Server Management

Intel® Server Board SE7501WV2 TPS

Near the end of POST, before the option ROMs are initialized, the BIOS disables the FRB-2 timer in the BMC. If the system contains more than 1 GB of memory and the user chooses to test every DWORD of memory, the watchdog timer is disabled before the extended memory test starts, because the memory test can take more than 6 minutes under this configuration. If the system hangs during POST, the BIOS does not disable the timer in the BMC, which generates an asynchronous system reset (ASR).

5.1.1.3FRB-3

The first timer (FRB-3) starts counting down whenever the system comes out of hard reset, which is usually about 5 seconds. If the BSP successfully resets and starts executing, the BIOS disables the FRB-3 timer in the BMC by de-asserting the FRB3_TIMER_HLT* signal (GPIO) and the system continues with the POST. If the timer expires because of the BSP’s failure to fetch or execute BIOS code, the BMC resets the system and disables the failed processor. The system continues to change the bootstrap processor until the BIOS POST gets past disabling the FRB-3 timer in the BMC. The BMC sounds beep codes on the speaker, if it fails to find a good processor. The process of cycling through all the processors is repeated upon system reset or power cycle.

5.2System Reset Control

Reset circuitry on the SE7501WV2 server board looks at resets from the front panel, ICH3-S, ITP, and the processor subsystem to determine proper reset sequencing for all types of resets. The reset logic is designed to accommodate several methods to reset the system, which can be divided into the following categories:

•Power-up reset

•Hard reset

•Soft (programmed) reset

The following subsections describe each type of reset.

5.2.1Power-up Reset

When the system is disconnected from AC power, all logic on the server board is powered off. When a valid input (AC) voltage level is provided to the power supply, 5-volt standby power will be applied to the server board. The baseboard has a 5-volt to 3.3-volt regulator to produce

3.3-volt standby voltage. A power monitor circuit on 3.3-volt standby will assert BMCRST_L, causing the BMC to reset. The BMC is powered by 3.3-volt standby and monitors and controls key events in the system related to reset and power control.

After the system is turned on, the power supply will assert the RST_PWRGD_PS signal after all voltage levels in the system have reached valid levels. The BMC receives RST_PWRGD_PS and after 500 ms asserts RST_P6_PWR_GOOD, which indicates to the processors and ICH3-S that the power is stable. Upon RST_P6_PWR_GOOD assertion, the ICH3-S will toggle PCI reset.

5.2.2Hard Reset

A hard reset can be initiated by resetting the system through the front panel switch. During the reset, the Sahalee BMC de-asserts RST_P6_PWR_GOOD. After 500 ms, it is reasserted, and the power-up reset sequence is completed.

The Sahalee BMC is not reset by a hard reset; it is only reset when AC power is applied to the system.

62

Revision 1.0

 

Intel reference number C25653-001

Page 61 Page 63
Page 62
Image 62
Intel SE7501WV2 manual System Reset Control, Power-up Reset, Hard Reset, FRB-3
Page 61 Page 63

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.
Top Page Image Contents