Capacite d'un serveur mutualise : comment bien choisir et pourquoi c'est important pour une exploitation fluide du site
Lorsque vous louez un serveur, vous comparez peut-etre toutes sortes de specifications comme le CPU et la memoire avant de rester bloque sur la 'capacite'. Si vous debutez avec les serveurs mutualises, vous ne savez peut-etre ni quelle capacite il vous faut, ni meme de quel type de capacite il s'agit.
In this article, I take an in-depth look at rental server capacity. Along with points to watch when starting a WordPress blog, I will help you choose the best plan. After reading this article, you should understand rental server capacity and be able to choose a plan with confidence.
Qu'est-ce exactement que la capacite d'un serveur mutualise ? Que stocke-t-elle ?
Put simply, rental server capacity is the amount of space available for storing your website's data. Specifically, it stores the following kinds of data.
- Website files: all files needed to display the site, such as HTML, CSS, JavaScript, images, and videos
- Databases: store dynamic content such as blog posts, user information, and product information
- Email data: if you use email accounts, your sent and received emails and attachments
- Log files: server access logs, error logs, and similar records
- Backup data: backups of your website data
Toutes ces donnees consomment de la capacite serveur. Si vous manquez d'espace, vous risquez de ne plus pouvoir ajouter de contenu, votre site peut ralentir et, dans le pire des cas, tomber en panne.
Trois etapes pour choisir la bonne capacite serveur
Alors, comment choisir la bonne capacite ? Reflechissez-y en suivant les trois etapes ci-dessous.
ETAPE 1 : reflechir au type de site web (pour WordPress)
La capacite necessaire varie enormement selon le type de site web. Si vous lancez un blog WordPress, prenez en compte les points suivants.
- Blog size: whether it is a small personal blog or a large blog run by multiple people.
- Content type: whether it is mainly text or uses many images and videos.
- Number of plugins: many plugins consume capacity.
- Theme weight: depending on the theme you use, it may put pressure on your capacity.
En regle generale, gardez les ordres de grandeur suivants en tete :
- Small blog (mainly text, few images): 5GB to 10GB
- Medium blog (many images, multiple plugins): 10GB to 20GB
- Large blog (including videos, many plugins): 20GB to 50GB or more
ce sont de bonnes valeurs de reference.
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ETAPE 2 : estimer la croissance future
Un site web n'est pas quelque chose que l'on construit puis que l'on oublie. A mesure que vous ajoutez du contenu et que le trafic augmente, la capacite necessaire augmente elle aussi.
Assume what things will look like at least one year from now, and choose capacity with some room to spare. You can add more capacity later, but considering the trouble of changing plans, it is smoother to choose a slightly larger plan from the beginning.
Dans le cas de WordPress, supposez bien que le nombre d'articles, d'images et de videos augmentera avec le temps.
ETAPE 3 : raisonner avec des chiffres concrets
Sur la base des etapes precedentes, raisonnez ensuite avec des chiffres concrets. Par exemple, vous pouvez estimer les choses ainsi.
- Texte pour une page : environ 1 Ko
- Une image : environ 1 Mo (cela peut etre plus pour des images haute resolution)
- Une minute de video : environ 100 Mo (cela varie fortement selon la qualite et le format)
Pour WordPress, il faut aussi tenir compte de la taille des themes et des extensions. Ceux-ci peuvent representer plusieurs dizaines, voire centaines de megabytes.
Avantages et points de vigilance des offres a capacite illimitee (pour WordPress)
Si vous lancez un blog WordPress, une offre a capacite illimitee peut sembler attrayante. Toutefois, comme indique plus haut, il y a aussi des points de vigilance.
- Watch the database size: because WordPress stores posts, settings, and other data in a database, even with unlimited capacity you may still run into database size limits.
- Backup storage: just because capacity is unlimited does not mean you can store unlimited backups. Check the backup storage limit and retention period.
★ What Is a Database? An Essential Management System for WordPress
Problemes graves causes par le manque de capacite serveur : impacts concrets et contre-mesures
1. Vous ne pouvez plus ajouter de contenu
When capacity is full, you can no longer add new content. This is a serious problem that gets in the way of website growth.
- You can no longer upload images or videos: images and videos are important elements that make a website attractive, but once capacity runs short, they can no longer be uploaded. In WordPress, you will get errors when trying to upload files to the media library, and you will no longer be able to add new images or videos.
- You can no longer create or update posts and pages: text content also uses storage space. When capacity runs short, you may no longer be able to create new posts or pages, or even update existing ones.
- You can no longer register products (in the case of an e-commerce site): on an e-commerce site, product information and images are the lifeblood of the business. Lack of capacity can prevent you from adding new products or updating existing ones, seriously affecting the business.
Countermeasure: move to a larger plan, delete unnecessary files, and optimize images (for example, through compression).
2. Affichage du site plus lent : experience utilisateur degradee
Lack of capacity can also lead to slower website display speed. If display speed becomes slow, the user experience deteriorates and SEO is negatively affected as well.
- Increased server load: when capacity becomes tight, the load on the server increases and processing speed drops. As a result, page loading time gets longer, which means making users wait.
- Performance drops during traffic spikes: if the server is already short on capacity during periods of concentrated traffic, it can become overloaded, making the website extremely slow or, in the worst case, causing it to go down.
- Negative effect on SEO: search engines such as Google take page loading speed into account as a ranking factor. A slow website may drop in search rankings, which can lead to fewer visitors.
Countermeasure: use measures such as cache plugins, image optimization, and CDNs to improve display speed. You may also need to consider switching to a server plan that matches your traffic volume.
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3. L'envoi et la reception d'e-mails s'arretent : la communication professionnelle est perturbee
Email data also consumes server capacity. When capacity runs short, you may no longer be able to send or receive email, which interferes with business communication.
- You can no longer receive email: when the inbox reaches its capacity limit, new email can no longer be received. You may miss important communication or fail to respond to customer inquiries.
- You can no longer send email: sent mail and drafts also consume capacity. Once capacity runs short, you may no longer be able to send email, which can lead to lost business opportunities.
Countermeasure: delete unnecessary emails, save email data locally, and consider using an external mail service.
4. Indisponibilite du site : l'activite s'arrete
If lack of capacity becomes serious, in the worst case the website may go down and become inaccessible. This means business operations are effectively stopped and can lead to major losses.
- Excessive load on the server: traffic concentration while the server is already short on capacity can put excessive load on the server and cause system crashes.
- Recovery may take time: if the server goes down, recovery work may take time and the website may remain inaccessible for a long period.
Countermeasure: thoroughly implement measures that ensure stable operation, such as monitoring server resources, analyzing access logs, and choosing an appropriate server plan. Regular backups are also important.
Le manque de capacite affecte serieusement l'exploitation du site. Pour eviter ces problemes, il est important de choisir une offre avec une capacite adaptee et de surveiller regulierement l'utilisation de l'espace. Il faut aussi prevoir a l'avance les actions a mener si la capacite devient insuffisante.
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Serveurs mutualises recommandes selon la capacite
30GB: Little Server
“Little Server” is a low-cost rental server. Excluding free servers, it is one of the lowest-priced rental servers for personal use. Even so, it uses NVMe SSDs to improve speed.
Aucun frais initial jusqu'au 30 septembre 2025, 20 % de reduction sur les frais serveur de l'offre Little Plan et essai gratuit de 20 jours
| Server type | Shared server |
| Display speed (TTFB) | 200ms |
| Recommended plan and contract term | Mini, 12 months |
| Trial / refund guarantee | 20-day free trial |
| Monthly fee (12-month contract) | 165 yen |
| Initial administrative fee | 920 yen |
| Free domain | None |
| Support | Email (business hours not disclosed) |
| Uptime | Not disclosed |
| Server capacity | 20GB |
| Number of databases | 3 |
| Security measures | IMP |
| SSL | Free SSL, dedicated SSL (Little Plan and above) |
| Backup / restore | 7 days of automatic backups free of charge, restore free of charge |
| Number of email accounts | Unlimited |
| Email security measures | Spam filter |
| Server / website migration service | None |
| WordPress pre-installation | Yes |
| CDN | None |
*Pour l'offre Mini
If you want to keep the price down while securing the minimum necessary capacity, Little Server is recommended. Even the lowest-priced plan gives you 30GB. Even if you upgrade, the monthly fee stays within a few hundred yen, so if you start worrying about lack of capacity, upgrade proactively.
★ Little Server Reviews and How to Start WordPress on an Affordable Hosting Service
300GB: ConoHa WING
“ConoHa WING” is a high-speed server from GMO Internet Group, whose number of users has been rapidly increasing, and it is a service our company also uses. Because WordPress comes pre-installed when you sign up for the server, anyone can get started easily. It strikes a good balance between cost and performance, and we use it as well.
Jusqu'a 53 % de reduction sur les frais serveur jusqu'au 5 aout 2025, deux domaines gratuits a vie et premier mois offert
| Server type | Shared server |
| Display speed (TTFB) | 160ms |
| Recommended plan and contract term | Basic, 12 months |
| Trial / refund guarantee | First month free |
| Monthly fee (12-month contract) | 971 yen |
| Initial administrative fee | Free |
| Free domains | Two free forever |
| Support | Phone, email, and chat (weekdays 10:00-18:00) |
| Uptime | 99.99% guaranteed |
| Server capacity | 300GB |
| Number of databases | Unlimited |
| Security measures | WAF / directory access restrictions / IP access restrictions / vulnerability diagnosis (Net de Diagnosis) / spam comment and trackback restrictions / overseas comment and trackback restrictions / overseas access restrictions |
| SSL | Free SSL / Alpha SSL / Quick Authentication SSL / Company Authentication SSL / EV SSSL |
| Backup / restore | 14 days of automatic backups / restore free of charge |
| Number of email accounts | Unlimited |
| Email security measures | Virus checking / spam filters |
| Server / website migration service | WordPress migration service from 7,678 yen Free migration tool available |
| WordPress pre-installation | Yes |
| CDN | None |
If you want enough capacity even as an individual, choose ConoHa WING. Even the lowest-priced plan gives you 300GB, so running WordPress is no problem at all.
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600GB: Sakura Rental Server
“Sakura Rental Server” is a shared server from Sakura Internet Inc. The company also offers managed servers. It has a good balance of performance, service, and price, so it is recommended for any corporation. Because it includes a certain amount of free CDN use depending on the plan, it can provide comfortable communications.
14-day free trial
| Server type | Shared server |
| Display speed (TTFB) | 440ms |
| Recommended plan and contract term | Standard, 12 months |
| Trial / refund guarantee | 14-day free trial |
| Monthly fee (12-month contract) | 550 yen |
| Initial administrative fee | Free |
| Free domain | None |
| Support | Business hours: 10:00-18:00 Phone callback reservations, chat, and email (reply the same day or the next business day) |
| Uptime | 99.99% |
| Server capacity | 300GB |
| Number of databases | Unlimited |
| Security measures | Website defacement notifications (paid), WAF, overseas IP address filters, prevention of unauthorized relaying, encryption, |
| SSL | Free shared SSL, dedicated SSL |
| Backup / restore | Eight generations of backups free of charge, restore free of charge |
| Number of email accounts | Unlimited |
| Email security measures | POP3, IMAP4, virus checking, simple spam filter, advanced spam filter |
| WordPress pre-installation | None |
| Server / website migration service | None |
| CDN | 100GB per month free |
Si vous etes une entreprise, disposer de plus de capacite serveur apporte de la tranquillite. Sakura Rental Server propose une grande capacite, avec 300 Go sur l'offre Standard et 600 Go sur l'offre Business.
Capacité illimitée : mixhost
“ mixhost” is a high-speed rental server from Az Pocket Co., Ltd., headquartered in Osaka. It can deliver content from servers located in San Jose on the west coast of the United States. Although it is an overseas server, the company is based in Japan, so you still get complete Japanese-language support.
25 % de réduction sur le contrat initial jusqu'au 10 septembre 2025, un an offert pour 500 Go de stockage cloud et une garantie de remboursement de 30 jours
| Server type | Shared server / dedicated cloud server |
| Display speed (TTFB) | 150ms |
| Recommended plan and contract term | Shared server Light, 12 months |
| Trial / refund guarantee | 30-day money-back guarantee |
| Monthly fee (12-month contract) | 594 yen |
| Initial administrative fee | Free |
| Free domain | One free forever |
| Support | |
| Uptime | 99.99% guaranteed |
| Server capacity | 100GB |
| Number of databases | Unlimited |
| Security measures | WAF / DDo attack protection / malware detection and removal |
| SSL | Free dedicated SSL |
| Backup / restore | Automatic backups for 14 days on the Standard plan and above |
| Number of email accounts | Unlimited |
| Email security measures | — |
| WordPress pre-installation | Yes |
| Server / website migration service | 10,890 yen |
| CDN | None |
| Data center | San Jose, U.S. West Coast |
If you want to use a server with unlimited capacity, choose mixhost. Not only is the capacity unlimited, but the data transfer is also unlimited, so it offers excellent scalability.
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Résumé : choisissez la bonne capacité et faites fonctionner votre blog WordPress sans accroc
Rental server capacity has a major effect on the stability and growth of a website. Use the steps introduced in this article to choose the capacity that best fits your WordPress blog and achieve smooth blog operation.
Si nécessaire, il est également judicieux de consulter l'administrateur du serveur. Même lorsque vous choisissez une offre à capacité illimitée, il est important de prendre cette décision seulement après avoir bien compris à la fois les avantages et les points à surveiller.