User Manual

SCSI Commands Reference Manual, Rev. J 470
www.seagate.com Parameters for direct access devices
5.4.3 Block Device Characteristics VPD page (B1h)
The Block Device Characteristics VPD page (see table 439) contains parameters indicating characteristics of the logical unit.
PERIPHERAL QUALIFIER and PERIPHERAL DEVICE TYPE fields
The PERIPHERAL QUALIFIER field and the PERIPHERAL DEVICE TYPE field are defined in SPC-5.
PAGE CODE and PAGE LENGTH fields
The PAGE CODE field and PAGE LENGTH field are defined in SPC-5 and shall be set to the values shown in Table 439.
MEDIUM ROTATION RATE field
The MEDIUM ROTATION RATE field is defined in Table 440.
PRODUCT TYPE field
The PRODUCT TYPE field (see table 441) defines the product type of the storage device.
Table 439 Block Device Characteristics VPD page
Bit
Byte
7 6 5 4 3 2 1 0
0 PERIPHERAL QUALIFIER PERIPHERAL DEVICE TYPE
1 PAGE CODE (B1h)
2 (MSB)
PAGE LENGTH (003Ch)
3 (LSB)
4 (MSB)
MEDIUM ROTATION RATE
5 (LSB)
6 PRODUCT TYPE
7 WABEREQ WACEREQ NOMINAL FORM FACTOR
8 Reserved ZONED Reserved BOCS FUAB VBULS
9
Reserved. . .
63
Table 440 Medium Rotation Rate field
Code Definition
0000h
Medium rotation rate is not reported
0001h
Non-rotating medium (e.g., solid state)
0002h to 0400h
Reserved
0401h to FFFEh
Nominal medium rotation rate in revolutions per minute
(e.g., 7 200 rpm = 1C20h,10 000 rpm = 2710h, and 15 000 rpm = 3A98h)
FFFFh
Reserved