Avago Technologies LSI20160 - Manual (Page 122)

5-18 Windows 2000 Device Driver Installation
Copyright © 1993–2001 by LSI Logic Corporation. All rights reserved.
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If the system operates properly without Ultra160 SCSI enabled, it is
highly likely that the SCSI bus cable and terminators are not
configured correctly for Ultra160 SCSI. See the LSI Logic host
adapter user's guide for information on Ultra160 SCSI cabling
requirements.
At Ultra160 speed (160 Mbytes/s) system hangs, has long boot time,
or SCSI device not available.
Some older SCSI devices do not tolerate Domain Validation operations.
At system boot time, Domain Validation is performed to test the data
integrity of the SCSI bus between the host adapter and each target
device. With some older SCSI devices, these operations can cause the
device to stop responding to SCSI commands.
Disable Domain Validation, either for a specific SCSI target or all
adapters controlled by the driver, by following these steps:
Step 1. To disable Domain Validation for a specific SCSI target, use the
SDMS 4.XX PCI SCSI BIOS Configuration Utility to set the
Sync Rate to 0 (async) and the Data Width to 8.
This target will run in async/narrow mode and no Domain
Validation operations will be performed on it.
Step 2. To disable Domain Validation for all host adapters controlled by
this driver, use the
SYMNO_DV.REG file (supplied with the SDMS
driver files). Either double click on the file in Windows Explorer
or My Computer or type
REGEDIT SYMNO_DV.REG at the
command prompt.
This inserts a registry entry that disables Domain Validation
operations. You must reboot your system for this change to take
effect.
Step 3. To re-enable the Domain Validation feature, use the file
SYM_DOMV.REG and perform one of the update methods
described in the preceding paragraph.
5.6 Using SDMS ASPI for Windows 2000
SDMS ASPI for Windows 2000 is a software support package based on
the “ASPI for Win32” version 2.3 specification. Refer to this specification