Return to the Windows 2000 Setup screen.

6. Press Enter to proceed. The message about setup loading files appears.

7. Follow the Microsoft Windows 2000 installation procedure at this point.

Note: If both of these device drivers need to be installed, they can be installed one after the other using steps 3 through 5. Installation order is not important.

Current Windows 2000 drivers can be downloaded from the LSI Logic web site at http://www.lsilogic.com. After you are connected to this web site, place your cursor on the Get Drivers option in the menu bar. Click on the Drivers selection. Choose the Windows 2000 operating system for SCSI and click on the Go button. Follow the instructions on subsequent screens to download the drivers.

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Existing System Installation

This procedure installs or upgrades the SYMC8XX.SYS, SYM_HI.SYS, SYM_895A.SYS and/or SYM_U3.SYS drivers onto an existing Windows 2000 system.

When you add an LSI Logic adapter to an existing system installation, the new adapter will automatically be detected at the next reboot. For adapters controlled by the SYMC8XX.SYS or SYM_HI.SYS drivers, the bundled driver is loaded automatically with no user intervention. For adapters controlled by the SYM_895A.SYS or SYM_U3.SYS drivers, the Device Driver Wizard will appear at boot. Click on the Next button and continue at step 7 below.

1. Boot Windows 2000 and log on as Administrator.
   
   
2. Right click on My Computer and click on Properties.
   
   
3. Click on the Hardware tab, and then click on the Device Manager button.
   
   
4. Click the "+" to the left of the SCSI and RAID controllers line. Find the adapter desired for the driver upgrade and double click on the entry. Click on the Driver tab.

5. Information on the currently installed driver is displayed, and additional driver details can be viewed by clicking the Driver Details button.
   
   
6. Click on the Update Driver button to update the existing driver. The Upgrade Device Driver Wizard begins. Click on the Next button.
   
   
7. Make sure Search for a suitable driver for my device is selected, then click on the Next button.
   
   
8. Make sure the Floppy disk drives location is checked. Insert the appropriate device driver diskette that contains the Windows 2000 driver required to support your LSI Logic host adapter(s) and press Enter. The SDMS driver diskette was created earlier.

Current Windows 2000 drivers can be downloaded from the LSI Logic web site at http://www.lsilogic.com. After you are connected to this web site, place your cursor on the Get Drivers option in the menu bar. Click on the Drivers selection. Choose the Windows 2000 operating system for SCSI and click on the Go button. Follow the instructions on subsequent screens to download the drivers.

9. The system scans the existing driver database and the diskette drive for drivers for the selected adapter. If a driver already exists on the system, and it is newer than the updated driver on the SDMS driver diskette, a message is displayed giving you the option to keep or reinstall the existing driver.

In this case, if you desire to use the upgrade driver anyway, click on the Install one of the other drivers box, then click on the Next button. If no current driver exists, the driver on the SDMS driver diskette is displayed. Click on the Next button.

A list of suitable drivers appears. The entry for the upgrade driver can be verified by scrolling the display to the right, and viewing the Location field. 

10. Highlight the driver for the upgrade installation disk and click on the Next button.

In some cases, a message will state that this driver is not digitally signed. This message informs you that a non-signed driver is being installed. 

Note: Drivers are digitally signed by the Microsoft Windows Hardware Quality Lab (WHQL). Due to the delay between the general customer release by LSI Logic of Windows drivers and the completion of WHQL testing, some drivers that are distributed with adapters or downloaded from the LSI Logic web site at http://www.lsilogic.com may not be digitally signed.

11. Either click No to cancel the installation if the non-signed driver is not desired or click Yes to continue the installation.

The system loads the driver from the SDMS driver diskette. A message box may appear indicating that the target (existing) driver is newer than the source (upgrade) driver. 

12. Click No to cancel the driver upgrade at this point or click Yes to continue the installation.

The system copies the driver to the system disk. For any adapter other than the boot adapter, the updated driver will become active immediately. For the boot adapter, a message box displays indicating that the system needs to be rebooted for the new driver to take effect.

13. Click on the Finish button to complete the driver upgrade.

Note: When upgrading the driver on a multiple SCSI channel adapter, both channels of the adapter should be upgraded before the system is rebooted. Failure to do this can result in the upgraded driver being replaced by the original existing driver.

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Performance Tuning for Windows 2000

Windows 2000 has registry entries that can improve the performance of SCSI I/O for certain configurations. The tunable parameters are large transfer block size support and a guaranteed number of concurrent I/Os for a particular SCSI bus.

Important: Registry files for the SYMC8XX.SYS, SYM_HI.SYS, SYM_895A.SYS, and SYM_U3.SYS drivers begin with SYMXXXXX.REG.

• Large Block Size Support
• Maximum Number of Concurrent I/Os

Large Block Size Support

The SYMC8XX.SYS , SYM_HI.SYS, SYM_895A.SYS, and SYM_U3.SYS drivers can support up to a 1 Mbyte transfer size in Windows 2000, however the default transfer size is limited to 64 Kbytes. To enable a larger transfer size, an entry must be added to the registry, using the file SYM_256K.REG. This file will set a 256 Kbytes maximum, but it can be edited to set other desired maximum transfer sizes. 

Important: Be sure to read the information in the SYM_256K.REG data file before editing it.

Choose one of two methods to add this registry setting:

1. Locate the SYM_256K.REG (supplied with the driver files) using Windows Explorer and double click on the file.

or

2. Type at the command prompt:

REGEDIT SYM_256K.REG  

This inserts an entry in the registry to enable 256 Kbytes block size support.

Editing the SYM_256K.REG file can set any maximum block size between 64 Kbytes and 1 Mbyte (-8 Kbytes). The formula to calculate the proper value for MaximumSGList is:

MaximumSGList = (Maximum Block Size)/4K +1

For 256 Kbytes: 256K/4K = 64 Kbytes, add 1 for 65 (decimal) or 0x41(hexadecimal). The maximum value allowed for MaximumSGList is 255 or 0xFF. This denotes an absolute maximum transfer size of 1040384, which is 8 Kbytes less than 1 Mbyte (1040384/4K = 0xFE, add 1 for 0xFF or 255). 

The system must be rebooted for the new registry setting to be effective.

To reset the maximum block size to the default of 64 Kbytes, follow the instructions above, except use SYMDFBLK.REG as the data file.

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Maximum Number of Concurrent I/Os (Guaranteed)

Windows 2000 only guarantees a maximum of 32 concurrent I/Os active on a particular SCSI bus. However, due to the method of memory allocation, the actual limit of concurrent I/Os can vary greatly between various drivers or versions of drivers. This can have a huge impact on performance benchmarking between different driver versions or adapter vendors. In effect, one adapter may actually be able to have 70 or 80 I/Os outstanding, while another adapter could only have 32. This can also affect systems with high performance storage subsystems, such as disk arrays.

In order to have a guaranteed number of concurrent I/Os, an entry must be added to the registry, using the SYM100IO.REG file.

Important: Be sure to read the information in the SYM100IO.REG data file before editing it.

Choose one of two methods to add this registry setting:

1. Locate the SYM100IO.REG data file (supplied with the driver files) using Windows Explorer and double click on the file.

or

2. Type at the command prompt:

REGEDIT SYM100IO.REG  

This inserts an entry in the registry to guarantee a maximum of 100 concurrent I/Os per adapter.

If a maximum other than 100 is desired, the SYM100IO.REG file can be edited. However, setting this value to a high number uses increasing amounts of non-paged pool memory, a critical Windows 2000 resource. High values for this setting can degrade system performance. 

The system must be rebooted for the new registry setting to be effective.

To reset the guaranteed number of concurrent I/Os to the default of 32, follow the instructions above, except use SYMDEFIO.REG as the data file.

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Auto Request Sense

Enabling and Disabling Auto Request Sense is found in the Troubleshooting section under the problem The SCSI device does not install or operate correctly.

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Disk Mirroring

Note: This section applies only to Intel x86-platforms where the SDMS 4.XX PCI SCSI BIOS is used.

The SDMS 4.XX PCI SCSI BIOS loads only one image into system memory at boot time regardless of how many host adapters  are used in the system. All of the disk drives on all host adapters are recognized through the INT13h function call. Because of this implementation, disk mirroring under Windows 2000 needs to be done.  This must be done so that you can boot from the mirrored partition in case the primary partition fails.

To create a Windows 2000 Fault Tolerant (FT) diskette, follow these instructions:

1. Format a diskette in drive A: using Windows 2000 (Windows Explorer or My Computer) for use as an FT boot diskette.

2. From the root directory of the primary partition, copy NTLDR, NTDETECT.COM, and BOOT.INI to this diskette.

3. Temporarily remove the read-only attribute of the BOOT.INI file so that it can be modified and saved.

4. Edit BOOT.INI on the FT diskette and modify the following line where you want to boot the mirrored partition.

multi(0)disk(0)rdisk(x)partition(y)\<winnt_directory>

Where:

multi(0) and disk(0) should always remain same.

x = the drive number of the mirrored partition in the INT13h chain minus 80h.

The drive number of the mirrored partition can be found during system bootup of the SDMS 4.XX PCI SCSI BIOS when the primary partition does not exist. It should say either BOOT (=80h), 81h, 82h, and higher. Therefore the value of x would be 0 when BOOT, 1 when 81h, 2 when 82h, etc.

y = the partition number on the drive (starts at 1 which equals single partition on the drive).

For example, two LSI Logic host adapters are installed in the system. The first one, #0 which is the boot path, has two SCSI hard drives on ID 0 and ID 5. The second host adapter, #1, has two SCSI hard drives on ID 2 and ID 4. Assuming that the SCSI bus scan starts from ID 0 and goes up, the drive number of INT13h will look like this:

Host Adapter #0, ID 0= BOOT (which is 80h)
Host Adapter #0, ID 5= 81h
Host Adapter #1, ID 2= 82h
Host Adapter #1, ID 4= 83h

Now Windows 2000 is installed on the boot drive, host adapter #0 ID 0, and a mirrored partition is established on host adapter #1 ID 2. If the primary partition fails, for example due to power failure, then the drive number of INT13h will change:

Host Adapter #0, ID 5= BOOT   (which is 80h)
Host Adapter #1, ID 2= 81h
Host Adapter #1, ID 4= 82h

Therefore, the following line should be used in the BOOT.INI on the NT Fault Tolerant boot diskette to boot from the mirrored partition, host adapter #1 ID 2. Note that rdisk(1) was calculated from  x=81h - 80h.

multi(0)disk(0)rdisk(1)partition(1)\<winnt_directory>

5. Save the BOOT.INI file and restore the read-only attribute.

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Troubleshooting

Some potential problems and their suggested solutions are:

Problem: During installation, no SCSI devices are found.

Solution:

1. Ensure that Custom Setup is chosen on the Setup Method screen.

2. Ensure that all devices are powered on and terminated correctly.

3. Check that no devices have duplicate SCSI IDs.

4. Make sure INT A is assigned for the PCI slot(s) where your SCSI host adapter(s) is installed.

5. Ensure that all devices can be seen in the display banner of the SDMS SCSI BIOS at boot time.

6. For systems with some Award BIOS, ensure that the PCI IRQ is set to edge triggered.

Problem: System crashes during installation with a message indicating inaccessible boot device.

Solution:

1. This error is usually associated with an IRQ, DMA channel, I/O (chip) address, or BIOS address conflict. Set the SCSI host adapter to use a different interrupt.

2. A virus that infects the Master Boot Record of the boot device sometimes causes this error. Use a write-protected DOS bootable diskette containing virus scanning and cleaning software to check for any viruses on the boot device, and remove any viruses that are found.

Solution:

1. Older SCSI devices that incorrectly indicate to Windows 2000 that they support multiple LUNs usually cause this error. Contact the device manufacturer for a firmware upgrade.

2. Ensure that there are no devices with the same SCSI ID as the host adapter board.

Problem: The SCSI device does not install or operate correctly.

Solution:

1. If a SCSI device is not operating properly (either the device is not found or a SCSI interface error occurs during scanning), it is possible that the third-party device drivers do not support the auto request sense feature of LSI Logic host adapters. Disable the auto request sense feature as described below and try the device operation again.

2. Using the file SYMNO_AR.REG (for SYMC8XX.SYS, SYM_HI.SYS, SYM_895A.SYS or SYM_U3.SYS drivers), either double click on the file in Windows Explorer or type:
   
   REGEDIT SYMNO_AR.REG
   
   at the command prompt. This inserts a registry entry that disables the auto request sense feature. The system must be rebooted for this change to take effect.

3. To re-enable the auto request sense feature, use the file SYM_AUTO.REG and perform one of the update methods in step b above.

Problem: Problems with certain SCSI devices when using an Ultra SCSI adapter.

Solution:

Some SCSI devices do not function properly when the adapter attempts to negotiate Ultra SCSI transfer rates. If a device is not operating properly, check the transfer speed setting using the SDMS 4.XX PCI BIOS Configuration Utility (press Ctrl-C when the Symbios PCI BIOS banner appears during the system boot process). Devices that do not support Ultra SCSI should be set to a maximum of 10 Mbytes/s for narrow (8 bits), 20 Mbytes/s for wide (16 bits).

Problem: Problems with Ultra SCSI devices using Ultra SCSI protocol.

Solution:

1. If the system is configured with an LSI Logic host adapter that supports Ultra SCSI and an Ultra SCSI device is on the SCSI bus, intermittent problems and possible system crashes can occur if the SCSI bus cable and terminators do not conform to the Ultra SCSI specification.

2. Disable Ultra SCSI support for all devices via the SDMS 4.XX PCI BIOS Configuration Utility (press Ctrl-C when the Symbios PCI BIOS banner appears during the system boot process).

3. If the system operates properly without Ultra SCSI enabled, it is highly likely that the SCSI bus cable and terminators are not configured correctly for Ultra SCSI. See the LSI Logic host adapter user's guide for information on Ultra SCSI cabling requirements.

1. If the system is configured with an LSI Logic host adapter that supports Ultra160 SCSI and an Ultra160 SCSI device is on the SCSI bus, intermittent problems and possible system crashes can occur if the SCSI bus cable and terminators do not conform to the Ultra160 SCSI specification.

2. Disable Ultra160 SCSI support for all devices using the SDMS 4.XX PCI SCSI BIOS Configuration Utility (press Ctrl-C when the Symbios PCI SCSI BIOS banner appears during the system boot process).

3. 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.