SCSI Commands
Page
23
then that page is returned. Otherwise, Check Condition status is returned. The
Sense Key is set to Invalid Request (5) and the additional Sense to Invalid Field in
CDB (2400).
Standard Inquiry Data Page
Byte
Bits
7
6
5
4
3
2
1
0
0
Peripheral Qualifier
Peripheral Device Type
1
RMB
Reserved
2
Version
3
AENC
Obsolete NACA
HiSup
Response Data Format
4
Additional Length
5
Reserved
6
Bque
EncSrv
VS
MuiltiP
MChngr
Obsolete
Adr16
7
RelAdr
Obsolete WBs16
Sync
Linked
TransDis CmdQ
VS
8 – 15
Vendor Identification
16 – 31
Product Identification
32 – 35
Product Revision Level
36 – 55
Vendor Specific
Field Descriptions
Field
Bytes
Bits
Description
Peripheral
Qualifier
0
5-7
Always 000b.
Peripheral
Device
Type
0
0-4
Normally 01h to indicate a sequential access device.
7Fh indicates that a logical unit is not present. This value is re-
turned when an invalid LUN was in the last Identify message.
RMB
1
7
Always 1, indicating Removable Media.
Version
2
Always 3
AENC
3
7
Always 0, indicating Asynchronous Event Notification Capability is
not supported.
NACA
3
5
Always 0, indicating Normal ACA (NACA) is not supported.
HiSup
3
4
Always 0, indicating Hierarchical Support is not supported.
Response
Data For-
mat
3
0-3
Always 2, indicating support of the SCSI-2 standard.
Additional
Length
4
Always 33h, indicating that 51 bytes of additional Inquiry command
parameters follow, beginning in Byte 5. This value does not change
if the Allocation Length in the CDB is too small or too large to ac-
commodate the entire response.
Bque
6
7
Always 0, indicating Basic Queuing is not supported.
EncSrv
6
6
Always 0, indicating Enclosure Services is not supported.
VS
6
5
Always 0, indicating this feature is not supported.
MuiltiP
6
4
0 = Multiple Interface Ports not available (SCSI drives)
1 = Multiple Interface Ports are available (Fibre Channel drives).
MChngr
6
3
Always 0, indicating Medium Changer is not supported.
Adr16
6
0
0 = 16 Bit Address not available (non-SCSI drives)
1 = 16 Bit Address supported (SCSI drives only)
RelAdr
7
7
Always 0 because Relative Addressing is not supported.
WBs16
7
5
0 = Wide Bus16 not available (non-SCSI drives)
1 = Wide Bus16 supported (SCSI drives only)
