1. Adaptec Aha-2940u2w
2. Drivers Adaptec AHA-2940U2W - Ultra2 Scsi
3. Drivers Adaptec Aha-2940u2w - Ultra 2 Scsi
4. Adaptec Aha-2940uw Driver

Adaptec AHA-2940U2B, 2940U2W, 2940U2/OEM, 2950U2B, 3950U2B HBAs

Download SCSIDrivers.exe for Windows to sCSIAdapter driver. Adaptec AHA-2940U2W - Ultra2 SCSI; Adaptec AHA-2950U2B - Ultra2 SCSI; Adaptec AHA-3950U2B - Ultra2 SCSI. Description: SCSI driver source code for Linux kernel versions 2.4 on all platforms. The source code is provided on an 'as is' basis for building and installing the drivers on unsupported versions of Linux. Download Adaptec AHA-2940U2W Driver v.6.3.11 & 2.0.26. AHA-2940U2W The SCSI Card 2940U2W (or AHA-2940U2W) is the latest in the line of Adaptec PCI host adapters. It has SCSI Ultra2 technology which uses Low Voltage Differential (LVD) circuitry designed into the CMOS to provide a bandwidth that is up to twice the current Ultra speeds and with cable lengths up to 25 meters. The software driver for the SCSI Card 2940U2W is listed as Adaptec AHA-2940U2W PCI Ultra2 SCSI Controller. If the driver is listed, the SCSI Card 2940U2W driver is loading properly. So, I suspect that there is an incompatibility between the Vista bit driver and my card. SCSI devices use Single-Ended SE, Low Voltage Differential LVD or Ultra2.

Preconfiguration Information

• Multi-initiator configurations are not supported.

• The Plug N Play SCAM Support option is not supported.

• Ensure that the Adaptec SCSISelect BIOS option Reset SCSI Bus at IC Initialization (under the Advanced Configuration Options menu) is set to Enabled. Run the SCSISelect utility by pressing Ctrl-A when you see the Adaptec banner during system boot.

• Reboot the system after you install patches.

• If you are both upgrading your Solaris Intel Platform Edition installation and adding a new device driver, you must first upgrade Solaris, then reboot your system, and then apply the Driver Update (DU), as follows.

  1. Perform the Solaris upgrade. Do not apply the cadp DU at this time.

  2. Reboot your system.

  3. When the system has rebooted successfully, insert the DU diskette into the diskette drive and apply the DU as follows.

     Mount the DOS formatted file system:

     Change directories:

     Install the DU:

     Perform a reconfiguration reboot.

Adaptec Aha-2940u2w

Known Problems and Limitations

• If you experience problems when using a narrow SCSI CD-ROM drive on the internal wide interface, disable 'negotiate wide,' 'negotiate sync,' or both for that device in the Adaptec configuration utility.

• If you experience problems when using the narrow internal connector, then disable 'de-selection' in the Adaptec configuration utility.

• The Fujitsu narrow disk (M1603SAU) has been observed reselecting with an invalid queue tag ID. This is a violation of the SCSI protocol and it causes the cadp driver to behave erroneously. Because this is difficult to guard against, it is best to disable tagged queuing for these targets.

  Use the iostat -E command to determine if you have a Fujitsu M1603S-512 disk. If you do, edit the /kernel/drv/cadp.conf file and add the property target n-scsi -options=0x1f78, where n is the target number.

• The IBM external wide disk (DFHSS2W, Revision 1717) is not supported.

Drivers Adaptec AHA-2940U2W - Ultra2 Scsi

Configuration Procedure

Drivers Adaptec Aha-2940u2w - Ultra 2 Scsi

Using the Adaptec configuration utility:

Adaptec Aha-2940uw Driver

• Configure each SCSI device to have a unique SCSI ID. On the Advanced Configuration Options menu, set Plug N Play SCAM Support to Disabled.

  Ensure that devices on either end of the SCSI chain are terminated. When mixing wide (16 bits) and narrow (8 bits) devices on the same wide chain, ensure that a wide device is at the end of the chain. If a narrow device is placed at the end of the chain, the wide devices on the same chain only have the low byte terminated, and this is an illegal configuration.

• If there is more than one controller (or an embedded controller), try to use one IRQ per controller.

• Enable bus mastering for the slot(s) with your host bus adapter(s), when asked.

• For older disk drives, tape drives, and most CD-ROM devices, make sure the maximum SCSI data transfer speed is set to 5.0 Mbps.

• Enable support for disks larger than 1 Gbyte if applicable.