Enabling Intel(R) I/O Acceleration Technology (Intel(R) I/OAT) on a Network Device
=================================================================

December 12, 2007


System Requirements
===================

Platform
  - The platform must be based on a server chipset and 
      BIOS that are Intel I/OAT capable.

Operating System
  - Microsoft Windows Server* 2003, with Service Pack 1 
    and the Scalable Networking Pack, or with Service 
    Pack 2 (SP2 contains the Scalable Networking Pack). 
  - Microsoft Windows Server* 2008 
  - Linux: SuSE SLES 10 

Network Connectivity Hardware
    Intel I/OAT is supported on specific server adapters 
    and network connections available from Intel and 
    other vendors. If you have multiple network 
    adapters in your system, Intel I/OAT will operate 
    automatically on the compatible models, while 
    non-compatible adapters will pass traffic normally. 


Notes
=====
  - At least one Intel I/OAT-capable port must be enabled 
    when your system starts up. If no Intel I/OAT-capable 
    ports are enabled at system startup, the IOATDMA 
    driver will not register with NDIS and Intel 
    I/OAT-capable ports enabled after system startup will 
    show no DMA activity. Enable an Intel I/OAT-capable 
    port and reboot to resolve this issue.
  - The Intel(R) 5400 Chipset QuickData Technology Device 
    supports only Direct Cache Access (DCA) on Windows 
    Server 2003. DMA offloading is not supported. 

Tuning Your System
==================

Memory
    Your system memory channels should be fully populated. 
    Intel recommends a minimum of 4 GB of system memory or 
    1 GB per channel. Refer to your system guide for 
    specific information regarding memory channels.

Windows Adapter Settings
    In a Windows environment, the following advanced 
    settings must be enabled:
      - RSS
      - Offload Receive IP Checksum 
      - Offload Receive TCP Checksum 


Legal / Disclaimers
===================

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