Quantum 10K II - Manual (Page 163)

SCSI Description
5–96 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
MODE SELECT (6) Command (15h) (continued)
Table 5–43 Quantum-Unique Page — Field Descriptions (continued)
Field Default Description
ManCal 0 Manual Calibration. When set = 0, the disk drive runs
calibration and diagnostic procedures periodically.
When set = 1, calibrations occur only as a result of a REZERO
UNIT command.
Note that this bit is not saved by MODE SELECT when the value
of the SP field is 1.
DPER 1 Disable Post Error Recovery. When set = 1, disables Post Error
Recovery (refer to Read-Write Error Recovery Page, Section
5.17.3.3).
FAxRE 1 Force AxRE where x = W (WRITE) or R (READ)
When set = 0, the settings of AWRE/ARRE are as set in Mode
Page 01h (Read-Write Error Recovery Page).
When set = 1, Automatic WRITEs or READs are forced, even if
the related fields of Mode Page 01h are = 0.
QDER 0 Quick Disk Error Recovery. When set = 0, disk error recovery
has no 20msec limit.
When set = 1, disk error recovery time allotted is less than
20msec.
DFC 0 Disable Format Certification. If set = 1, format certification is
disabled regardless of the value of the DCRT bit in the FORMAT
Command’s parameter header.
Read Ahead Disable 0 If set = 1, disables READ ahead.
Enable Double Ack 0 If set = 1, disables the double acknowledge filter.
ESPDis 0 ESP Disabled. If this field = 1, ESP (anticipatory READ) is
disabled.
DFRCSU 0 Disable Filling of Revector Cache on Spin-Up. When this field =
1, revectoring cache is not refilled on spin-up.
AIP Gen Disable 0 Asynchronous Information Protection (AIP) Generation
Disabled. When set = 1, AIP generation is disabled.
AIP Check Enabled 0 AIP Checking Enabled. The drive does not support AIP
Checking.
AIP Capable 1 If = 1, indicates drive is capable of AIP.
LogPgB 0 When this field = 0, “total bytes read/written” field on Log
Page 02h and 03h reported as number of bytes. When = 1,
field is reported as number of blocks.
(continued)