Today, we talked about several issues related to server basics, and it is also a few common problems that puzzled the "novice" in the server field:
1 Double-core?
Question: I often hear that the two-way Xeon XX server, and recently appeared dual-core Xeon, are two CPUs, is it two-way equal to dual-core?
Answer : not
whether single, dual, quad or even eight-way servers, one of the "road" refer to the number of physical CPU server, which is the number of servers on the motherboard CPU socket.
recent dual-core processor, is inside a package with two physical CPU CPU core, this advantage is the ability to allow users under the premise of increased cost much, have a more robust performance. 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 Xeon and Pentium difference
problem: in many servers, there take Xeon processor for, but also to take as the Pentium 4 processor, except with the Pentium 4 The server product of the processor is cheaper. What is the difference between Xeon and Pentium?
Intel Pentium 4 631 3.0GHz (box)
Intel Xeon 3.2G (800MHz/2M/box)
answer: Xeon processor used on the server and its ordinary P4 processor core is basically the same. One
difference is the Intel Pentium 4 processor begins, they put a Pentium 4 processor, classified as individual processors, the user can not be two Pentium 4 processor architecture 2-way server systems, and the development of computing performance 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).
bis difference is different from the secondary cache. 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.
Xeon series CPU more than 604 interfaces, and the P4 CPU, more than 478 or 775-pin architecture.
Note: In the X86 architecture, in addition to the Intel Pentium, Xeon series processors, AMD also provides a dedicated processor for the server - Opteron Opteron, which can support up to 8 channels. Several types
problem
AMD Opteron Opteron 865 (bulk)
3 Server: The server is divided according to the 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.
tower server
generally tower server chassis and our common PC chassis similar, while large tower chassis will be much thick, overall dimensions there is no fixed standard.
rack server rack server is due to meet the company's densely deployed, in order to form a 19-inch rack as the server type standard width, height from 1U to the number of U. Placing the server in a rack is not only good for routine maintenance and management, but it can also avoid unexpected failures. First, placing the server does not take up too much space. The rack server is neatly discharged into the rack without wasting space. Secondly, the connecting wires and the like can also be neatly placed in the rack. Power cables and LAN cables can be routed in the cabinet to reduce the number of cables that are stacked on the ground, thus preventing accidents such as kicking off wires.
The specified size is the width of the server (48.26cm = 19 inches) and the height (multiple of 4.445cm). Since the width is 19 inches, the rack that satisfies this requirement is sometimes referred to as a "19-inch rack."
Blade Server
Blade Server is a low-cost HAHD (High Availability High Density) platform designed for specific application industries and high-density computer environments. Each of these "blades" is actually a system motherboard, similar to a separate server. In this mode, each motherboard runs its own system, serving a different set of users, and is not related to each other. However, you can use system software to aggregate these boards into a single server cluster. In cluster mode, all motherboards can be connected to provide a high-speed network environment that can share resources and serve the same user base.
4 What is “U”?
Question: What do you mean by “U” in 1U and 2U servers? Is it the number of server processors?
Answer: “U” refers specifically to the thickness of the rack server in the server field. It is a unit that represents the external dimensions of the server and is an abbreviation of unit. The detailed size is determined by the American Electronic Industry Association (EIA) as an industry group. The reason for
server predetermined size, is to enable the server to maintain an appropriate size of the iron or aluminum on the rack. The rack has a screw hole for fixing the server, and it is aligned with the screw hole of the server and fixed by screws.
The thickness is 4.445cm as the basic unit. 1U is 4.445cm, and 2U is 2 times that of 1U is 8.89cm. In other words, the so-called "1U rack server" is a product that meets the EIA specifications and has a thickness of 4.445 cm. What is the difference
5 servers and workstations is
question:? What is the difference between server and workstation to workstation
server is to provide various services, network communications services? , file sharing services, hardware sharing services, various resource services. The workstation can also help the server to offload computing and other tasks while acquiring various resources of the server.
servers and workstations are high-performance computer, a server is a relative term to focus on data throughput, the supporting peripherals (hard disk, I /O slots, etc.) more; and is focused on the workstation Graphics processing capabilities, so the peripherals are relatively small, but using a framework designed specifically for graphics processing, using high-end graphics cards, support for 3D image processing. Workstations are mainly used in various design and multimedia production fields.