Users may experience lower network performance when Hyper-V role is added in Microsoft Windows Server 2008 R2* with more than 32G of physical memory and when using dual Intel® Xeon® 5600 series processor configuration.

Users are advised to perform the following steps:

1. Update to BIOS 55 or later

   Product Download Link S5520UR S5520HC S5520SC S5500HCV

2. Update the network driver to the latest revision

3. Configure the Maximize/Minimum Memory below 4GB setting under BIOS, by accessing the BIOS console (pressing <F2> during POST), & then going to:
   Advanced > PCI Configuration > Maximize/Minimum Memory below 4GB > MIN.

   

If Hyper-V is not in use, see Slow network performance under Windows Server 2008*

This applies to:

Intel® Server Board S5500HCV Intel® Server Board S5500WB Intel® Server Board S5520HCT Intel® Server Board S5520UR Intel® Server System SC5650HCBRP Intel® Server System SR1600UR Intel® Server System SR1625UR Intel® Server System SR2600UR Intel® Server System SR2625UR Intel® Workstation Board S5520SC Intel® Workstation System SC5650SCWS