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XH321L V5 Server Node V100R005 Maintenance and Service Guide 02

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The basic input/output system (BIOS) is the most basic software loaded to a computer hardware system. It provides an abstraction layer between the computer hardware and the OS. It is used to perform hardware initialization during the boot process and provide runtime services for the OS and programs. Figure 5-1 shows the BIOS position in the system.

The BIOS data is stored on the Serial Peripheral Interface (SPI) flash memory. The BIOS performs a power-on self-test (POST), initializes CPU and memory, checks the I/O and boot device, and finally boots the OS. The BIOS also provides the advanced configuration and power interface (ACPI) and hot swap setting.

The Huawei Purley-based server is developed based on the Insyde code base and uses a proprietary BIOS. It provides a variety of in-band and out-of-band configuration functions as well as high scalability, and support customization.

Figure 5-1 BIOS in the system

For details, see the Huawei Server Purley Platform BIOS Parameter Reference.

Updated: 2019-01-08

Document ID: EDOC1100033003

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