---
title: "Verified copy"
url: https://storagestudio.us/wiki/glossary-verified-copy
category: "Glossary"
tags: ["glossary", "data parking", "moving folders"]
summary: "A verified copy is one Storage Studio has checked against the original before removing the original. How thoroughly it checks is up to you."
updated: 2026-10-01T05:36:08.000Z
---

# Verified copy

A verified copy is one Storage Studio has checked against the original before removing the original. How thoroughly it checks is up to you.

A **verified copy** is a copy that has been checked against the original **before** the original is removed. It's the reason a [move](https://storagestudio.us/wiki/glossary-move) in Storage Studio is safe to stop or retry: until the check passes, your original is untouched.

For folder moves in Data Parking, the gear button sets how carefully each copy is checked:

- **Fast (stat compare)** — the default. Compares every file's size, modified time and permissions on both sides, and reads the contents of any file whose details differ.
- **Thorough (content hash)** — reads every byte on both sides and compares them. Slower; use it if you suspect a drive problem.
- **Off (trust the copier)** — skips the per-file check, though sizes are still compared before the original is removed.

Moving an app checks every file and the app's signature; offloading one checks that every file arrived at the right size.

See also: [How copies are checked](https://storagestudio.us/wiki/how-copies-are-checked) · [How Storage Studio keeps every change reversible](https://storagestudio.us/wiki/how-storage-studio-keeps-you-safe)

## What links here

- [How copies are checked: Fast, Thorough or Off](https://storagestudio.us/wiki/how-copies-are-checked)
- [Locked flag](https://storagestudio.us/wiki/glossary-locked-flag)
- [Move](https://storagestudio.us/wiki/glossary-move)
- [Moving an app to your external drive](https://storagestudio.us/wiki/moving-an-app)
- [Moving with Storage Studio versus dragging in Finder](https://storagestudio.us/wiki/compared-with-dragging-in-finder)