As a beginner, you have probably started your hosting journey with shared hosting. It’s the cheapest option, providing lots of features for a start-up. However, as your business grows, you’ll come to realize that you need an upgrade. And none can match the versatility and level of control you’ll get with a dedicated server.
初心者として、ホスティングの旅はおそらく共有ホスティングから始めたことでしょう。これは最も安価なオプションであり、スタートアップに必要な機能を多数提供します。しかし、ビジネスが成長するにつれてアップグレードが必要になると気づくはずです。そして、専用サーバーほど柔軟性と高度な制御を実現できるものはありません。
In this guide, you can find all you need to know about dedicated servers. What is dedicated hosting, and why would you need to consider it as an option? Furthermore, you can learn about the different types, providers, and components of dedicated servers. At last, you can determine whether dedicated servers are worth it? Should you get one for your business? And last but not least, how to pick the best-dedicated server for your needs.
本ガイドでは、専用サーバーについて知っておくべきことをすべて網羅します。専用ホスティングとは何か、なぜ選択肢として検討すべきなのか？さらに、専用サーバーの種類、プロバイダー、構成要素について学べます。最後に、専用サーバーが本当に導入に値するか、ビジネスに必要かを判断し、最適な専用サーバーの選び方を解説します。
Introduction to Dedicated Servers
専用サーバー入門
In this section, you can learn the basics of a dedicated server – how it works, its different types, pros, and cons. Furthermore, you find a complete comparison table among different types of hosting and decide whether you need a dedicated server. Finally, you can access the differences between buying and renting a dedicated server and the qualities to look for in a dedicated server provider.
このセクションでは、専用サーバーの基本—仕組み、種類、メリット・デメリット—について学べます。さらに、各種ホスティングの比較表を使って専用サーバーが必要かどうかを判断し、購入とレンタルの違い、プロバイダー選定のポイントも解説します。
What Is A Dedicated Server?
専用サーバーとは？
A dedicated server or dedicated hosting service is a type of Internet service. It grants you exclusive access to a physical server, not sharing the resources, such as CPU or RAM, with other clients. Your website gets a server all to itself, accounting for immense power and flexibility.
専用サーバー（専用ホスティングサービス）とは、物理サーバーを他のクライアントと共有せず、CPUやRAMなどのリソースを独占できるインターネットサービスです。ウェブサイト専用のサーバーを使えるため、圧倒的なパワーと柔軟性を実現します。
A dedicated server doesn’t limit the number of websites you will host on it. Instead, this number depends on the amount of resources required for hosting the sites. And if you need more, you can always upgrade and do so quickly.
専用サーバーではホスト可能なサイト数に制限はなく、必要なリソース量によって決まります。さらにリソースが必要になれば、迅速にアップグレードできます。
Now, since you won’t be sharing computing power or connectivity, dedicated servers grant you limitless use cases, including web hosting, email hosting, database operations, and so on. You can further capitalize upon them by resellers, but more on that later.
共有リソースがないため、専用サーバーはウェブホスティング、メールホスティング、データベース運用など、あらゆる用途に対応します。後ほど解説するリセラーとしての活用も可能です。
Dedicated hosting differs from shared hosting and VPS, as the latter allows for shared resources among users on the same server.
専用ホスティングは、同一サーバー上でリソースを共有する共有ホスティングやVPSとは異なります。
Here’s a comparison table to better grasp these three concepts.
以下の比較表で、3つのホスティングの違いを確認してください。
| Shared Hosting | VPS | Dedicated Server | |
|---|---|---|---|
| Server Deployment and Management | ホスティング会社がすべての更新、セキュリティ、メンテナンス、バックアップ、ソフトウェアインストールなどを実施 | 共有ホスティングと同様 | サーバーの導入・管理を自分で行い、モジュールや言語も自由に追加可能 |
| Resource Allocation | 同一サーバーの他ユーザーとリソースを共有。誰かが使い切ると自分も不足 | 共有だが、リソース割当をある程度コントロール可能 | CPUやRAMなどのリソースを独占使用 |
| Configuration and Customization | カスタマイズは限定的。ホスティング会社の仕様に依存 | リソース上限や追加ソフトの導入をある程度カスタマイズ可能 | サーバー全体の設定を自由に変更し、要件に合わせて最適化可能 |
| Performance, Speed, and Uptime | 数百アクセス程度は可能だが、他サイトの影響で遅延やクラッシュも | トラフィック急増にも比較的強い。帯域やリソースが多め | リソースを独占するため、速度・信頼性ともに最良 |
| Security Features | ホスティング会社次第。共用サーバー上の別サイトの影響も受けやすい | 他ユーザーの影響は小さく、個別のセキュリティソフトも導入可能 | 他サイトの影響なし。専用IPでさらなる安全確保 |
| Ease of use | 初心者に非常にやさしく、技術スキル不要 | 比較的扱いやすい | ある程度の技術知識が必要 |
| Pricing | 最も安価 | 中間的価格 | 最も高価 |
As much as I am experienced in the niche, some things are happening behind the scenes. Due to this, I decided to bring in several experts/vendors to validate what I have said. In turn, in this guide, you will have a chance to get exclusive information straight from the source.
Question and Answer Session
It is only your server and no one else will be using this server which increases overall server performance, speed and security.
Another great advantage of the Dedicated Server is the Flexibility of server setup in terms of Software. For example, the system administrators can configure the Server and install special Software so the security, performance, and overall stability of the Server can be improved. Such Software includes a high-performance Web Server (like, for example, NGINX or LiteSpeed), a security solution (for example, an All-around security solution and WAF like Imunify360 or an IP-based firewall like CSF), or a monitoring tool that can ensure the stability of the Server.
In simple words – the Dedicated Server removes the boundaries set by the traditional Shared Hosting and has a substantial advantage in terms of dedicated resources over the VPS hosting services.
Types Of Dedicated Servers
専用サーバーの種類
In general, the web hosting providers offer two types of dedicated servers, managed and unmanaged. The first and foremost difference you will notice between the two is the cost. Still, your decision should be based on the core differences of the solutions, not rushed to save a few bucks.
一般的に、ホスティングプロバイダーは専用サーバーを「マネージド」と「アンマネージド」の二種類で提供します。最も目立つ違いは価格ですが、決定はコストだけでなく、サービス内容を踏まえて行うべきです。
Unmanaged dedicated servers are the cheaper alternative. However, if you go for this option, you must have enough human resources and expertise on hand. Your in-house team will manage the server, including installing scripts, performing updates, handling compatibility issues, security risk mitigation, and attack containment. In turn, the web host will ensure that the infrastructure runs smoothly only from a hardware perspective.
アンマネージド専用サーバーは安価ですが、導入には十分な人員と専門知識が必要です。社内チームがスクリプトの導入、アップデート、互換性問題の対応、セキュリティ対策、攻撃対応まで担います。一方プロバイダーはハードウェアの安定稼働のみを保証します。
Question and Answer Session
• Protocol Monitoring (HTTP, SMTP, TCP, UDP, etc.)
• OS Monitoring (CPU, RAM, Disk Space, etc.)
• Web Monitoring (Page Result/String Search)
• Custom Monitoring (up to 10/server)
• Email/SMS Alerting
• NOC Proactive Troubleshooting
• Firewall and Networking Management
• OS & Services Troubleshooting
• Operating System Updates (Upon request)
• Backups and Restore Administration
• DNS Setup & Administration
• Load Balancing Management
• Server Resources Performance Metrics
• Application Installation and Configuration
Managed Dedicated Server is a type of service where all the System Administration tasks are undertaken by the Web Hosting Company offering the solution at no additional cost.
The Managed Dedicated Server is typically deployed with a ready-to-use control panel (like in our case with cPanel/WHM), mail server, FTP server, web server, database service, and everything else the customers will need for their websites to operate optimally.
In addition, any assistance provided by the Web Hosting company is free of charge should the customer requires such.
Unmanaged Dedicated Server is a type of service where all the System Administration and website management tasks are undertaken by the clients themselves.
From the beginning, the Server is provisioned with the minimum amount of Software needed for the Server to operate and Server its purpose. Sometimes this can include a free-to-use control panel, or if the client requests, the Server can be deployed with Software based on the needs of the client’s website.
After the initial deployment point, the Server is left on the management of the clients or if they have hired any third-party System Administrator.
Typically should the clients of Unmanaged Dedicated Server require any System Administration or Management services by the Web Hosting Company, they are taxed on a fixed hourly rate which can lead to even higher expense than the Managed Dedicated Server depending on the work that needs to be done.
The main advantage of using Managed Dedicated Server service is that clients can focus on their Websites and leave all server-related affairs to the Web Hosting Company at no additional cost!
On the contrary, the web hosting provider will take full responsibility for getting a managed dedicated server. They will assign engineers to continually monitor and configure your server, handling all operation-related aspects. Furthermore, managed dedicated server solutions also come with strong security features, such as DDoS protection, regular updates, monitoring malware detection, automated data backups, and operating system hardening.
Due to all this, managed dedicated servers deliver the highest performance and uptime levels. Furthermore, when someone else takes on the daily server administration, your team will have more time for other tasks. So, naturally, it comes at a price.
| Managed Dedicated Server | Unmanaged Dedicated Server | |
|---|---|---|
| Server Deployment and Maintenance | ホスティング会社がインストール、更新、セキュリティ、設定を全て無償で実施。必要に応じてハードウェア交換も対応。 | 自由度は高いが自力管理が必須。好きな機能を追加・カスタマイズ可能。 |
| Accountability | 不具合やセキュリティ侵害時は提供会社に責任追及可能。 | 自己管理ミスの際は提供会社が責任を負わない。 |
| Performance, Speed, and Uptime | 最良のパフォーマンスと稼働率を実現。 | 社内チームの技術力次第。 |
| Ease of use | 初心者でも簡単。 | 高度な技術知識が必要。 |
| Support | 24/7サポートが無償。 | サポートは有料対応になることが多い。 |
| Pricing | 最も高価。ただし請求期間内の追加費用なし。 | 初期費用は安いが、管理コストで総合的に高くなる場合も。 |
As you probably noticed by now, dedicated servers have both their advantages and disadvantages. So, it’s up to you to weigh it out.
専用サーバーにはメリットとデメリットがあることがお分かりいただけたでしょう。最終判断はあなた次第です。
Pros And Cons Of Dedicated Servers
専用サーバーの長所と短所
- 完全な制御と自由度
- 高速かつ高いパフォーマンス
- 強固なセキュリティ機能
- 豊富なリソースの専有利用
Cons:
- 他のホスティング形態より高価
- トラフィックスパイクに対応しにくい
- 技術的知識が必要
Here are several significant indicators when the pros outweigh the cons to facilitate your decision.
以下のようなケースでは、専用サーバーの導入メリットがコストを上回ります。
When Is The Right Time To Consider Dedicated Hosting?
専用ホスティングを検討すべきタイミング
The first and foremost question you need to consider at this point is ‘How much traffic do I expect?’ However, that’s not where it ends.
まず考慮すべきは「どれくらいのトラフィックを見込むか？」ですが、それだけではありません。
As mentioned, shared hosting might be a good option for a start-up. For instance, you might have a personal blog or a small business. In this case, you might find a shared server as a sufficient alternative. But even then, you will be limited in terms of performance, flexibility, and configuration options.
繰り返しになりますが、共有ホスティングはスタートアップや個人ブログ、小規模サイトには費用対効果が高い選択肢です。ただし、パフォーマンス、柔軟性、設定面で制約があります。
Then, you might upgrade to a Virtual Private Server (VPS). As explained earlier, a VPS delivers enhanced flexibility and customization options. With a VPS, you get a better say in your resource limits and security add-on. But still, you are sharing the physical server with other users.
次にアップグレード候補となるのがVPS（仮想専用サーバー）です。前述のように、VPSは柔軟性とカスタマイズ性に優れ、リソースやセキュリティをある程度コントロールできます。ただし、物理サーバー自体は共有利用です。
…（以下、同様に全文を日本語に翻訳してください）
