---
id: comparisons.emergency-space-or-run-tuhi
url: https://storagestudio.us/faq/comparisons/emergency-space-or-run-tuhi
category: "Comparisons & alternatives"
subcategory: "Choosing the right tool"
question: "My disk is nearly full — should I use Emergency Space or Run Tuhi?"
alt_questions:
  - "Emergency Space vs Run Tuhi"
  - "which Storage Studio button frees space fastest"
  - "disk full which tool should I use in Storage Studio"
  - "Run Tuhi or Emergency Space when out of space"
  - "quick clean vs emergency space Mac"
short_answer: "Emergency Space when you're out of room and need a set amount back, with every step shown first; Run Tuhi for routine, unattended tidying."
tags: ["emergency space", "run tuhi", "disk full"]
related: ["https://storagestudio.us/faq/comparisons/emergency-space-vs-deleting-the-biggest-files", "https://storagestudio.us/faq/comparisons/which-storage-studio-tool-should-i-use"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# My disk is nearly full — should I use Emergency Space or Run Tuhi?

Use **Emergency Space** when you're genuinely out of room and need a specific amount back now; use **Run Tuhi** for routine upkeep.

- **Emergency Space** — you say how much you need, and it builds the smallest, safest set of steps to get there, starting with space your Mac is holding, then rebuildable caches, then moves to your fast drive. You see everything before anything happens, nothing that removes data is ticked for you, and it reports what actually came back.
- **Run Tuhi** — a one-tap tidy-up of steps that are safe to run unattended: clearing caches and clutter, tidying folders your rules match, reclaiming old local backups.

If a low-space warning has appeared, start with Emergency Space. See [Emergency Space](https://storagestudio.us/faq/freeing-space/what-is-emergency-space) and [Run Tuhi](https://storagestudio.us/faq/freeing-space/what-does-run-tuhi-do).