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There are no specific criteria.
From the four levels you propose, provide the following information on personal experience for reference:
From the perspective of hardware performance, entry-level: mainly reflected in the three words server, which is different from personal computers or workstations, and its computing performance and data throughput capabilities.
Departmental: On the basis of the entry-level level, you also need to consider the network function and a certain number of visits. It is mainly used for printing services and file services.
Enterprise-level: On the basis of the departmental level, mainly in the functionality and service requirements, usually the enterprise-level server is used for mail, www, ftp, vpn and other functions, due to 24 hours**, so there are higher requirements for hardware stability and power supply, of course, in data security will also be deployed due to different functions.
Carrier-grade: Please keep in mind that all hardware and policy deployment are designed to face 24/7, and most of the hardware is redundant, with high data security!!
To reflect the importance of the server, not only the hardware, but also the software, policies, protection, and many other aspects!
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Zhiyun Youchuang enterprise-level server belongs to the ranks of high-end servers, because of this, there are not many enterprises that can produce this kind of server, but also because there is no industry standard hardware to stipulate what level of enterprise-level servers need to be reached, so we have also seen many enterprises that do not have the level of development and enterprise-level servers claim to have enterprise-level servers. Enterprise-level servers use at least 4 or more CPUs with a symmetrical processor structure, and some are as high as dozens.
In addition, it generally has an independent dual PCI channel and memory expansion board design, with high memory with module bandwidth, large-capacity hot-swappable hard disk and hot-swappable power supply, super data processing ability and cluster performance. The chassis of this kind of enterprise-class server is larger, generally cabinet-type, and some are also composed of several cabinets, like a mainframe. In addition to all the server characteristics of departmental servers, the biggest feature of enterprise-level server products is that it also has a high degree of fault tolerance, excellent expansion performance, fault pre-warning function, advanced diagnosis and RAM, PCI, CPU and other hot-swappable performance.
Some enterprise-class servers also introduce many of the best features of a mainframe computer. The chips used in this type of server are also unique CPU chips developed by several major servers and manufacturers, and the operating system used is generally UNIX (Solaris) or Linux.
Enterprise-level servers are suitable for running in finance, formal bonds, transportation, post and telecommunications, communications, or large enterprises that need to process a large amount of data, high processing speed, and high reliability requirements. Enterprise-class servers are used in large networks with hundreds of computers connected to the network, which require very high processing speed and data security. Enterprise-class servers have the highest hardware configuration and the strongest system reliability.
Having SSDs in servers is already a common choice, especially if only a small percentage of servers have performance issues. SSDs can help users solve server performance bottlenecks. SSDs can also make high-speed storage more processor-friendly and eliminate the potential bottleneck of shared storage networks.
There are currently three SSD formats that meet the criteria: HDD-driven SSDs, SSDDIMs, and PCISSSDs.
The biggest feature of the departmental server is that, in addition to having all the server characteristics of the workgroup server, it also integrates a large number of monitoring and management circuits, has comprehensive server management capabilities, can monitor status parameters such as temperature, voltage, fan, chassis, etc., combined with standard server management software, so that managers can understand the working status of the server in a timely manner. At the same time, most of the departmental servers have excellent system scalability, which can meet the needs of users to upgrade the system in time when the business volume increases rapidly, and fully protect the user's investment. It is a necessary link for the scattered grassroots data collection units in the enterprise network to maintain smooth connection with the data center at the highest level, which is generally the first choice for medium-sized enterprises, and can also be used in finance, post and telecommunications and other industries. >>>More
Users can freely choose CPU, memory, data disk, bandwidth and other configurations according to different needs, and can also upgrade bandwidth at any time without stopping and upgrading CPU and memory within 1 minute, supporting the sustainable development of the business. High availability ensures the stable operation of the business. At present, EMAI cloud servers are available in South China, North China, Southwest China, Central China, Hong Kong, the United States and other regions, fully meeting the business needs of users in different networks and regions such as China Telecom, China Unicom, and Mobile.
When it comes to using an overseas server, there are a few main differences. One. In the case of domestic access, the domestic server is faster than the foreign server. >>>More
No, of course it works, but it will hang up.
It's better to have a professional server. >>>More
Hello landlord, if it is an enterprise that chooses a server, it depends on what aspect of the business it is doing. If it is an enterprise, it generally does not have high requirements for host configuration, even hundreds of megabytes of virtual hosting can be satisfied, and if the overall security requirements are higher, you can also choose cloud hosts or independent servers. >>>More