Intel® Server Board SE7501WV2 TPS

BIOS

6.12.2Advanced Configuration and Power Interface (ACPI)

The primary role of the ACPI BIOS is to supply the ACPI Tables. POST creates the ACPI Tables and locates them above 1 MB in extended memory. The location of these tables is conveyed to the ACPI-aware operating system through a series of tables located throughout memory. The format and location of these tables is documented in the publicly available ACPI specification. To prevent conflicts with a non-ACPI-aware operating system, the memory used for the ACPI Tables is marked as “reserved” in the INT 15h, function E820h.

As described in the ACPI specification, an ACPI-aware operating system generates an SMI to request that the system be switched into ACPI mode. The BIOS responds by setting up all system (chipset) specific configuration required to support ACPI, issues the appropriate command to the BMC to enable ACPI mode and sets the SCI_EN bit as defined by the ACPI specification. The system automatically returns to legacy mode on hard reset or power-on reset.

There are three runtime components to ACPI:

ACPI Tables: These tables describe the interfaces to the hardware. ACPI Tables can make use of a p-code type of language, the interpretation of which is performed by the operating system. The operating system contains and uses an AML (ACPI Machine Language) interpreter that executes procedures encoded in AML and stored in the ACPI Tables; ACPI Machine Language is a compact, tokenized, abstract machine language. The tables contain information about power management capabilities of the system, APICs, and the bus structure. The tables also describe control methods that the operating system uses to change PCI interrupt routing, control legacy devices in Super I/O, and find the cause of wake events.

ACPI Registers: ACPI registers are the constrained part of the hardware interface, described (at least in location) by the ACPI Tables.

ACPI BIOS: This code boots the machine and implements interfaces for sleep, wake, and some restart operations. The ACPI BIOS also provides the ACPI Description Tables.

All IA-32 server platforms support S0, S4, and S5 states. The SE7501WV2 server board also supports the S1 state. S1 and S4 are considered sleep states. The ACPI specification defines the sleep states and requires the system to support at least one of them.

While entering the S4 state, the operating system saves the context to the disk and most of the system is powered off. The system can wake from such a state on various inputs depending on the hardware. The SE7501WV2 platform will wake on a power button press, or a signal received from a wake-on-LAN compliant LAN card (or on-board LAN), modem ring, PCI power management interrupt, or RTC alarm. The BIOS performs a complete POST upon a wake from S4 and initializes the platform. S4BIOS is not supported.

The SE7501WV2 server board can wake from the S1 state using a PS/2 keyboard, mouse, and USB device in addition to the sources described above.

The wake sources are enabled by the ACPI operating systems with co-operation from the drivers; the BIOS has no direct control over the wake sources when an ACPI operating system is loaded. The role of the BIOS is limited to describing the wake sources to the operating system and controlling secondary control/status bits via a Differentiated System Description Table (DSDT).

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Intel reference number C25653-001

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Intel SE7501WV2 manual Advanced Configuration and Power Interface Acpi

SE7501WV2 specifications

The Intel SE7501WV2 is a versatile server motherboard designed to meet the demanding needs of modern computing environments. Engineered with a focus on performance, reliability, and flexibility, this motherboard is tailored for a range of applications, from entry-level servers to high-performance computing tasks.

One of the main features of the SE7501WV2 is its support for Intel's Xeon processors, specifically those based on the Netburst architecture. This compatibility allows for powerful multi-threaded processing capabilities, making it ideal for businesses seeking to optimize their server performance. The motherboard supports dual CPU configurations, enabling up to two processors to work simultaneously, thereby increasing computational power and efficiency.

The motherboard incorporates Intel's advanced server management technologies such as Intel Active Monitoring Technology, which helps in monitoring system health and optimizing power usage. Additionally, it features Intel's I/O Acceleration Technology, which enhances data throughput and reduces latencies, ensuring that applications run smoothly and efficiently.

Another significant characteristic of the SE7501WV2 is the memory capacity it offers. With support for up to 16 GB of ECC (Error-Correcting Code) DDR SDRAM, the motherboard helps in maintaining system stability during high workloads. The ECC memory not only prevents data corruption but also significantly enhances the reliability of mission-critical applications.

For connectivity, the SE7501WV2 comes equipped with multiple PCI-X slots, enabling the addition of various expansion cards for network, storage, and graphic capabilities. This expandability is crucial for enterprises that need to adapt their server architecture to evolving workloads.

Moreover, the SE7501WV2 features integrated high-performance RAID support, improving data redundancy and performance. This feature is essential for organizations that prioritize data security and require robust backup solutions.

In terms of power management, the motherboard supports advanced power features that help reduce operational costs while maximizing performance. The design ensures efficient power consumption, allowing it to run cooler and quieter, which is particularly beneficial for noisy data center environments.

In conclusion, the Intel SE7501WV2 motherboard is designed for those who require robust performance, reliability, and flexibility in server applications. With its support for dual Xeon processors, extensive memory capabilities, advanced management technologies, and expandability, it stands out as a solid solution for many enterprise-level computing needs.