"Unlimited storage" and "unmetered bandwidth" appear on a great many hosting plans. No host has infinite disks or infinite network capacity, so something must bound it. That something is the acceptable use policy and the account resource limits, and those are the numbers that determine what your site can actually do.

This is not necessarily dishonest. For the overwhelming majority of websites, the effective limits are far above what they will ever use, and "unlimited" is a reasonable shorthand. The problem arises when a site grows into the limits nobody mentioned.

The limits that actually apply

Look in the terms of service or acceptable use policy for these:

Inode limits. An inode is roughly one file or folder. Plans commonly cap the total number, often in the hundreds of thousands. A site with a large media library, extensive caching, or accumulated email can approach this while using a modest amount of actual disk space. Hitting the cap can stop you creating files, and email delivery may fail.

CPU and memory limits. Expressed as a percentage of a core, an amount of memory per process, or "CPU seconds" per period. This is usually what constrains a busy site long before storage does.

Concurrent process and connection limits. How many requests can be handled simultaneously. Exceeding it means visitors see errors or waits during traffic peaks.

Database limits. Number of databases, size per database, and simultaneous connections. Dynamic sites hit these more often than people expect.

Email sending limits. Messages per hour or per day. Relevant if your site sends notifications, order confirmations or newsletters.

Backup retention. How many restore points are kept and for how long, and whether restoring is free or chargeable.

The "normal website use" clause

Almost every unlimited plan restricts storage to files that form part of an active website. This excludes, in most cases:

  • Using the account as a file backup or archive service
  • Storing media not linked from your own site
  • File-sharing or distribution services
  • Streaming large video libraries

This is the clause that makes unlimited storage workable. It is aimed at people using hosting as cheap cloud storage, and it is rarely a problem for an ordinary website.

Unmetered versus unlimited bandwidth

"Unmetered" usually means the host does not bill per gigabyte, not that the connection is unrestricted. The port speed still applies, and the acceptable use policy still governs sustained heavy transfer.

In practice, bandwidth is rarely the binding constraint on shared hosting. Processor and memory limits bite first, because generating pages costs more resources than sending them.

What happens when you exceed a limit

Responses vary, and the sequence usually runs: throttling, then warning emails, then an upgrade request, then suspension. The better hosts warn early and explain what triggered it. Less good ones suspend first.

Worth checking before you sign up: does the host notify you as you approach limits, is there a grace period, and what is the process for getting back online. Support responsiveness matters most at exactly this moment.

How to know where you stand

Most control panels show current resource usage — inodes, memory, CPU, processes — often with a history. Look at it occasionally. If you are regularly touching 80% of any limit, plan an upgrade rather than waiting for the suspension email.

Common ways sites accumulate inodes without realising: cache directories that are never cleared, backup plugins storing copies within the account, old email in webmail accounts, and log files. A periodic clear-out often resolves the problem without an upgrade.

Reading a plan honestly

When comparing hosts, ignore the unlimited claims — they are all making them, so they carry no comparative information. Compare instead on:

  • Stated CPU, memory and process limits
  • Inode caps
  • Number of sites and databases allowed
  • Backup frequency, retention, and whether restores cost extra
  • Whether an SSL certificate is included and renews free
  • Renewal pricing
  • Support hours and channels

A host that publishes specific numbers is generally being more straightforward with you than one that publishes only the word unlimited. Those numbers are what you are actually buying.