Dell PowerEdge T350 Integrated Remote Access Controller 9 Attribute Registry - Page 132

BIOS.IntegratedDevices.IoNonPostedPrefetch (Read or Write) Description Controls the PCIe throughput by enabling or disabling the PCI IO non-posted prefetch mode. When set to Enabled, memory reads from PCI devices are optimized. However, performance may be reduced for writes from PCI devices. Legal Values ● Enabled ● Disabled Default Value Not Applicable Write Privilege Server Control License Required iDRAC Express or iDRAC Enterprise Dependency Not applicable BIOS.IntegratedDevices.MemoryMappedIOH (Read or Write) Description MMIO base default is 56TB. User should not change the default value unless addressing a known issue. When set to 12TB, the system will map MMIO base to 12TB. Enable this feature for an OS that requires 44bit PCIe addressing. When set to 512GB, the system will map MMIO base to 512GB, and reduce the maximum support for memory to less than 512GB. Enable this option only for the 4 GPU DGMA issue. Legal Values ● 512GB ● 12TB ● 56TB Default Value Not Applicable Write Privilege Server Control License Required iDRAC Express or iDRAC Enterprise Dependency Not applicable BIOS.IntegratedDevices.MmioAbove4Gb (Read or Write) Description Enables support for PCIe devices that require large amount of MMIO resources. Enable this option only for 64-bit operating systems. Legal Values ● Enabled ● Disabled Default Value Not Applicable Write Privilege Server Control License Required iDRAC Express or iDRAC Enterprise Dependency Not applicable BIOS.IntegratedDevices.MmioLimit (Read or Write) Description Legal Values Default Value Write Privilege When set to 1TB, the system will restrict maximum MMIO space to 1TB. Enable this feature for devices not support above 1TB addressing. ● 8TB ● 1TB Not Applicable Server Control 132 BIOS Attributes