Background Control Mode Parameter (Page Code = 1C/Subpage = 01) - Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications

4.1.11

Background control mode parameter (page code = 1C/subpage = 01)

Note:
This parameter is not supported. When this parameter is set during MODE SELECT, this command
is terminated with error. (ILLEGAL REQUEST [=5] / Invalid Field in Parameter List [=26/00] ) In
MODE SENSE, this parameter is not transferred.
Bit
Byte
0
1
2-3
4
Default
Variable
5
Default
Variable
6-7
Default
Variable
8-9
Default
Variable
10-15
a. EN_BMS (Enable Background Media Scan)
"1": a background medium scan operations are enabled.
"0": a background medium scan is disabled.
Background medium scanning means the operation is performed without using any bandwidth on the
SCSI interface.
b. EN_PS (Enable Pre-Scan)
"1": a background medium scan operation shall not start until after the pre-scan operation is halted
or completed.
The BMS interval time shall occur before a background medium scan operation is started.
"0": Pre-Scan is disabled.
The background pre-scan feature is enabled by setting the EN_PS bit in the Background Control
mode page, then setting the EN_PS bit and power cycling the device. After power is restored the pre-
scan timer is set and the device begins scanning the medium starting at LBA zero and ending with the
last LBA.
C141-C010
7 6 5
1 1 0
Subpage Code = 01
Subpage Length
Reserved
0 0 0
0 0 0
Reserved
0 0 0
0 0 0
BMS Interval Time
PRE-SCAN Timeout Value
X '0000'
X ''FFFF'
X '00' (Reserved)
4 3 2
1 1 1
0 0 0
0 0 0
0 0 0
0 0 0
X '00AB'
X 'FFFF'
4.1 Mode Parameters
1 0
0 0
EN_BMS
0 0
0 1
EN_PS
0 0
0 1
4-47