Computer knowledge classroom: the necessary knowledge of the server

The rookie pays attention to it, the computer knowledge class starts, today we are going to introduce you to the necessary knowledge of the server, the server has a pivotal position in our life, so everyone wants Let's take a good look at this lesson. Let's introduce a few questions first.

1 Is the two-way equal to the dual-core?

Question: I often hear that the two-way Xeon XX server has recently appeared dual-core Xeon, both CPUs, is it two-way Equal to dual-core?

Answer: Not

Regardless of the server's single, dual, four-way or even eight-way, the "road" refers to the number of physical CPUs of the server, that is, The number of CPU sockets on the server board.

The recent emergence of dual-core processors is to encapsulate two CPU cores inside a physical CPU. This has the advantage of allowing users to have more powerful performance without increasing costs. Moreover, it can significantly reduce the performance-to-power ratio, which is also of positive significance for enterprise users to save on the cost of use.

2 The difference between Xeon and Pentium

Question: In many servers, there are powerful processors, and Pentium 4 as a processor, except for Pentium 4. Processor server products are cheaper, what is the difference between Xeon and Pentium?

Intel Pentium 4 631 3.0GHz (box)

Intel Xeon 3.2G (800MHz/2M/box)

Answer: The Xeon processor used on the server is basically the same as the normal P4 processor.

One of the differences is that the Intel Pentium 4 processor began to classify the Pentium 4 processor as a personal processor. Users can't build a 2-way server system with two Pentium 4 processors. Higher Xeon processor. Xeon processors are currently classified into Xeon DP (maximum support for dual processing) and Xeon MP (maximum support for 8-way processing).

The second difference is that the secondary cache is different. Xeon's L2 cache is 1MB to 16MB, P4's L2 cache is 512KB to 1MB, and the L2 cache capacity is also an important factor in determining server processing performance.

The Xeon series CPUs are mostly 604 interfaces, while the P4 CPUs are mostly 478 pins or 775 architecture.

Note: In the X86 architecture, in addition to the Intel Pentium and Xeon series processors, AMD also provides a dedicated processor for the server - Opteron Opteron, which can support up to 8 channels.

AMD Opteron 865 865 (散)

3 types of servers

Question: The server is divided by structure, there are several types?

Answer: At present, according to the shape structure, the server can be divided into three types: tower type, rack type and blade type.