| Gartner's 新興技術成熟周期
從效能計算理念談起
蓬勃發(fā)展的云計算
計算是一種模型
云計算：多種云模型
（1）云計算的概念 （2）云計算的優(yōu)勢 （3）云計算產生的原動力 （4）云計算帶來的變革 云計算的概念--定義 云計算 （Cloud Computing）是基于互聯(lián)網的相關服務的增加、使用和交付模式，通常涉及通過互聯(lián)網來提供動態(tài)易擴展且經常是虛擬化的資源。云是網絡、互聯(lián)網的一種比喻說法。過去在圖中往往用云來表示電信網，后來也用來表示互聯(lián)網和底層基礎設施的抽象。因此，云計算甚至可以讓你體驗每秒10萬億次的運算能力，擁有這么強大的計算能力可以模擬核爆炸、預測氣候變化和市場發(fā)展趨勢。用戶通過電腦、筆記本、手機等方式接入數據中心，按自己的需求進行運算。 注意這幾個詞：Compter，Compute，Computing，Computational 云計算的概念--特征 1.云計算為用戶提供了最可靠、安全的數據存儲中心，因此用戶不必擔心數據丟失以及病毒入侵等等麻煩。 2.云計算對用戶端的設備要求最低，使用起來也最方便。 3.云計算可以輕松實現(xiàn)不同設備間的數據與應用共享。 4.云計算為我們使用網絡提供了幾乎無限多的可能 云計算的概念--分類（服務類型）
云計算的概念--分類（服務方式） 共有云：為外部提供服務，外部的企業(yè)。不受企業(yè)管理。 私有云：企業(yè)內部、關注有效的利用企業(yè)內部的資源 混合云：企業(yè)不僅用到共有云，而且使用私有云，這種方式更注重的是共有云與私有云的連接，溝通。
云計算的概念--相關概念辨析?
云計算的優(yōu)勢
云計算產生的原動力
資源虛擬化 虛擬化技術可以將物理資源等底層架構進行抽象，使得設備的差異和兼容性對上層應用透明，從而允許云對底層千差萬別的資源進行統(tǒng)一管理。 面向服務構架
軟件即服務
云計算帶來的變革
7類常見的云計算應用場景 事實證明，云計算可以降低成本、提高靈活性和彈性，以及優(yōu)化資源利用，從而提高競爭力。下文介紹了云計算用于提高實現(xiàn)業(yè)務目標的能力的幾種情況。 基礎結構即服務(IaaS)和平臺即服務(PaaS) 就IaaS而言，如果公司想要節(jié)省購買、管理和維護IT基礎結構方面的投資成本，那么根據按次計費方案使用現(xiàn)有的基礎結構似乎是顯而易見的選擇。出于同樣的原因，也有一些組織會選擇使用PaaS，同時還會設法在隨時可用的平臺上提高開發(fā)速度，從而部署應用程序。 私有云和混合云 在鼓勵使用云的眾多措施中，有這樣兩種情況，即組織想要通過使用云(特別是公共云)尋找對準備部署到其環(huán)境中的某些應用程序進行評估的方法。在測試和開發(fā)可能受時間限制的情況下，采用混合云方法允許測試應用程序工作負載，因此可在無需初期投資的條件下提供舒適的環(huán)境，這樣就不會在工作負載測試失敗時顯得無用。
混合云的另一種用途也是在有限的使用高峰期間的擴展能力，通常非常適合托管可能很少使用的大型基礎結構。在即用即付的前提下，組織可能會在需要時尋求掌握環(huán)境的其他能力和可用性。 測試和開發(fā) 云的最佳使用場景可能是測試和開發(fā)環(huán)境。這需要保證預算，設置環(huán)境中的實物資產、重要的人力和時間。然后，還要進行平臺的安裝和配置。所有這些工作通常會延長項目的完成時間，延長里程碑。 借助于云計算，您現(xiàn)在可以方便地選擇根據您的需求量身設置的即時可用環(huán)境。這通常會結合(但不限于)自動配置物理資源和虛擬資源。 大數據和分析 云計算可以實現(xiàn)的優(yōu)勢之一，就是可以使用大量結構化和非結構化數據，利用獲取業(yè)務價值的優(yōu)勢。 零售商和供應商現(xiàn)在可以提取來自消費者購買模式的信息，進而將他們的廣告和市場竟銷活動定位到特定的群體。社交網絡平臺現(xiàn)在能夠為與組織用來獲取有用信息的行為模式有關的分析提供基礎。 文件存儲 使用云，您可以存儲文件，并且通過任意支持Web的接口訪問、存儲和檢索文件。WebService接口通常比較簡單。您可以隨時隨地獲得高可用性、高速、高可擴展性和高安全性的環(huán)境。在這個場景中，組織只需要為他們實際使用的存儲量付費，而且在此過程中，無需監(jiān)督存儲基礎結構的日常維護。 此外，還可以將數據存儲在內部部署或外部部署上，具體取決于法規(guī)合規(guī)性要求。根據客戶規(guī)范要求，可以將數據存儲在由第三方托管的虛擬存儲池中。 災難恢復 這是根據災難恢復(DR)解決方案的成本效益使用云產生的另一個好處：以更低的成本更快地從眾多不同的物理位置中恢復，相比之下，傳統(tǒng)的DR站點擁有固定資產、嚴格的程序，并且成本較高。 備份 備份數據一直是一項復雜且耗時的操作。這包括維護一系列磁帶或驅動器，手動收集這些磁帶或驅動器并將它們分派到備份設備中，而且原始站點和備份站點之間可能會發(fā)生所有固有問題。這種確保備份執(zhí)行的方法無法避免用盡備份介質等問題，而且加載備份設備執(zhí)行恢復操作也需要時間，還容易出現(xiàn)設備故障和人為錯誤。 基于云的備份雖然不是靈丹妙藥，但肯定比以往的備份方式要好得多?，F(xiàn)在，您可以自動將數據分派到網絡上的任何位置，同時可以確保不會存在安全性、可用性或容量問題。 雖然上述云計算的用法介紹得不是特別詳盡，但通過與傳統(tǒng)替代方法的比較，確實會激勵我們使用云，它能夠提高IT基礎結構的靈活性，同時能利用大數據分析和移動計算。 英文擴展 Cloud computing is all the hype right now but what does it really mean do you have to be sitting on a mountain with a computer among the clouds or on a plane with a laptop does it work when it's sunny can you actually type on a cloud computing keyboard cloud computing is pretty big and it's growing bigger every day there are basically three layers to cloud computing companies use them differently based on what they offer at the bottom is the foundation the infrastructure this is where things start and where people begin to build this is the layer where cloud hosting lives So let' s talk about hosting in the cloud which is an older concept that due to technology advances is finally starting to work really well let's say you are a company and you have a website and the website has a lot of short conversations that are exchanged between members you start with a few users talking to each other and they start telling their friends about your site and they tell their friends and the friends tell their friends and so on you are successful but with success can come problems your equipment just can't keep up with the demand your service slows down and suddenly you are in trouble a few years ago you would have put your website on a computer or server somewhere and when your success kicked in you had to run around and buy or rent new servers set them up or have someone set them up for you hundreds of thousands of companies do this now it costs a lot of money and it takes lots of time this is called hosting it takes time to set them up and they cost quite a bit of money to keep running all the time you pay for these servers when you are using them andyou pay for them when you are not using them you really just want to build your service and improve your product but instead of success your customers are getting angry and your successful business is shrinking away now you have a better option cloud computing with cloud computing you have access to computing power instantly when you need it put your website on a cloud server just like you would put it on a dedicated server and when people start visiting your site if you suddenly need more computing power dedicated to your website you can scale up as much as you need almost instantly you get your computing power as you need it from the cloud on-demand and your customers stay happy without noticing any difference and if your traffic dips backdown you can release your servers back into the cloud just as easily this is a major advantage so I'll say it again when you need more computing power you can get it instantly from the cloud and when you're done with it you release it back to the cloud billing is easy too it works the same way you pay for gas or electricity when you turn on a light the meter starts running and youare billed for the electrical power that you take from the power grid and when you're done with the light you turn itoff and the meter stops running or you can think of it like getting a taxi the meter runs when you ride it runs much slower when you stop and whenyou're done with your ride you get out andyou pay your fare why you buy the wholetaxi when you can just pay for the tripbut wait how do you actually work withthe cloud you can't physically touch your Hardware easy using your own personal computer you remotely accessyour cloud server and control it you canput whatever you need on it website orsoftware or code whatever and then just disconnect it when you are doneyou never actually touch it physically the key with cloud computing is notto focus on the hardware you just focus on your website or your softwareor code or whatever it is you're doingthink of it like you would any cloudservice do you really care where on what physical server your email is hostedisn't it vastly more important how the service works and that it's reliable and stable and easy to use here are threereasons why cloud hosting is becoming so popular one scalability it's easy to grow or shrink to match your demand if you need one - or ten servers with cloud hosting you can easily grow or shrink the number based on what you need right now - cloud hosting is instant the computing power is there when you need it you just turn it on whatever you need is instantly available in the cloud and when your need goes down you can simply turn them off three save money you only pay for what you use and not for having equipment sit around just in case you might need it with cloud hosting you can stop worrying about your hardware you can work on building your business instead using cloud hosting will save you time and money and it's there for you to use instantly so dump those old servers and head to the clouds this has been cloud computing by Timand Michael at go grid 【Task】每人寫下10個重要的名詞 【問答】 百度云是云計算的一種么？是的，是云計算公有云的其中的一種，屬于公有云存儲的一種。 【擴展閱讀】
文章來源：電氣工控自動化。如上內容為青島信息港（www.xiewudingchuang.com）官方網站綜合整理發(fā)布，版權歸原作者所有。青島信息港官方網站是山東青島區(qū)域化綜合性新媒體平臺，目前青島信息港已全網覆蓋，主要有今日頭條、微博、微信、嗶站、知乎、搜狐新聞、網易新聞、騰訊新聞、新浪新聞等商業(yè)平臺，以及中央和省市地方官方媒體平臺入駐號，實現(xiàn)了全網覆蓋。青島信息港是山東半島地方信息門戶，擁有廣播電視經營許可證，按規(guī)定進行工信部和公安局的備案，內容源于網絡，版權歸原網站所有，如有侵權請聯(lián)系。如需轉載時請保留原版權的完整信息，否則追究侵權責任。 |
| 手機版| 青島信息港
( 魯ICP備2021036587號 ) 
魯公網安備 37020302371992號|網站地圖
GMT+8, 2025-7-13 12:30 , Processed in 0.198772 second(s), 25 queries .
廣播電視節(jié)目制作經營許可證 編號：（魯）字第1970號
