Overview

The following table identifies individual recommended hard drive models that have been tested and verified compatible with the UniFi Dream Machine PRO (UDM-PRO) and Cloud Key Gen2 Plus devices, by Ubiquiti engineers, as well as drives that are confirmed not compatible.

Table of Contents

1. Introduction
2. UniFi Dream Machine Pro
   
   • Recommended Hard Drives
   • Incompatible Hard Drives
3. Cloud Key Gen2 Plus
   • Recommended Hard Drives
   • Incompatible Hard Drives

Introduction

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This document is by no means an exhaustive list. Most SATA HDDs should be compatible, given that they fit in their respective trays: 2.5" for the Cloud Key Gen2 Plus, 2.5" or 3.5" for the UDM-Pro.

It is strongly advised to choose a hard drive model designed for continuous load, often marketed as NAS or Surveillance Grade drives.  

If you have questions about a particular drive, please search for the drive model on our Community to find other users’ past experiences or start a new related thread if none are found. Please note that support will not be able to provide further recommendations or options beyond referring to this list.

These tables may be expanded in the future as more drives are tested.  Drives are sorted alphabetically by model number.

UniFi Dream Machine Pro

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The UDM-Pro requires the HDD to have one partition of ext4 filesystem format. If the HDD isn't pre-formatted when inserted, the UDM-Pro will format it to be one partition of ext4 filesystem.

Compatible Hard Drives

Incompatible Hard Drives

Cloud Key Gen2 Plus

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Compatible Hard Drives

Incompatible Hard Drives

* The Cloud Key Gen2 Plus does not support Hard Drives that require a 12V supply in addition to the default 5V supply.