シャドーイング練習: What is a server? Types of Servers? Virtual server vs Physical server 🖥️🌐 - 動画で英語スピーキングを学ぶ
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What is a server?
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In computing, a server is a dedicated computer or device that provides functionality on behalf of other devices or clients.
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This architecture is called the client-server module.
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Servers can provide various functionalities, often called services, such as sharing resources or data among multiple clients,
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or even performing computation for a client.
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Now, a server could be dedicated to handle one of these
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services only where you would have one dedicated server for a website, one server for data storage, and a server for email.
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And this is a model what larger organizations use.
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Well, you can also set up a server to handle each of these services on the same machine, which is what typically happens in smaller organizations.
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And when we talk about servers, they're generally serving a lot of computers, so people at home Some don't need that because they only have one, two, three or four computers.
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Servers enable you to control and distribute information, as well as a way to protect the information.
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Servers can be distinguished into two main types of servers, a physical server and a virtual server.
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Physical servers are dedicated servers which use the traditional CPU and RAM for that one server.
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Virtual servers, however, use hypervisor to divide the physical server into two
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or more virtual servers which share the resources like CPU and RAM with two or more other servers.
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Most of the servers and enterprises in cloud are virtual servers.
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Businesses need servers to run 24-7 because they're vital to an organization.
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And if a server fails, then the business could suffer losses or jeopardize the business.
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Or an organization.
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So this is why servers need to be more reliable.
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They need to be built with the right resources like high computing CPUs and RAM.
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Servers and server components need to be redundant, meaning if one component or the server fails, it shouldn't impact the whole server.
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Server.
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Servers need to be set up in a redundant fashion, in case a server goes down, then another server should be available to serve the request from desktop clients.
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In AWS, you can set up the servers in multiple availability zones in order to avoid an outage, similarly in Azure and GCP.
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A server should also have a redundant hot-swappable hard drive in the RAID configuration, Because if a hard drive were to fail, then no data loss would happen,
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and the server would still be up and running because of RAID configuration.
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RAID makes it possible to copy the data onto multiple disks, and if a hard drive fails, then it can be removed and replaced without shutting down the whole server,
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and then RAID would rebuild the data onto the new hard drive automatically.
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The servers should also have redundant fiber channel adapters and power supplies.
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Since servers are used by multiple desktop clients, they need to have multiple processor environments.
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IBM CPU.
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IBM servers use Power CPU in their different servers, which has a high computing CPU power.
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AWS cloud servers.
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They have a high computing CPU power.
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An application server is a program that handles all application operations between users and an organization's backend, business applications, or data.
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This type of server is typically used for complex transactions-based applications cloud server.
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Rather than being proved by a single server or virtual server, cloud server hosting services are provided by multiple character servlets that comprise.
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Server Operating System Any server also needs to use a server operating system, such as Linux, Windows Server, Mac, OS Server, and so on.
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Server operating systems are robust and stable, and they're designed to run non-stop and are able to handle thousands of concurrent connections.
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Now there are many different types of servers.
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Types of servers.
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There are many types of servers depending on what server is hosting on it.
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For example, a web server.
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A database server.
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This type of server hosts data in the backend.
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A web server that hosts a website.
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The web server will run the web server software, like HTTP, NGINX.
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It contains all the website's data, including the HTML code and graphics.
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Another type of server is an email server.
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An email server is what facilitates the sending and receiving of email.
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DNS server is a server dedicated to resolving domain names.
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Hope you liked the video.
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Please like, comment, share, and subscribe.
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この動画で鍛える英語スピーキングの目標
この動画は、IT関連の専門用語を使った説明的なスピーチを自然に話す能力を養うのに最適です。「サーバーの種類」「仮想サーバーと物理サーバーの違い」など、専門的な内容を分かりやすく伝えるための語彙や構文を学び、英語スピーキング練習の一環として、論理的な話し方を磨くことができます。YouTubeで英語学習をする際に、こうした実用的なテーマを使うと、日常的な会話だけでなく、専門的な場面でも自信を持って話せるようになります。
フレーズバンク：使い回せる表現
- 「In computing, a server is...」（コンピューティングにおいて、サーバーとは...）- 定義を説明する時の基本フレーズ
- 「Servers can provide various functionalities, often called services, such as...」（サーバーはさまざまな機能、しばしばサービスと呼ばれるものを提供し、例えば...）- 機能を列挙する時の使い方
- 「Virtual servers, however, use... to divide... into...」（しかし、仮想サーバーは...を使って...を...に分割する）- 対比を表す構文
- 「This is why servers need to be more reliable.」（これがサーバーがより信頼性が高い必要がある理由です）- 理由を説明する時の自然な言い方
これらのフレーズを覚えておくと、説明的な英語を話す時にスムーズに繋がります。shadow speak（シャドーイング）の練習に使えるので、動画を何度も聴きながら真似してみてください。
弱点を直そう：発音とリズムのポイント
この動画の中には「redundant」（冗長な）、「hypervisor」（ハイパーバイザー）、「RAID configuration」（RAID構成）などの難しい単語があります。これらの単語の発音は、日本人にとっては「r」と「l」の区別や長い母音の発音が難しいかもしれません。英語の発音を良くするためには、動画の発音を注意深く聴き、口の形やリズムを真似ることが大切です。また、文の中でのアクセントの位置も重要で、「application server」（アプリケーションサーバー）のような複合語では、どこにアクセントがあるかを確認しましょう。シャドーイングを繰り返すことで、これらのポイントが自然に身につき、流暢な英語を話すことができるようになります。YouTubeで英語学習をする際に、こうした細かい部分にも注目すると、スピーキングの質が向上しますよ。
この動画の文法
話し手がよく使っている文型を、動画の実際の表現とともに紹介します。
| 文型 | 動画での表現 |
|---|---|
| 受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる | is called · could be dedicated · can be distinguished |
| 関係詞節 who / which + 節 — 人や物について情報を加える | machine, which is · servers, which has |
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。