Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
110
18.5.1.10
Inquiry Data - EVPD = 1, Page Code - 90h
Table 81 Inquiry Data - EVPD = 1 (Page Code = 90h)
Byte
Bit
7
6
5
4
3
2
1
0
0
Qualifier = 0
Peripheral Device Type = 0
1
Page Code = 90h
2-3
Page Length = 24 (0018h)
4-15
Protocol-specific logical unit information descriptor 0.
16-27
Protocol-specific logical unit information descriptor 1.
- Qualifier field is set to zero to indicate that the LUN specified in the Command Block is currently supported.
- Peripheral Device Type is set to zero to indicate that the device is Direct Access.
- Page Code is set to the value of the page code field in the CDB.
- Page Length is set to 24, and this field specifies the length of the following page data.
- Protocol-specific logical unit information descriptor 0 field is defined in Table 82
- Protocol-specific logical unit information descriptor 1 field is defined in Table 82
Table 82 Protocol-specific logical unit information descriptor
Byte
Bit
7
6
5
4
3
2
1
0
0-1
Relative Port Identifier
2
Reserved
Protocol Identifier = 6h
3-5
Reserved
6-7
Descriptor Length (0004h)
8
Reserved
TLR CONTROL
SUPPORTED = 0h
9-11
Reserved
- Relative Port Identifier is set to 1 for Port A (Primary Port) or 2 for Port B (Secondary Port).
- Protocol Identifier is set to 6 to specify that this is a SAS SSP Descriptor.
- TLR Control Supported field specifies support of the TLR CONTROL field in the SAS SSP frame header. This
field is set to zero to indicate that the drive does not support Transport Layer Retries
18.5.1.11
Inquiry Data - EVPD = 1, Page Code - 91h
Table 83 Protocol Specific Port Information VPD page to SAS SSP
Byte
Bit
7
6
5
4
3
2
1
0
0
Qualifier = 0
Peripheral Device Type = 0