C-4
Using Advanced Configurable Parameters in Windows NT 4.0
Using Driver-specific Parameters
You can use the Registry Editor to enter driver-specific parameters
that affect the configuration information for Adaptec SCSI PCI
device drivers. See
Value Keys for Driver-specific Parameters
on
page C-4
for a list of valid values.
Value Keys for Driver-specific Parameters
Note:
The following parameters are case-sensitive and must be
entered exactly as shown. When entering multiple
parameters, each parameter must be separated by a space.
■
/INSTRUMENTATION
—Enables recording of I/O statistics
and errors. If this option is not specified, instrumentation
defaults to
Disabled
. The data type for this value is
REG_SZ
.
■
/INSTR_ERRLOG_Z=nnn
—
Sets the maximum number of
error log entries if /INSTRUMENTATION is enabled
.
If a
number is not specified, the maximum number of error log
entries defaults to
32
. Valid values are 0-128. The data type for
this value is
REG_SZ
.
■
/MAXTAGS=nnn
—
Specifies the tagged command queue
depth. If a number is not specified, the tagged queue depth
defaults to
128
. Valid values are 1-255. The data type for this
value is
REG_SZ
.
To enter driver-specific parameters
1
Click
Start
, then click
Run
.
2
Type
regedt32
, then press
Enter
.
3
Open the registry list to
\HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
aic78xx\Parameters\Device\DriverParameters.
If the
\Parameters\Device\DriverParameters
keys already exist, skip
to
Step 13
to begin entering parameters. If the keys do not exist,
create them by continuing with Step 4.
4
Click
aic78xx
.
5
From the Edit menu, select
Add Key
.
