What Is Server Maintenance?

In a broad sense, a server is a computer system in the network that can provide certain services to other machines (if a PC provides external FTP services, it can also be called a server). In a narrow sense, a server refers to some high-performance computers that can provide services externally through the network. Compared with ordinary PCs, stability, security, performance, and other requirements are higher, so the CPU, chipset, memory, disk system, network and other hardware are different from ordinary PCs.

Server security maintenance

As a node of the network, the server stores and processes 80% of the data and information on the network, so it is also called the soul of the network. Make an image metaphor: The server is like a post office switch, and the fixed or mobile network terminals such as microcomputers, notebooks, PDAs, and mobile phones are like telephones scattered in homes, various office places, and public places. We exchange and communicate with the outside world in daily life and work. We must pass through the switch to reach the target phone. Similarly, network terminal devices such as computers in homes and enterprises go online to obtain information, communicate with the outside world, and entertain. Must pass through the server, so it can be said that the server is "organizing" and "lead" these devices.

It is a high-performance computer on the network that provides various services for client computers. It provides hard disks, tapes, printers, modems, and various special communication devices connected to it under the control of a network operating system. Customer site sharing can also provide network users with centralized computing, information publishing, and data management services. Its high performance is mainly reflected in high-speed computing capabilities, long-term reliable operation, and powerful external data throughput capabilities.

The composition of the server is basically similar to the microcomputer. There are processors, hard disks, memory, and system buses. They are specially formulated for specific network applications. Therefore, the server and the microcomputer have a processing capacity, stability, reliability, security, scalability There are great differences in the aspects of manageability and manageability. Especially with the advancement of information technology, the role of the network is becoming more and more obvious, and the requirements for the data processing capabilities and security of your own information system are becoming higher and higher. If you are stolen by hackers in the process of e-commerce Passwords, loss of key business data; if you cannot access them normally at the ATM, you should consider the commander behind the equipment system-the server, rather than complaining about the quality of staff and other objective conditions.

In response to the phrase "difficult to win the world, it is more difficult to defend the world", the maintenance of the server is like "guarding the world"! A little chaos will paralyze the entire network. As a member of network management, the author has encountered many problems in actual maintenance, and therefore has a little experience. Maintenance can be divided into hardware maintenance and software maintenance. At the same time, maintaining the server requires a deeper understanding of the server's hardware system, operating system, and application software system.

Hardware maintenance is as important as software. Readers and friends must have a clear understanding of the server and even the hardware system of the entire network environment in order to be sure. However, it is simple and simple. The maintenance of the hardware is nothing more than adding and unloading equipment, replacing equipment, and removing dust, fire and moisture from the equipment.

1. Work to increase memory and hard drive capacity. We should all know that increasing memory is the most common. When more applications are installed on the server, network resources are increased, and network applications are diversified, the server needs to be expanded to meet the needs of continuous development. There are problems here: First, when adding memory, you should choose the same manufacturer and the same model of memory as the original memory! The author has encountered it, once because the root DDR was added because there is no dedicated ECC memory at hand, the system error caused the system to fail to restart!

2. Inside the server is not a big problem when disassembling it. The key is to pay attention when opening the case. Many server cases have hidden secrets. Be sure to read the manual carefully before you start; The inexplicable failures are all caused by the dust. Generally, the machine should be disassembled and cleaned regularly every month.

Here I have to repeat the old tune. Servers generally provide disk array functions, but I see that many computer room servers have only one hard disk! In this way, there is no guarantee of data redundancy, and there is no security guarantee and performance optimization for storage. There is also a problem. Many administrators only think that some components are the most important and put all their efforts into maintenance, while other components ignore their optimization work, so that the functions and performance of these components are not available. Very good play, this is also a waste of resources! Should be taken seriously!

Software Maintenance

Software system maintenance is also the largest part of server maintenance, generally including operating system, network services, database services, user data and other aspects of maintenance.

The operating system is the software foundation on which the server runs, and its importance is self-evident. Most server operating systems today use Windows NT or Windows 2000 Server as the operating system, which is relatively easy to maintain.

In Windows NT or Windows 2000 Server, you should always open the Event Viewer and check the system log, security log, and application log for any unusual records. In addition, we all know that the operating system is vulnerable, so we need to download the latest Service Pack (upgrade service pack) from Microsoft's website to install and fix the security holes in a timely manner.

There are many network services, such as WWW service, DNS service, DHCP service, SMTP service, FTP service, etc. As more and more services are provided by the server, the system is also prone to confusion and security will be reduced. At this time, it may be necessary to reset Set the parameters of each service, open the firewall, and make it run safely and normally.

Database is an important data source. After a certain period of operation and use, the database performance needs to be adjusted to enter an optimized state. There is also a regular backup of the database, just in case.

The popular and rampant hacker attack is the SQL injection attack. Although the SQL injection attack is inseparable from the programmer's habit, as a follow-up security, the database security configuration is indispensable. Certification is also required

Similarly, as the usage time increases, a large amount of data may be stored in the server database. These data should be relatively valuable resources, so they need to be organized and engraved into CDs for permanent storage. Even if the server fails, the data can be recovered quickly.

Let s take a look at some information and mention the statistics during server maintenance: According to the statistics, 80% of the servers in the industry are not optimized, 90% of the servers are not regularly monitored for system performance, and 95% of the servers are not comprehensive. Data redundancy security measures. Nearly half of the servers do not use data backup solutions. These servers are actually in a sub-healthy state, which is embodied in the following: power supplies, fans, hard disks, controllers, cables, network cards, CPUs And other key components did not use hardware redundancy, resulting in reduced system security; the use of low-speed, compatible equipment components, improper configuration of memory, CPU, hard disk controller, etc. caused performance degradation; no use of any network There are serious flaws in the management software and hardware of the server. " From the above survey statistics, it is not difficult to find that, in fact, most servers are still exposed to many security risks! But this is not to be solved. In fact, the maintenance of the server is really quite complicated. The key is how to find a suitable maintenance method. This can only be achieved through constant practice!

In general, the security and stability of the server is the most fundamental. Daily maintenance should also be based on this purpose, so that every step can be implemented and the network performance can be truly improved!