Adaptec 2930U User Guide - Page 64

Value Keys for SCSI Parameters

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Using Advanced Configurable Parameters in Windows NT 4.0 Note: The following value keys are case-sensitive and must be entered exactly as shown. Value Keys for SCSI Parameters I DisableTaggedQueuing-A nonzero value indicates that the SCSI card disables tagged queueing for SCSI devices. The data type for this value is REG_SZ. I DisableSynchronousTransfers-A nonzero value indicates that the SCSI card is not to initiate synchronous negotiations (but it may still accept negotiations initiated by a SCSI target). The data type for this value is REG_SZ. I DisableDisconnects-A nonzero value indicates that targets are not permitted to disconnect during the execution of a SCSI command. The data type for this value is REG_DWORD. I MaximumLogicalUnit-This can limit the scan for connected devices on the SCSI bus. Valid values are 1 to 8. If 1 is specified, the Windows NT SCSI Manager assumes that no SCSI targets support LUNs other than 0. Otherwise, LUNs from 0 to 8 are scanned during system initialization. The data type for this value is REG_DWORD. I Maximum SGList- Specifies the maximum number of Scatter/Gather elements. Valid values are 17 to 255. The data type for this value is REG_DWORD. To enter Windows NT 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. If the \Parameters\Device keys already exist, skip to Step 9 to begin entering values. If the keys do not exist, create them by continuing with Step 4. 4 Click aic78xx. C-2

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C-2
Using Advanced Configurable Parameters in Windows NT 4.0
Note:
The following value keys are case-sensitive and must be
entered exactly as shown.
Value Keys for SCSI Parameters
■
DisableTaggedQueuing
—A nonzero value indicates that the
SCSI card disables tagged queueing for SCSI devices. The data
type for this value is
REG_SZ
.
■
DisableSynchronousTransfers
—A nonzero value indicates
that the SCSI card is not to initiate synchronous negotiations
(but it may still accept negotiations initiated by a SCSI target).
The data type for this value is
REG_SZ
.
■
DisableDisconnects
—A nonzero value indicates that targets
are not permitted to disconnect during the execution of a SCSI
command. The data type for this value is
REG_DWORD.
■
MaximumLogicalUnit
—This can limit the scan for connected
devices on the SCSI bus. Valid values are 1 to 8. If 1 is specified,
the Windows NT SCSI Manager assumes that no SCSI targets
support LUNs other than 0. Otherwise, LUNs from 0 to 8 are
scanned during system initialization. The data type for this
value is
REG_DWORD
.
■
Maximum SGList
— Specifies the maximum number of
Scatter/Gather elements. Valid values are 17 to 255. The data
type for this value is
REG_DWORD
.
To enter Windows NT 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.
If the
\
Parameters\Device
keys already exist, skip to
Step 9
to
begin entering values. If the keys do not exist, create them by
continuing with Step 4.
4
Click
aic78xx
.