C Using Advanced Configuration Parameters; Using Windows Scsi Parameters - Adaptec 29320LPE Installation And User Manual

The following is a table of supported Windows Registry Settings.
Option Name
/MAXTAGS=nnn
/INSTR_ERRLOG_Z=nnn
MaximumSGList
MaximumLogicalUnit
NumberOfRequests

Using Windows SCSI Parameters

Follow the instructions below to enter the registry values that affect how the Windows SCSI
manager interprets the generic configuration information of SCSI device drivers. Each driver
has its own key reference in the Registry. In these instructions, the Ultra320 key is used
(adpu320). All SCSI cards supported by the modified key are affected by the values you enter
here. A list of valid values follows:
Note:
The following value keys are case-sensitive and must be entered exactly as shown.
MaximumLogicalUnit—This can limit the scan for connected devices on the SCSI bus.
●
Valid values are 0 to 32. If 1 is specified, the Windows SCSI manager assumes that no SCSI
targets support LUNs other than LUN 0. Otherwise, LUNs from 0 to 31 are scanned during
system initialization. The data type for this value is REG_DWORD.
MaximumSGList—Specifies the maximum number of Scatter/Gather elements. Valid
●
values are 2-255. The data type for this value is REG_DWORD.
NumberOfRequests—specifies the maximum number of commands that can be delivered
●
to an SCSI card. Valid values are 16-255. The data type for this value is REG_DWORD.
To enter Windows parameters:
1
Select Run from the Start button.
2
Type
regedt32,
3
Open the registry list to the following location:
\HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\adpu320
\Parameters\Device
If the Parameters\Device keys already exist, skip to
the keys do not yet exist, you need to create them by continuing with
4
Click the adpu320 key.
5
Select the Add Key from the Edit menu; type
the Class edit box blank.
6
Click the Parameters key.
Appendix C: Using Advanced Configuration Parameters
Default Valid
Value Value
32 1-255
32 0-127
65 2-255
32 0-31
255 16-255
then press Enter.
Definition
Specifies tagged command queue depth per
target.
Specifies the length of the instrumentation error
log.
Sets the maximum transfer size for an
individual command.
Limits the scan for connected devices on the
SCSI bus.
Specifies the maximum number of commands
that can be delivered to an SCSI card.
Step 8 below to begin entering values. If
Step
in the Key Name edit box. Leave
Parameters
49
●
4.