Avago Technologies LSI20160 - Manual (Page 65)

Using the Command Line Options 3-19
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This shows the Sync Rate and Width for each device and the
selected adapter.
Step 4. Set the Sync Rate to 0 and Width to 0 for the selected device.
This sets the device to asynchronous/narrow transfers and
Domain Validation functions are not issued to this device.
Step 5. Exit the SCSI BIOS Configuration Utility and save changes.
3.5.5 Multiple LSI Logic Host Adapters Considerations
If multiple LSI Logic PCI SCSI host adapters are installed in the system,
special actions are sometimes required to install or change drivers. This
is due to the fact that the bundled driver supports some LSI Logic host
adapters, and also that one SDMS device driver can support multiple
LSI Logic host adapters installed in the system.
With multiple LSI Logic adapters, it is possible to have a situation where
one adapter is assigned to one driver, and another is assigned to a
different version of the same driver. This can cause conflicts that may
cause the system to switch to real-mode drivers, affecting performance
and access to CD-ROM or tape drives.
When installing additional boards or updating drivers, only one version of
the appropriate driver controls all the LSI Logic host adapters. To update
your system to the correct driver, two methods are available.
3.5.5.1 Method 1
Follow these steps:
Step 1. Change the driver for a particular host adapter to the desired
driver by using the Device Manager.
Step 2. Click No when prompted to reboot the system for the new
settings to take effect.
Step 3. Change drivers for all LSI Logic host adapters in the system
supported by that same driver to the new driver, and reply No
to rebooting until the final adapter is changed.
If booting from a SCSI device, ensure that the adapter
controlling this device is the last one changed.