4 3 2 1 0

Byte

0 Operation Code (03h)

1 LUN Reserved

2 Reserved

3 Reserved

4 Allocation Length

5 Control

Field descriptions:

Allocation length:

This field specifies the maximum sense data length the hosts wants to receive.

The sense data is valid for a check condition status returned on the previous command. The sense data

bytes are preserved by the library until retrieved by the REQUEST SENSE command from the same

initiator.

If the media changer receives a REQUEST SENSE command, it returns up to 18 bytes of Sense Data

with the appropriate values in the Sense Key, Additional Sense Code, and Additional Sense Code

Qualifier.

Bit 7 6 5 4 3 2 1 0

Byte

0 Valid (0) Response code (70h)

1 Segment number

2 Filemark EOM ILI Reserved Sense Key

3 - 6 Information

7 Additional sense length (0Ah)

8 - 11 Reserved

12 Additional sense code

13 Additional sense code qualifier

14 Reserved

15 SKSV C/D Reserved BPV Bit Pointer

16 (MSB) Field Pointer

17 (LSB)

Field descriptions

Valid: A Valid bit of one indicates that the Information field contains valid information as defined in the

SCSI specification. This bit is set to 0.

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Dell PowerVault TL2000 User Manual Page 90