User Manual

SCSI Commands Reference Manual, Rev. J 313
www.seagate.com Parameters for direct access devices
The background Scan Status parameter (see table 279) contains status information about the background pre-scan and
background medium scan features.
PARAMETER CODE field
For general usage application client data, the value in the PARAMETER CODE field shall be between 0000h and 0FFFh. The first supported gen-
eral usage application client parameter code shall be 0000h and additional supported parameters shall be sequentially numbered. If any gen-
eral usage parameter codes are implemented, the device shall support at least 64 general usage parameter descriptors and they shall be
parameter codes 0000h through 003Fh.
PARAMETER LENGTH field
The PARAMETER LENGTH field indicates that number of bytes remaining in the log parameter.
ACCUMULATED POWER ON MINUTES field
The ACCUMULATED POWER ON MINUTES field indicates the number of minutes the device server has been powered on since
manufacturing.
Table 279 Background Scan Status parameter format
Bit
Byte
7 6 5 4 3 2 1 0
0
(MSB)
PARAMETER CODE (0000h)
1
(LSB)
2
Parameter control byte – binary format list log parameter (see 5.2.2.2.2.5)
3
PARAMETER LENGTH (0Ch)
4
(MSB)
ACCUMULATED POWER ON MINUTES
. . .
7
(LSB)
8
Reserved
9
BACKGROUND SCAN STATUS
10
(MSB)
NUMBER OF BACKGROUND SCANS PERFORMED
11
(LSB)
12
(MSB)
BACKGROUND MEDIUM SCAN PROGRESS
13
(LSB)
14
NUMBER OF BACKGROUND MEDIUM SCANS PERFORMED
15