"Unlimited disk, unlimited traffic, unlimited databases" still appears on every second hosting site. Technically it isn't a lie, but calling it the truth is a stretch. A physical server has a very specific amount of disk and a finite CPU, so "unlimited" isn't the absence of limits — it's a different way of describing them. Let's find out where they actually sit.
"Unlimited" means the provider doesn't count gigabytes while your site behaves like an ordinary site. The real boundaries live in the fair use policy and technical caps: file count (inodes), concurrent processes, CPU load. You hit those long before the "boundless" space runs out.
Why unlimited plans can't exist
The arithmetic is simple. A physical server holds, say, 2 TB of storage while carrying several hundred accounts. If every one of them genuinely used "unlimited" space, the server would run out on the third customer. The model works because the overwhelming majority of sites occupy a few gigabytes, letting the provider sell the resource with room to spare.
So read "unlimited" as: "we don't count your gigabytes as long as you use the hosting for its intended purpose". The moment your behaviour departs from typical, an email arrives citing a clause in the terms.
Fair use: the clause nobody reads
Every host has an acceptable use policy, and that's what defines your actual rights. Typical wording: no file-sharing or backup storage, a cap on the share of disk used by files unrelated to the website, and the provider's right to throttle an account under "abnormal load".
The key word is "abnormal". It's deliberately vague, and the provider interprets it. In practice complaints go to people storing video archives, serving large files or running heavy scheduled scripts. An ordinary website never comes close to that line.
An "unlimited" plan ends not when the space runs out, but when your site starts bothering its neighbours on the server.
Ihor Jazov, ranking editor
The limits that actually affect your site
These are the numbers to look at instead of the word "unlimited" — they're in the terms of even the most generous plans.
- Inodes — the file count per account, typically 150–500 thousand. A site with a large cache and thumbnails exhausts these faster than disk space
- Concurrent processes — 10 to 40 depending on the plan. Exceed it and visitors get a 508 error
- CPU limit — the share of a core available to the account. This decides how many people the site handles at once
- Database connections — exhaust them and the site shows a connection error
- Large-file delivery speed — often throttled by a separate rule
Compare plans on exactly these parameters. "Unlimited space" with a 10-process cap is worse than "10 GB" with a cap of 40 — the second plan will carry far more concurrent visitors.
Who unlimited actually suits
The model works beautifully for a typical site: a brochure page, a corporate site, a blog, a small store. Such projects rarely exceed a few gigabytes and stay far from any load ceiling. You pay less than on a plan with fixed quotas and never hit the wall.
It doesn't suit you if you plan to serve video or large archives, back up other projects onto the hosting, or keep a photo library of tens of thousands of files. In those cases you'll either breach fair use or run out of inodes.
What to check before buying
Three things that take five minutes and save your nerves. First, find the provider's terms of use page and read the restrictions section — if there isn't one at all, that's a bad sign. Second, find the inode and concurrent-process numbers; if the plan doesn't list them, email support. Third, ask outright what happens when you exceed them: a warning, throttling, or suspension.
The answer to the third question is telling. A decent provider says something like "we'll email you and suggest moving to a higher plan". A bad answer is vague wording — or silence.
When to move to a plan with explicit numbers
If you've already received overage notices, if the site regularly hits 508 errors at peak hours, or if the project is growing predictably — it's time for a plan with stated quotas, or straight to a VPS. There you see your 2 GB of RAM and 2 cores and know exactly what you're working with. That's a more honest model for a loaded project, even without the pretty word on the banner.
We've gathered providers offering unlimited plans with real, readable terms in a separate ranking — with prices, limits and user reviews.
