1th Day of Linux Learning

Computer systems consist of two major departments of hardware (Hardware) system and Software (software) system

Computer composition

Cpu

Alu of the arithmetic device

Controller CU

Memory Rom/ram

Input device

Output device

Xeon CPU xeone7-4809

Single Failture one point failure should be avoided in operation and maintenance system

Servers server is a computer that is a high-performance computer that provides a variety of services to client computers in the network

Server By application function can be divided into: Web server, database server, mail server, file server, middleware application server, log server, monitoring server, program version control server, virtual machine server, print server, domain control server, multimedia server, communication Server, ERP server, etc.

Server by Form factor: Tower server, rack server, Blade server

Rack-Mount Rack servers

Rack server has a width of 19 inches and a height of u

1u=1.75 inches = 44.45 mm, usually with 1u,2u,3u,4u,5u,7u several standard servers. The size of the cabinet is also used in general industry standards

Server Hardware--cpu

The CPU is the abbreviation for central processing Unit, which is the CPU. Composed of controllers and operators, which is the most important part of the whole computer system.

Server CPU Company

Intel Corporation

Xeon Xeon

Itanium itanium®

AMD Inc.

Althlon MP

Ibm

Powerpc

Frequency: The clock frequency of the CPU (CPU clock speed) is the system bus operating frequencies. Generally speaking, the higher the frequency, the faster the CPU speed. Since the internal structure is different, not all CPUs with the same clock frequency have the same performance.

1th Day of Linux Learning