---
id: external-drives.can-i-use-my-time-machine-drive-as-the-fast-drive
url: https://storagestudio.us/faq/external-drives/can-i-use-my-time-machine-drive-as-the-fast-drive
category: "External drives"
subcategory: "Choosing a drive"
question: "Can I use my Time Machine backup drive as the fast drive?"
alt_questions:
  - "Can Storage Studio share a drive with Time Machine?"
  - "Why doesn't my Time Machine disk appear in the drive list?"
  - "Use backup drive for moving apps too"
  - "time machine drive storage studio"
  - "Can I put moved apps on my backup disk?"
  - "One drive for Time Machine and Storage Studio"
short_answer: "Not the backup volume — Storage Studio hides Time Machine volumes from its drive list. Keep them separate: the fast drive holds the only copy of what you moved, so its backup should be on a different physical drive."
tags: ["time machine", "backup", "external drive"]
related: ["https://storagestudio.us/faq/external-drives/what-kind-of-external-drive-should-i-use-with-storage-studio", "https://storagestudio.us/faq/external-drives/can-i-use-a-spinning-hard-drive-as-my-fast-drive", "https://storagestudio.us/faq/external-drives/how-big-should-my-external-drive-be"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Can I use my Time Machine backup drive as the fast drive?

Not the backup volume itself. Storage Studio hides Time Machine backup volumes and snapshots from the drive list on purpose — they're managed by macOS and aren't a safe place to run apps from.

It's also better practice to keep them apart: your fast drive holds the *only* copy of the things you moved there, so it should itself be backed up, and the backup shouldn't live on the same physical drive. If that drive fails, both would be lost together.

If you only have one large drive, you can create a separate APFS volume on it in Disk Utility for Storage Studio — but a second drive for backups is the safer arrangement.