Bios Optimization; Enable Direct Cache Access (Dca) - Lenovo ThinkAgile HX Series Hardware Replacement Manual

Alternatively, use UEFI setup page to select Legacy Boot mode:
Boot Manager > Boot Modes > System Boot Mode > [Legacy Mode]
Alternatively, use the XCC console to select Legacy Boot mode:
Figure 12. XCC Console selection of Legacy Boot mode

Bios Optimization

Lenovo recommends the following BIOS optimization settings for Lenovo ThinkAgile HX Series appliances.

Enable Direct Cache Access (DCA)

Enable DCA mode for the processors to allow the network adapters to place data directly into the CPU cache,
which reduces cache misses and can improve performance.
Use the ASU system tool, or other means, to enable the DCA processor option:
>asu64 set Processors.DCA Enable
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Lenovo Converged HX Series Hardware Replacement Guide