์‰๋„์ž‰ ์—ฐ์Šต: What is a server? Types of Servers? Virtual server vs Physical server ๐Ÿ–ฅ๏ธ๐ŸŒ - YouTube๋กœ ์˜์–ด ๋งํ•˜๊ธฐ ๋ฐฐ์šฐ๊ธฐ

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โธ ์ผ์‹œ ์ •์ง€
What is a server?
54 ๋ฌธ์žฅ
๋ฌธ์žฅ์ด ๋„ˆ๋ฌด ์งง๊ฑฐ๋‚˜ ๊ธธ๋ฉด Edit๋ฅผ ๋ˆŒ๋Ÿฌ ์กฐ์ •ํ•˜์„ธ์š”.
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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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์ด ๋น„๋””์˜ค๋กœ ๋ฐฐ์šธ ์ˆ˜ ์žˆ๋Š” ์˜์–ด ์‹ค๋ ฅ

์„œ๋ฒ„ ๊ด€๋ จ ์ „๋ฌธ ์šฉ์–ด๋ฅผ ์ž์—ฐ์Šค๋Ÿฝ๊ฒŒ ๋“ฃ๊ณ  ๋งํ•˜๋Š” ๋Šฅ๋ ฅ์ด ํ–ฅ์ƒ๋ฉ๋‹ˆ๋‹ค. "ํด๋ผ์ด์–ธํŠธ-์„œ๋ฒ„ ๋ชจ๋“ˆ", "๊ฐ€์ƒ ์„œ๋ฒ„", "RAID ๊ตฌ์„ฑ"๊ณผ ๊ฐ™์€ ๋‹จ์–ด๋“ค์„ ๋ฌธ๋งฅ ์†์—์„œ ์ดํ•ดํ•˜๊ณ , ์˜์–ด๋กœ ์„ค๋ช…ํ•  ์ˆ˜ ์žˆ๋Š” ์‹ค๋ ฅ์„ ๊ธฐ๋ฆ…๋‹ˆ๋‹ค. ๋˜ํ•œ, ์ •๋ณด ์ „๋‹ฌํ˜• ๋ฐœํ™”์˜ ๋ฆฌ๋“ฌ๊ณผ ๊ฐ•์„ธ๋ฅผ ์ตํ˜€, ๋ณต์žกํ•œ ๊ฐœ๋…๋„ ๋ช…ํ™•ํ•˜๊ฒŒ ์ „๋‹ฌํ•˜๋Š” ๋Šฅ๋ ฅ์„ ํ‚ค์šธ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

๋“ฃ๊ณ  ์ฃผ๋ชฉํ•ด์•ผ ํ•  ๋ฐœ์Œ ํŠน์ง•

์˜์–ด์˜ ์—ฐ๊ฒฐ ๋ฐœ์Œ๊ณผ ์ถ•์•ฝํ˜•์„ ์ฃผ์˜ ๊นŠ๊ฒŒ ๋“ฃ์Šต๋‹ˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด, "what is a server"๋Š” /wษ‘หt ษชz ษ™ หˆsษœหrvษ™r/๊ฐ€ ์•„๋‹ˆ๋ผ /wษ‘หtษชz ษ™ หˆsษœหrvษ™r/๋กœ ์—ฐ๊ฒฐ๋ฉ๋‹ˆ๋‹ค. "they're generally"๋Š” /รฐeษชr หˆdส’enrษ™li/๊ฐ€ ์•„๋‹ˆ๋ผ /รฐeษชrหˆdส’enrษ™li/๋กœ ๋ฐœ์Œ๋ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ, "CPU"์™€ "RAM"๊ณผ ๊ฐ™์€ ์•ฝ์–ด๋Š” /siหpiหjuห/์™€ /rรฆm/์œผ๋กœ ๋น ๋ฅด๊ฒŒ ๋ฐœ์Œ๋˜๋ฏ€๋กœ, ์ด๋ฅผ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์žˆ๋Š” ์ฒญ๋ ฅ์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.

์›์–ด๋ฏผ์ฒ˜๋Ÿผ ๋งํ•˜๋Š” ๋ฐฉ๋ฒ•

์œ ํŠœ๋ธŒ ์˜์–ด ๊ณต๋ถ€์—์„œ ์ค‘์š”ํ•œ ์‰๋„์ž‰(shadow speech) ์—ฐ์Šต์„ ํ•ด๋ณด์„ธ์š”. ๋น„๋””์˜ค๋ฅผ ๋ฉˆ์ถ”์ง€ ์•Š๊ณ  ๋”ฐ๋ผ๋งํ•˜๋ฉด์„œ, ๋ฐœํ™”์˜ ๋ฆฌ๋“ฌ๊ณผ ๊ฐ•์„ธ๋ฅผ ๋ชจ๋ฐฉํ•ฉ๋‹ˆ๋‹ค. "Servers can provide various functionalities"์—์„œ "various"๋Š” ๊ฐ•์„ธ๋ฅผ ์ฃผ๊ณ , "functionalities"๋Š” ๋’ท๋ถ€๋ถ„์„ ์•ฝํ•˜๊ฒŒ ๋ฐœ์Œํ•ฉ๋‹ˆ๋‹ค. "Virtual servers use hypervisor to divide"์—์„œ "hypervisor"๋Š” /haษชpษ™rหˆvaษชzษ™r/๋กœ ๋ช…ํ™•ํ•˜๊ฒŒ ๋ฐœ์Œํ•˜๋˜, ๋น ๋ฅด๊ฒŒ ์—ฐ๊ฒฐํ•ฉ๋‹ˆ๋‹ค. ๋˜ํ•œ, ์ •๋ณด๋ฅผ ์ „๋‹ฌํ•  ๋•Œ๋Š” ์–ด์กฐ๋ฅผ ํ‰ํ‰ํ•˜๊ฒŒ ์œ ์ง€ํ•˜๋˜, ์ค‘์š”ํ•œ ์šฉ์–ด์—๋Š” ์•ฝ๊ฐ„์˜ ๊ฐ•์„ธ๋ฅผ ์ฃผ์–ด ์ฒญ์ž์—๊ฒŒ ์ง‘์ค‘์„ ์œ ๋„ํ•ฉ๋‹ˆ๋‹ค. ์ด๋ ‡๊ฒŒ ๋ฐ˜๋ณต์ ์ธ ์‰๋„์ž‰ ์—ฐ์Šต์„ ํ†ตํ•ด, ์ž์—ฐ์Šค๋Ÿฌ์šด ์˜์–ด ๋ฐœํ™” ๋Šฅ๋ ฅ์„ ํ‚ค์šธ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์„œ๋ฒ„ ๊ด€๋ จ ์ฃผ์š” ์šฉ์–ด ์ •๋ฆฌ

  • Physical server: ๋ฌผ๋ฆฌ์ ์ธ ์„œ๋ฒ„๋กœ, ์ „์šฉ CPU์™€ RAM์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.
  • Virtual server: ํ•˜์ดํผ๋ฐ”์ด์ €๋ฅผ ์‚ฌ์šฉํ•ด ๋ฌผ๋ฆฌ์  ์„œ๋ฒ„๋ฅผ ๋‚˜๋ˆˆ ๊ฐ€์ƒ์˜ ์„œ๋ฒ„์ž…๋‹ˆ๋‹ค.
  • RAID configuration: ์—ฌ๋Ÿฌ ๊ฐœ์˜ ํ•˜๋“œ ๋“œ๋ผ์ด๋ธŒ์— ๋ฐ์ดํ„ฐ๋ฅผ ๋ณต์‚ฌํ•ด ์•ˆ์ •์„ฑ์„ ๋†’์ด๋Š” ๊ตฌ์„ฑ์ž…๋‹ˆ๋‹ค.
  • Web server: ์›น์‚ฌ์ดํŠธ๋ฅผ ํ˜ธ์ŠคํŒ…ํ•˜๋Š” ์„œ๋ฒ„๋กœ, HTTP๋‚˜ NGINX ์†Œํ”„ํŠธ์›จ์–ด๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.

์ด ์šฉ์–ด๋“ค์„ ์˜์–ด๋กœ ๋งํ•˜๋ฉด์„œ, ๋ฐœ์Œ๊ณผ ์˜๋ฏธ๋ฅผ ๋™์‹œ์— ๊ธฐ์–ตํ•˜์„ธ์š”. ์‰๋„์ž‰์„ ํ•  ๋•Œ ์ด ์šฉ์–ด๋“ค์„ ํฌํ•จํ•œ ๋ฌธ์žฅ์„ ๋ฐ˜๋ณต็ปƒไน ํ•˜๋ฉด, ์‹ค์ œ ์˜์‚ฌ์†Œํ†ต์—์„œ๋„ ์ž์—ฐ์Šค๋Ÿฝ๊ฒŒ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์‰๋„์ž‰์ด๋ž€? ์˜์–ด ์‹ค๋ ฅ์„ ๋น ๋ฅด๊ฒŒ ํ‚ค์šฐ๋Š” ๊ณผํ•™์  ๋ฐฉ๋ฒ•

์‰๋„์ž‰(Shadowing)์€ ์›๋ž˜ ์ „๋ฌธ ํ†ต์—ญ์‚ฌ ํ›ˆ๋ จ์„ ์œ„ํ•ด ๊ฐœ๋ฐœ๋œ ์–ธ์–ด ํ•™์Šต ๊ธฐ๋ฒ•์œผ๋กœ, ๋‹ค์–ธ์–ด ํ•™์ž์ธ Dr. Alexander Arguelles์— ์˜ํ•ด ๋Œ€์ค‘ํ™”๋œ ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค. ํ•ต์‹ฌ ์›๋ฆฌ๋Š” ๊ฐ„๋‹จํ•˜์ง€๋งŒ ๋งค์šฐ ๊ฐ•๋ ฅํ•ฉ๋‹ˆ๋‹ค: ์›์–ด๋ฏผ์˜ ์˜์–ด๋ฅผ ๋“ค์œผ๋ฉด์„œ 1~2์ดˆ์˜ ์งง์€ ์ง€์—ฐ์œผ๋กœ ์ฆ‰์‹œ ์†Œ๋ฆฌ ๋‚ด์–ด ๋”ฐ๋ผ ๋งํ•˜๋Š” ๊ฒƒโ€”โ€”๋งˆ์น˜ '๊ทธ๋ฆผ์ž(shadow)'์ฒ˜๋Ÿผ ํ™”์ž๋ฅผ ๋”ฐ๋ผ๊ฐ€๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค. ๋ฌธ๋ฒ• ๊ณต๋ถ€๋‚˜ ์ˆ˜๋™์ ์ธ ์ฒญ์ทจ์™€ ๋‹ฌ๋ฆฌ, ์‰๋„์ž‰์€ ๋‡Œ์™€ ์ž… ๊ทผ์œก์ด ๋™์‹œ์— ์‹ค์‹œ๊ฐ„์œผ๋กœ ์˜์–ด๋ฅผ ์ฒ˜๋ฆฌํ•˜๊ณ  ์žฌํ˜„ํ•˜๋„๋ก ํ›ˆ๋ จํ•ฉ๋‹ˆ๋‹ค. ์—ฐ๊ตฌ์— ๋”ฐ๋ฅด๋ฉด ์ด ๋ฐฉ๋ฒ•์€ ๋ฐœ์Œ ์ •ํ™•๋„, ์–ต์–‘, ๋ฆฌ๋“ฌ, ์—ฐ์Œ, ์ฒญ์ทจ๋ ฅ, ๋งํ•˜๊ธฐ ์œ ์ฐฝ์„ฑ์„ ํฌ๊ฒŒ ํ–ฅ์ƒ์‹œํ‚ต๋‹ˆ๋‹ค. IELTS ์Šคํ”ผํ‚น ์ค€๋น„์™€ ์ž์—ฐ์Šค๋Ÿฌ์šด ์˜์–ด ์†Œํ†ต์„ ์›ํ•˜๋Š” ๋ถ„๋“ค์—๊ฒŒ ํŠนํžˆ ํšจ๊ณผ์ ์ž…๋‹ˆ๋‹ค.