What is most important for the server

It can be absolutely said that the server must have the following features to work in today's corporate environment: servers must be highly reliable, availability and scalability. Businesses are increasingly reliant on server operations. This dependency makes most server functionality a "mission critical" type.　　An enterprise can calculate the number of hours a server loses productivity in the event of a failure and converts it to an amount. Reliability

Reliability is a reliable and consistent feature, with data integrity and warning of hardware failures prior to the occurrence of two aspects of reliability.

Redundant power supplies and fans, predictable hard disk and fan failures, and RAID (redundant array of independent disks) systems are examples of common reliability features.

High Availability

High availability refers to features that are readily available and can be used immediately. It can refer either to the system itself or to the ability of the user to access its content in real time. Another major aspect of high availability is the ability to recover quickly from system failures. High-availability systems may or may not use redundant components, but they should have the ability to run critical hot-swappable components. Hot plug refers to the ability to replace faulty components with new components when the power supply is still connected and the system is running properly.

A typical example of high availability is detecting potential failures and transparently redirecting them or switching the failed programs to other regions or systems. For example, some SCSI device research automatically transfers data from an unreadable sector to an alternate sector, and neither the operating system nor the user is aware of the change.

Extensibility

Scalability is the ability to increase server capacity (within a reasonable range). Regardless of the size of the server's initial capacity, you can be assured that the capacity can be increased quickly. Because of the increasing number of users accessing the Internet and the increasing volume of transactions, the server eventually needs to be upgraded.

Factors of extensibility include:

Ability to increase memory

Increase the capacity of the processor

Ability to increase disk capacity

Limitations of the operating system

Servers in a client/server system have many different uses. However, it can be categorized into the following four categories: File servers, print servers, database servers, and application servers. Another type of server is the enterprise intranet server that synthesizes the above three kinds of servers.