Inquiry (12h)
Inquiry (12h) requests information about library parameters.
Note:
The Inquiry command returns Check Condition (02h) status only when it cannot return the requested data. This command will not clear any pending unit attention conditions.
- CmdDt (Command Support Data - not supported)
-
Set this to 0.
- EVPD (Enable vital product data)
-
0 = Requests standard inquiry data
1 = Requests vital support product data
- Page Code
-
If EVPD is 0, set the page code to 00h.
If EVPD is 1, set the page code to:
-
00h = Supported vital product page
-
80h = Unit serial number page
-
83h = Device identification page
-
88h = SCSI ports page
-
C8h = Vendor Specific Device Capabilities Page (Bridged HP LTO-6 Tape Drive)
-
- Allocation Length
-
The library transfers either the number of bytes specified by the Allocation Length field or all of the available inquiry data, whichever is less. The page lengths are:
-
0 = no inquiry data will be transferred. This is not considered an error.
-
24h = Standard Inquiry Data Length (IBM Bridged Tape Drive)
-
4Ah = Standard Inquiry Data Length (HP Bridged Tape Drive)
-
08h = Supported Pages Length
-
09h = Supported Pages Length (HP LTO-6 Bridged Tape Drive)
-
16h = Unit Serial Number Page Length
-
3Eh = Device Identification Page Length (IBM Bridged Tape Drive)
-
46h = Device Identification Page Length (HP Bridged Tape Drive)
-
34h = SCSI Ports Page Length
-
08h = Vendor Specific Device Capabilities Page Length (HP LTO-6 Bridged Tape Drive
-
Standard Inquiry Data Definition
Figure 2-4 Standard Inquiry Data Definition - HP Bridged
Description of "Figure 2-4 Standard Inquiry Data Definition - HP Bridged"
Figure 2-5 Standard Inquiry Data Definition - IBM Bridged
Description of "Figure 2-5 Standard Inquiry Data Definition - IBM Bridged"
- Peripheral Qualifier
-
000b = The specified peripheral device type is currently connected to this logical unit.
011b = The command was sent to an unsupported logical unit.
- Peripheral Device Type
-
08h = The library is a medium changer device.
1Fh = The command was sent to an unsupported logical unit.
- RMB (Removable Medium)
-
1 = The medium is removable.
- Version
-
05h = The library complies with SCSI-3.
- NACA (Normal Auto Contingent Allegiance - not supported)
-
0 = The library does not support setting NACA to one in the control byte of a CDB.
- HiSup (Hierarchical Addressing Support)
-
1 = The library uses the hierarchical addressing module to identify logical units.
- Response Data Format
-
2 = The data complies with the SCSI-3 specification.
- Additional Length
-
1Fh = The library has 31 additional bytes of Standard Inquiry Data available to the initiator.
45h = The library has 69 additional bytes of Standard Inquiry Data available to the initiator. This value is returned if the Allocation Length in the CDB is 36 bytes or larger.
- SCCS
-
0 = The library does not contain an embedded storage array controller component.
- ACC (Access Control Coordinator)
-
0 = The library does not contain an ACC that may be addressed through this logical unit.
- TPGS (Target Port Group Support)
-
01b = Implicit asymmetric logical unit access is supported. The SCSI target device is capable of changing target port asymmetric access states without a SET TARGET PORT GROUPS command. The REPORT TARGET PORT GROUPS command is supported and the SET TARGET PORT GROUPS command is not supported.
- 3PC (Third-Party Commands - not supported)
-
The library returns 0.
- Protect (Information Protection - not supported)
-
The library returns 0.
- VS (Vendor Specific)
-
0 = There is no vendor specific information with this command.
- MultiP
-
0 = There are no multiple target ports.
1 = The library has multiple target ports.
- MChngr
-
0 = The library is not embedded in or attached to a medium transport element.
- ADDR16
-
The library returns 0.
- WBUS16
-
The library returns 0.
- SYNC
-
The library returns 0.
- LINKED (Linked commands - not supported)
-
The library returns 0.
- CmdQue (Command Queuing)
-
0 = the library does not support command queuing
1 = the library supports command queuing
- SftRe (Soft Reset - not supported)
-
The library returns 0.
- Vendor Identification
-
Contains the ASCII character sequence “STK" followed by blanks. If the specified logical unit is not supported, this field contains all blanks.
- Product Identification
-
Contains the ASCII character sequence “SL150" followed by blanks.
- Product Revision Level
-
Contains an ASCII character sequence that represents the product revision level.
- Version Descriptors
-
The bridged drive returns up to eight Version Descriptors that are used to identify up to eight standards to which the drive conforms.
Supported Pages
- Peripheral Qualifier
- Peripheral Device Type
- Page Code
-
00h = The vital page
- Additional Page Length
-
4h = The library has 4 additional bytes of Supported Pages Inquiry data available to the initiator
5h = The bridged drive is an HP LTO-6 drive. The library has 5 additional bytes of Supported Pages Inquiry data available to the initiator
- Supported pages
-
80h = Unit serial number page
83h = Device identification page
88h = SCSI ports page
C8h = Vendor Specific Device Capabilities Page (Bridged HP LTO-6 Tape Drive)
Unit Serial Number Page
- Peripheral Qualifier
- Peripheral Device Type
- Page Code
-
80h = The unit serial number page.
- Additional Page Length
-
12h = 18 bytes of unit serial number data.
- Unit Serial Number
-
Contains a unique 18 character ASCII Serial Number for the library. For example:
-
464970G+1221XX0005
Where XX indicates the library partition identifier (such as P1 for partition 1). For nonpartitioned libraries, XX is 00.
-
Device Identification Page
Figure 2-6 Device Identification Page - HP Bridged
Description of "Figure 2-6 Device Identification Page - HP Bridged"
Figure 2-7 Device Identification Page - IBM Bridged
Description of "Figure 2-7 Device Identification Page - IBM Bridged"
- Peripheral Qualifier
- Peripheral Device Type
- Additional Page Length
-
42h = 66d additional bytes of Device ID Inquiry Data available to the initiator.
- Protocol Identifier
-
0h = FC protocol
6h = Serial Attached SCSI
- Code Set
-
1h = Binary values
2h = ACSII printable characters
- Identifier Type
-
1h = Contains T10 Vendor ID data
3h = Contains a 64-bit IEEE formatted address
4h = Contains the Relative Target Port Identifier
- Identifier Length
-
04h = 4-bytes long for Relative Port Identifier
08h = 8-bytes long for Node Name Identifier
2Ah = Length for T10 Vendor ID data
- PIV (Protocol Identifier Valid)
-
0 = The protocol identifier contents are reserved
1 = The protocol identifier is valid
- Association
-
0 = The identifier field is associated with the addressed logical unit
1 = The identifier field is associated with the port that received the request
- NAA IEEE Registered Identifier
-
An 8-byte identifier. The first 4 bits are the Name Address Authority — NAA (5h). The next 24 bits are the Oracle company ID (00 10 4Fh). The remaining bits are the vendor-specific identifier. The NAA IEEE Registered Identifier is unique for each library and Fibre Channel port.
- Relative Target Port
-
01h = Port 1
02h = Port 2
- Vendor Identification
-
Contains the ASCII character sequence “STK" followed by blanks. If the specified logical unit is not supported, this field contains all blanks.
- Product Identification
-
Contains the ASCII character sequence “SL150" followed by blanks.
- Unit Serial Number
-
Contains a unique 18 character ASCII Serial Number for the library. For example:
-
464970G+1221XX0005
Where XX indicates the library partition identifier (such as P1 for partition 1). For nonpartitioned libraries, XX is 00.
-
SCSI Ports Page
- Peripheral Qualifier
- Peripheral Device Type
- Additional Page Length
-
18h = 24d additional bytes of SCSI Ports Data available to the initiator.
30h = 48d additional bytes of SCSI Ports Data available to the initiator. This value is returned, if the drive has 2 SCSI ports and both SCSI ports are enabled
SCSI Port Identification Descriptor Data
- Relative Port Identifier
-
1 = Port 1
2 = Port 2
- Protocol Identifier
-
0 = Fibre Channel
6 = Serial Attached SCSI
- Code Set
-
1 = Binary values
- Association
-
1 = identifier field is associated with the port that received the request.
- PIV
-
1 = protocol identifier is valid
- Port Name Identification
-
Contains the 64-bit IEEE formatted address for the Port Name.
