[HCIA cloud] [1] definition of cloud computing, what is cloud computing, architecture and technical description of cloud computing, Huawei cloud computing products, and description of Huawei memory DD

Introduction to cloud computing

• notes ： I got it hcie-cloud It's a subsidiary of Huawei .

• This chapter focuses on IT Development trend of , The definition of Cloud Computing 、 Trait 、 Deployment mode 、 Service mode and common points , It also introduces the new cloud computing architecture and the traditional IT The difference in Architecture , Understand the technology of Cloud Computing .

• HCIA-CLOUD Direction ：

  • HCIA-Cloud Certification is oriented to basic cloud computing knowledge 、 Configuration and maintenance of basic Huawei cloud computing devices .
  • HCIA-Cloud Certification includes, but is not limited to ： How cloud computing works , Huawei SingleCLOUD Desktop cloud operation management technology ,SingleCLOUD Product interface operation and system routine maintenance .
  • adopt HCIA-Cloud authentication , Will prove that you can use cloud computing IT Basics 、 Cloud computing principles 、SingleCLOUD Platform basics and VDesktop6000 Basic knowledge of the system for basic operation and maintenance .
  • Have through HCIA-Cloud Certified engineers , It means that operators or enterprises have the ability to complete the basic configuration operation and equipment maintenance of Huawei cloud computing equipment .

What is Cloud Computing

• Simply speaking , The definition of cloud computing is ： adopt internet In the way of service , Provide a dynamic and scalable computing mode for virtualized resources 【 Not limited to one direction , As long as this condition is met, it is called Cloud Computing 】

IT Development trend

• IT Is the collection of information processing , Include ： Software 、 Hardware 、 Communication and related services
  • wikipedia
    IT（ China ： information technology ; English ：information technology） It is the general name of various technologies mainly used to manage and process information , It mainly applies computer science and communication technology to design 、 Development 、 Install and implement information system and application software .
  • Gartner
    This is the common term for the entire spectrum of technologies for information processing, including software, hardware, communications technologies and related services.
    IT It is the collection of information processing , Include ： Software 、 Hardware 、 Communication technology and related services .

• IT At the heart of ： Core architecture based on Data Center
  
• trend
  
  
• Changes in business models
  
  
  
  

The people around us it

• In life it
  Including but not limited to the following , For example, baidu cloud , Cloud notes , Online music app All belong to cloud ！
  Or it can be understood as , As long as the storage is not local , It's called ” cloud “ turn .
  
• At work it
  

The definition of Cloud Computing

• National institute of standards and technology （NIST） Definition ：
  Cloud computing is a model , It can realize anytime, anywhere , Conveniently , Get the required resources on demand from the configurable computing resource sharing pool （ for example , The Internet 、 The server 、 Storage 、 application 、 And services ）, Resources can be quickly supplied and released , Minimize the workload of managing resources and interaction with service providers .
  Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
• Generally speaking , cloud , It's the Internet 、 A metaphor for the Internet , That is, the abstraction of the Internet and the underlying infrastructure needed to establish the Internet .“ Calculation ” It refers to the computing services provided by a sufficiently powerful computer （ Including various functions , resources , Storage ）.“ Cloud computing ” It can be understood as ： Through the Internet, you can use a sufficiently powerful computer to provide services for users , The usage of this service can be described in a unified unit .

Five basic characteristics of Cloud Computing

• 1、 Self service on demand （On-demand Self-service）
  I don't know you know “ cloud ” no , For example, Hua Weiyun , Alicloud and so on , You can buy virtual machines in it , And then the memory 、cpu、 Storage can be dynamically expanded or shrunk , This is called on-demand self-service .
• 2、 Extensive network access （Broad Network Access）
  such as 4G,5G etc. .
• 3、 Pooling resources （Resource Pooling）
  Does the server have a concept ？ Set up the server as a cluster , Such as openstack,VMware And other virtualization functions .
• 4、 Fast flex （Rapid Elasticity）
  Whether it's self-service , Or what we said in resource pooling , Can achieve this function , Elastic expansion mainly refers to ： Memory 、cpu、 Storage 、 The Internet
• 5、 Measurable Services （Measured Service）
  1 Self service in , You need money , Then money is provided by measurement services , For example, how much is the virtual machine you configure for an hour, a day, and a month .

Cloud computing 4 Class deployment mode

Private cloud （Private Cloud）

Enterprises use their own or leased infrastructure resources to build their own cloud ;

Community cloud / Industry Cloud （Community cloud）

A cloud of shared infrastructure built for a specific community or industry ;

Public cloud （Public cloud）

The cloud of large infrastructure leased to the public ;

A hybrid cloud （Hybrid cloud）

A cloud consisting of two or more deployment patterns ;

Cloud computing 3 Service modes

• 3 Service concept
  
• Detailed correspondence
  

Cloud infrastructure as a service （IaaS）

Rental processing capacity 、 Storage space 、 Basic computing resources such as network capacity ;

Cloud platform is service （PaaS）

Provide a deployable cloud environment for customer developed applications ;

Cloud software as a service （SaaS）

Provide applications on the network that can directly make ;

Cloud computing 8 Common points

• On a large scale （Massive scale）
• Homogenization （Homogeneity）
• virtualization （Virtualization）
• Elastic calculation （Resilient computing）
• Low cost software （Low cost software）
• geographical distribution （Geographic distribution）
• Service orientation （Service orientation）
• Advanced safety technology （Advanced security technologies）

The development of Cloud Computing

• Technical specification
  
• The history of the Internet 【 Expanding knowledge 】
  
• History of Computing 【 Expanding knowledge 】
  
• History of cloud computing 【 Expanding knowledge 】
  

The architecture of Cloud Computing

new it framework - Cloud computing

Tradition IT Differences between institutions and cloud computing architecture

Cloud computing technology

Cloud computing technology system : Core technology identification

Key technologies of Cloud Computing

Hardware technology of Cloud Computing ： Computing architecture

Hardware technology of Cloud Computing ： The storage system

Hardware technology of Cloud Computing ： Networking of data centers

Software technology of Cloud Computing ： Cluster management

Huawei products

• Since it belongs to Huawei cloud Series certification , Of course, you need to know where Huawei products are purchased ~
  In these years of work, I have encountered almost all manufacturer servers 【 Including minicomputers 】, Others don't say , Simply take management mouth as an example , I think Huawei is the most user-friendly management interface , Not one of them. . As for why , In the future, you can contact Huawei's servers , And there are servers from other manufacturers , You will know what I mean when you enter the management port .
• Official website address ： Huawei cloud official website
  Huawei cloud account and Huawei account are shared , So you can log in directly with Huawei account .
  

Huawei cloud computing products

• Cloud computing is what we often call virtual machine , If you need it, you can buy it directly on this interface
  • Domestic and foreign network requirements need to be filed , The advantage is that it's cheap .
  • Abroad The external network does not need to be filed , The disadvantage is that the price is too expensive .
    

Huawei enterprise product description

• Huawei's various scene websites are different , But the account number is universal , Here you can also log in directly with your existing Huawei account .
  Official website address ： Huawei enterprise products

Huawei server description

• Server introduction official website address ： Computing products 3D Exhibition

• notes ： Huawei is no longer selling x86 Architecture server , main arm framework Server for , So you can see , It's basically arm Server model of the architecture .
  Such as ：TaiShan And Kunpeng series servers .
  

Server model introduction 、DDR Channel configuration description

• The name is usually xxxx Format , Such as ：TaiShan Series of 2280 Server model decomposition ：
  

• 2280：

  • 2： 2U 【 Server size , Server cabinets are all based on U Unit 】
  • 2： Physics cpu Number 【 commonly 1 individual cpu Corresponding 4 passageway 16 Memory modules （ A passage 4 Memory modules ）】
  • 8：DDR passageway 【 Number of memory 】
  • 0： Not specifically 【 commonly ：8 finger x86 framework ,0 finger arm framework 】

• DDR Access map

  • cpu The name is cpu0 and cpu1【 That is from 0 Start on the th 】
  • DDR Meaning of existence ： without DDR Only one memory module can be transferred at a time 【 No matter how many memory modules you have 】
  • But with DDR Then what? , Memory modules cannot be inserted randomly , Otherwise, the power on self-test cannot be passed, resulting in failure to power on , Or the performance is not optimal .
    

• DDR To configure , We can go to the tools section of the official website 【 Basically, all the problems you can think of can be found here , Therefore, Huawei has done very well in this regard 】
  
  What we need here is to calculate the memory configuration , So click ： Intelligent Computing - Only the product memory configuration assistant can be calculated
  
  We take Mount Tai as mentioned above 200 Series server as an example
  

• Enlarge the picture and DIMM explain , Such as ：DIMM110

  • 1： That one CPU
  • 1：CPU The number of DDR passageway
  • 0：DDR Which memory module of the channel

• There is nothing to say
  

• As I do 14 root , Will be empty 2 Come out of a position , Pictured , Anyway, how many memory modules do you have , You can get as many as you want , Just plug in ok
  

• Memory above cpu In short , So storage , The data stored in the server must be stored in the hard disk , But the hard disk of the server and we pc Your hard disk is similar , But there's a difference in how it's used , The server will do for the hard disk raid, About raid, My previous article explained , You can get to know ：
  RAID0、1、3、5、6、10、50 And hot spare ultra detailed description