Currently, the server can be divided into the IA architecture server of the RISC (Reprimanting Instruction Set Calculation) architecture server and CISC (complex instruction set calculation) in accordance with its architecture. The IA architecture server uses an open system and implements industrial standardization technology. Since 1996 Intel launched the Pentium Pro processor, the IA architecture servers have greatly developed. Now, the server with Pentium III Xeon can support 8 channels and have high performance. Company IBM, Dell, SGI, HP, Compaq, etc., high-end server areas have turned to use IA architectures. Since the server of the IA architecture uses an open architecture, it is favored by domestic server manufacturers, and the manufacturer of major IA architecture servers in China has a wave, Lenovo, Joint Zhi, Tongfang. The origin of the Pseudo IA Architecture Server has followed the domestic server market: In 2000, domestic brands have created amazing growth results, and the market share has accounted for 41%. However, entering 2001, the global economic development speed slowdown, foreign server manufacturers increased the investment in the Chinese market, and domestic large IT companies have also added, making the new dawn domestic server manufacturers face severe challenges. In front of cruel competition, local brands have to take price war. In low-priced competition, it can be profitable and not false, which is closely related to the technical strength and production scale of the company. Taking Beijing Lianzhi as an example, the reason why it is possible to launch a low-cost server product, the most important thing is based on its own strength. At present, the only domestic manufacturer of production server products is actually only several Jedi, and those server manufacturers that have no weakness or weak server do not have the corresponding technical strength and industrial production scale. In order to get a place in low-cost competition, they have to play The word game of "stealing the column", with high-end PC, other non-IA standard chips to replace Intel's IA architecture chipset, pretending to install the IA architecture, and then push the market with a so-called "promotional price". The fake IA architecture server in the market has attracted Intel and some domestic manufacturers alert, Intel decided to jointly organize large-scale promotion activities with server manufacturers around the world, and cooperate with Beijing Lianzhi, order in mid-November Activities in 13 cities across the country. What is the true IA architecture server usually refers to the Intel processor's server as an IA (Intel Architecture) architecture server. Since the architecture server adopts an open system, industrial standardization technology and support from a large number of hardware and software suppliers at home and abroad, based on high-volume production ratio, in a global scale, Especially in our extensive application. The real server must meet the following conditions: 1. Intel CPU; 2. Using Intel's server motherboard; 3. Adopt Intel's RAID technology; 4. Using Intel certified hardware and software; 5. Free service management feature ism. Intel is the formulator of IA architecture standard, which has more than 80% of the CPU market, and the IA architecture has become a criteria for users. Intel (China) Co., Ltd. Technical Consulting Manager Luo Bin said: "From the current network development situation, the IA architecture characterized by" small, smart, stable "is more than reliable performance, low price, and has been more A wide range of applications. Many people call a server as NT server or PC server, in fact, I should change the name, called the IA architecture server or standardization, mass server, because this server is not only running on NT. There is not much relationship with the PC.
The real IA architecture is a strict industrial standard, the server is a cornerstone of the entire network, playing a pivotable role, if the PC or other pseudo IA standard motherboard or chip is used as a key component of the IA architecture server, will inevitably affect The Quality of the IA architecture will ultimately damage the interests of users. "Really, the difference between the server of the pseudo IA architecture 1. The number of internal PCI total lines of the IA Architecture server corresponds to the number of CPUs, and several CPUs have several bus, and their bandwidth can be increased, The system's concurrent throughput is large, complies with the needs of the server multitasking. The internal bus structure of the real Ia architecture server ensures high efficiency of multi-CPU parallel, maximizing the advantages of multi-processor systems. The pseudo IA architecture server has only one internal Bus, CPU parallel processing efficiency, system internal bus crowding; when the system load is heavy, the South Bridge chip is easily blocked, causing downtime. 2. Memory real IA architecture server uses fault tolerance memory ECC (Error Checking and Correcting). There is a strong error detection and correction function, which uses 4 bit bits to detect 8 bit data methods, so that more errors are detected, and 1 bit error in 8 bits can be corrected, so that the security of the system And stability is greatly improved, thereby eliminating the system instability caused by data noise. Most of the pseudo IA architecture server uses a low price of ordinary SDRAM memory, and the SDRAM memory error detection function is relatively simple, such as using parity methods, use 1 bit to detect 8-bit data, this error correction ability is weak, can only probably detect errors. 3. Manage the management chip cured by the real Ia architecture server on the motherboard, managed and diagnoses hardware, and corrects Has faithful ability, when the system has an error, the server can do not depend on the operating system's own error correction, reduce the number of times. The pseudo IA architecture server is software to implement management functions, low robustness, and is subject to the stability of the operating system. 4 The hot swap so-called hot-swap function is to allow users to remove and replace the damaged hard drives, power or boards, etc. without shutting down the system, and improve the timely recovery capabilities of the system to disasters, expand. Sexuality and flexibility, etc. The real IA architecture server uses a dual redundant power supply, which can be used for hot-swappable replacement of power and fans; support hot-swappable SCSI controllers to support hot swaps of hard drives, and ensure server via RAID feature Uninterrupted, maximize the stability and security of the server, when there is a power supply and hard disk failure, there is no need to interrupt the server's work, minimize the number of people-to-off, the pseudo IA architecture server usually uses a single power supply, not shut down The power supply cannot be replaced, and the IO chipset does not support hot-swapping. Therefore, its continuous working time is greatly dependent on the life and burst of breaking equipment in the system. For some servers applied to key tasks, if not shutdown In the case, the damaged RAID card or Ethernet card cannot be replaced, which will greatly increase the system downtime due to hardware failure. 5. I / O quality usually due to disk Access speed can not keep the processing speed of the CPU, so that disk technology is a bottleneck to improve server I / O capabilities. The real Ia architecture server uses a SCSI architecture that supports RAID (redundant disk arrays): RAID0, RAID1, RAID5. RAID 5 uses a special algorithm that can calculate the storage location of any one of the check blocks. This ensures that any read and write operations on the check block will be balanced in all RAID disks, thereby eliminating the possibility of generating bottlenecks, and avoids the serious failure of the system lost fault tolerance due to the damage of the checkboard.
