What are the four main categories of servers?

Servers are mainly divided into four categories: entry-level servers, workgroup-level servers, department-level servers and enterprise-level servers; servers provide computing or application services to other clients in the network; servers have high-speed CPU computing capabilities, long-term reliable operation, powerful "I/O" external data throughput capabilities, and better scalability.

Server types are divided into four categories according to application level: entry-level servers, workgroup-level servers, department-level servers and enterprise-level servers; they are divided into general-purpose servers according to usage There are two types of servers: dedicated servers and dedicated servers. It can also be divided by chassis structure, processor architecture, etc.

Divided according to application level:

1. Entry-level server

Entry-level servers usually use only one CPU and Configure corresponding memory (such as 256MB) and large-capacity IDE hard disk as needed. If necessary, IDE RAID (a disk array technology, the main purpose is to ensure the reliability and recoverability of data) will be used for data protection. Entry-level servers are mainly aimed at users based on network operating systems such as Windows NT and NetWare. They can meet the needs of office-based small and medium-sized network users for file sharing, printing services, data processing, Internet access and simple database applications. They can also be used in Complete services such as E-mail, Proxy, DNS, etc. in a small area.

For the office needs of a small department, the main function of the server is to complete file and print services. File and print services are one of the most basic applications of the server. The requirements for hardware are low, and single-server is generally used. An entry-level server with one or two CPUs is sufficient. In order to provide enough print buffer for the printer, a large memory is required. In order to cope with frequent and large file access, a fast hard disk subsystem is required, and good management performance can improve the efficiency of the server.

2. Workgroup-level servers

Workgroup-level servers generally support 1 to 2 PⅢ processors or a single P4 (Pentium 4) processor. Large-capacity ECC (a memory technology, mostly used on servers) memory with comprehensive functions. It is highly manageable and easy to maintain, and has various features necessary for small servers, such as I/O (input/output) system using SCSI (a bus interface technology) bus, SMP symmetric multi-processor structure, Optional RAID, hot-swappable hard drives, hot-swappable power supplies, etc., with high availability features. It is suitable for providing Web, Mail and other services to small and medium-sized enterprises, and can also be used for the construction of digital campus networks and multimedia classrooms in educational departments such as schools.

Normally, if the application is not complex, for example, there is no large database to manage, then the use of workgroup-level servers can meet the requirements. The quality of domestic servers is almost the same as that of famous foreign brands. Especially for mid- to low-end products, domestic brands have greater cost-effectiveness advantages. Small and medium-sized enterprises can consider choosing some domestic brand products. In addition, large manufacturers such as HP have even launched servers customized specifically for small and medium-sized enterprises. However, if individual enterprises have more complex business, more data traffic, and if funds permit, they may also consider choosing department-level and enterprise-level servers as their mission-critical servers. HP, DELL, IBM, and Inspur are all relatively good brands.

3. Department-level servers

Department-level servers can usually support 2 to 4 PⅢ Xeon (Xeon) processors and have high reliability and availability. , scalability and manageability. First of all, it integrates a large number of monitoring and management circuits, has comprehensive server management capabilities, and can monitor status parameters such as temperature, voltage, fan, chassis, etc. In addition, combined with server management software, managers can keep abreast of the working status of the server. At the same time, most department-level servers have excellent system scalability. When users’ business volume increases rapidly, they can promptly upgrade the system online, which can protect users’ investments. Department-level servers are a necessary link to maintain smooth connectivity between the various grassroots data collection units dispersed in the enterprise network and the highest-level data center. Suitable for medium-sized enterprises (such as finance, postal and telecommunications industries) as data centers, Web sites and other applications.

4. Enterprise-level servers

Enterprise-level servers are high-end servers and can generally support 4 to 8 PIII Xeon (Xeon) or P4 Xeon (Xeon) The processor has an independent dual PCI channel and memory expansion board design, high memory bandwidth, large-capacity hot-swappable hard drive and hot-swappable power supply, and has super data processing capabilities. This type of product has a high degree of fault tolerance, excellent scalability and system performance, and extremely long system continuous running time, which can protect users' investment to a great extent. Can be used as a database server for large enterprise-level networks.

Enterprise-level servers are mainly suitable for large enterprises and important industries (such as finance, securities, transportation, post and telecommunications, communications and other industries) that need to process large amounts of data, high processing speed and extremely high reliability requirements. They can be used Provides ERP (enterprise resource allocation), e-commerce, OA (office automation) and other services.

A server is a type of computer that runs faster, has a higher load, and is more expensive than an ordinary computer. The server provides computing or application services to other clients in the network (such as PCs, smartphones, terminals such as ATMs, and even large equipment such as train systems). The server has high-speed CPU computing capabilities, long-term reliable operation, strong I/O external data throughput capabilities, and better scalability. According to the services provided by the server, generally speaking, the server has the ability to respond to service requests, undertake services, and guarantee services. As an electronic device, the internal structure of a server is very complex, but it is not much different from the internal structure of an ordinary computer, such as: CPU, hard disk, memory, system, system bus, etc.

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