SCSI Commands: 17BINQUIRY
Page
32
The Standard INQUIRY Data is based on the SCSI 3 standard for Standard
INQUIRY Data. This allows for setting certain bits in byte 6 to indicate features that
were non-standard in SCSI 2. The only supported SCSI 3 field is Multi Port (MultiP).
The Multi-Port (MultiP) bit is one if the device has multiple interface ports. Parallel
SCSI devices do not have multiple interface ports and have this bit clear. Fibre
Channel devices have dual interface ports and have this flag set.
The 16 Bit Address (Addr16) and Wide Bus 16 (WBus16) flags are set depending on
whether the hardware supports these bus features. These flags are only valid for
Parallel SCSI and are clear for all other interfaces.
3.5.3
Supported Vital Product Data (VPD) Page (00h)
The Supported Vital Product Data Page lists the following twelve VPD pages
including itself.
3.5.3.1.1
Supported Vital Product Data INQUIRY Page
Byte
Bits
7 6 5 4 3 2 1 0
0
Peripheral Qualifier
Peripheral Device Type
1
Page Code
2
Reserved
3
Page Length
4
Supported Vital Product Data Page Code (00h)
5
Unit Serial Number Page Code (80h)
6
Device Identification Page Code (83h)
7
Sequential Access Device Capabilities Page Code (B0h)
8
SCSI Firmware Revision Page Code (C0h)
9
Servo Firmware Revision Page Code (C1h)
10
Head Assembly Serial Number Page Code (C2h)
11
Reel Motor 1 Serial Number Page Code (C3h)
12
Reel Motor 2 Serial Number Page Code (C4h)
13
Board Serial Number Page Code (C5h)
14
Base Mechanical Serial Number Page Code (C6h)
3.5.3.2
Supported Vital Product Data Field Descriptions
Field Bytes
Bit
s
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
returned when an invalid LUN was in the last Identify
message, or the LUN field of the Identify CDB.
Page Code
1
Always 0, indicating the Supported Vital Product Data
INQUIRY Page
Reserved 2
Always
0
Page Length
3
Always 0Bh to indicate 11 listed pages.
Summary of Contents for LTO 4
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