The Smart Device Compare comparison

Ubiquiti UNAS 4 vs Ubiquiti UNAS Pro 8

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Ubiquiti UNAS 4 and Ubiquiti UNAS Pro 8

A summary of selected recorded differences between these nas. Check the full specification table below for details and conditions.

Specifications to check side by side

Capacity (memory): Ubiquiti UNAS 4 — 4 GB; Ubiquiti UNAS Pro 8 — 16 GB.
Maximum Capacity (memory): Ubiquiti UNAS 4 — 4 GB (Soldered, not user-expandable); Ubiquiti UNAS Pro 8 — 16 GB.
10 Gbe Ports (network): Ubiquiti UNAS 4 — 0; Ubiquiti UNAS Pro 8 — 1.
2 5 Gbe Ports (network): Ubiquiti UNAS 4 — 1; Ubiquiti UNAS Pro 8 — 0.

Information still to confirm

17 of 53 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · Ubiquiti

Ubiquiti UNAS 4

Last updated October 2026

View full device profile

Option 2 · Ubiquiti

Ubiquiti UNAS Pro 8

Last updated September 2026

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

9differences with recorded values for every device

17rows with missing or unspecified information

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

Differences onlyMy priorities (0)

Showing 53 of 53 rows. “Not recorded” does not mean “No”.

Reading layout

Apps

Ai Photo Recognition

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Docker

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Operating System

Ubiquiti UNAS 4: UniFi Drive
Ubiquiti UNAS Pro 8: UniFi Drive

Plex Media Server

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Surveillance App

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Virtual Machines

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Backup

Cloud Sync Backup

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes

Endpoint Backup

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Usb Copy

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Features

Scheduled Power On Off

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Ups Support

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

File Services

Iscsi

Ubiquiti UNAS 4: No
Catalog note
Only SMB and NFS are listed as supported file protocols
Ubiquiti UNAS Pro 8: No
Catalog note
Only SMB and NFS are listed as supported file protocols

Nfs

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes
Catalog note
Supported file protocols: SMB and NFS

Rsync

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes

Memory

Capacity

Ubiquiti UNAS 4: 4 GB
Ubiquiti UNAS Pro 8: 16 GB

Ecc

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Maximum Capacity

Ubiquiti UNAS 4: 4 GB
Catalog note
Soldered, not user-expandable
Ubiquiti UNAS Pro 8: 16 GB

Type

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Network

1 Gbe Ports

Ubiquiti UNAS 4: 0
Ubiquiti UNAS Pro 8: 0

10 Gbe Ports

Ubiquiti UNAS 4: 0
Ubiquiti UNAS Pro 8: 1

2 5 Gbe Ports

Ubiquiti UNAS 4: 1
Ubiquiti UNAS Pro 8: 0

Link Aggregation

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Sfp Plus Ports

Ubiquiti UNAS 4: 0
Ubiquiti UNAS Pro 8: 2

Wake On Lan

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Ports

Hdmi Output

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Sd Card Slot

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Usb C Port

Ubiquiti UNAS 4: YES (5 Gbps)
Ubiquiti UNAS Pro 8: No

Usb Ports

Ubiquiti UNAS 4: 0
Ubiquiti UNAS Pro 8: 0

Usb4 Thunderbolt

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Power

Noise Level

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Power Consumption

Ubiquiti UNAS 4: 90W
Catalog note
Max. power consumption 90 W, of which 80 W is the drive power budget
Ubiquiti UNAS Pro 8: 250W

Processor

Architecture

Ubiquiti UNAS 4: ARM
Ubiquiti UNAS Pro 8: ARM

Cores

Ubiquiti UNAS 4: 4
Ubiquiti UNAS Pro 8: 4

Hardware Encryption

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Hardware Transcoding

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Model

Ubiquiti UNAS 4: ARM Cortex-A55 quad-core
Ubiquiti UNAS Pro 8: ARM Cortex-A57 quad-core

Npu

Ubiquiti UNAS 4: Not applicable / unspecified
Ubiquiti UNAS Pro 8: Not applicable / unspecified

Raid

Btrfs

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Hybrid Raid

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Raid 5

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes

Raid 6

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes

Snapshots

Ubiquiti UNAS 4: Yes
Ubiquiti UNAS Pro 8: Yes

Zfs

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Remote Access

Ddns

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Remote Access Service

Ubiquiti UNAS 4: YES (UniFi Cloud)
Ubiquiti UNAS Pro 8: YES (UniFi Cloud)

Ssh Access

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Vpn Server

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Storage

Expansion Unit

Ubiquiti UNAS 4: No
Ubiquiti UNAS Pro 8: No

Hot Swappable

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Yes
Catalog note
Hot spare support and hot-swappable power modules

M 2 Nvme Slots

Ubiquiti UNAS 4

Manufacturer source

Two M.2 NVMe slots are provided for SSD caching.

Ubiquiti UNAS 4 manufacturer product page →

Source section: Model overview
Model: Ubiquiti UNAS 4
Region: US Ubiquiti store
Firmware: Not specified by this source
Checked: 2026-10-04

Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Ubiquiti UNAS Pro 8

Manufacturer source

Two M.2 NVMe slots are provided for SSD caching.

Ubiquiti UNAS Pro 8 manufacturer product page →

Source section: Model overview
Model: Ubiquiti UNAS Pro 8
Region: US Ubiquiti store
Firmware: Not specified by this source
Checked: 2026-10-04

Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support.

Document check only; not a hands-on test or verification of every regional or firmware variant.

M 2 Storage Pool

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Max Raw Capacity

Ubiquiti UNAS 4: Not recorded
Ubiquiti UNAS Pro 8: Not recorded

Total Bays

Ubiquiti UNAS 4

Manufacturer source

The chassis has 4 SATA drive bays for 2.5-inch or 3.5-inch drives.

Ubiquiti UNAS 4 manufacturer product page →

Source section: Model overview
Model: Ubiquiti UNAS 4
Region: US Ubiquiti store
Firmware: Not specified by this source
Checked: 2026-10-04

Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Ubiquiti UNAS Pro 8

Manufacturer source

The chassis has 8 SATA drive bays for 2.5-inch or 3.5-inch drives.

Ubiquiti UNAS Pro 8 manufacturer product page →

Source section: Model overview
Model: Ubiquiti UNAS Pro 8
Region: US Ubiquiti store
Firmware: Not specified by this source
Checked: 2026-10-04

Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Specifications for Ubiquiti UNAS 4 versus Ubiquiti UNAS Pro 8
Specification	Ubiquiti UNAS 4	Ubiquiti UNAS Pro 8
Apps
Ai Photo Recognition	No	No
Docker	No	No
Operating System	UniFi Drive	UniFi Drive
Plex Media Server	No	No
Surveillance App	No	No
Virtual Machines	No	No
Backup
Cloud Sync Backup	Yes	Yes
Endpoint Backup	Not recorded	Not recorded
Usb Copy	Not recorded	Not recorded
Features
Scheduled Power On Off	Not recorded	Not recorded
Ups Support	Not recorded	Not recorded
File Services
Iscsi	No Catalog note Only SMB and NFS are listed as supported file protocols	No Catalog note Only SMB and NFS are listed as supported file protocols
Nfs	Yes	Yes Catalog note Supported file protocols: SMB and NFS
Rsync	Yes	Yes
Memory
Capacity	4 GB	16 GB
Ecc	No	No
Maximum Capacity	4 GB Catalog note Soldered, not user-expandable	16 GB
Type	Not recorded	Not recorded
Network
1 Gbe Ports	0	0
10 Gbe Ports	0	1
2 5 Gbe Ports	1	0
Link Aggregation	Not recorded	Not recorded
Sfp Plus Ports	0	2
Wake On Lan	Not recorded	Not recorded
Ports
Hdmi Output	No	No
Sd Card Slot	No	No
Usb C Port	YES (5 Gbps)	No
Usb Ports	0	0
Usb4 Thunderbolt	No	No
Power
Noise Level	Not recorded	Not recorded
Power Consumption	90W Catalog note Max. power consumption 90 W, of which 80 W is the drive power budget	250W
Processor
Architecture	ARM	ARM
Cores	4	4
Hardware Encryption	Not recorded	Not recorded
Hardware Transcoding	No	No
Model	ARM Cortex-A55 quad-core	ARM Cortex-A57 quad-core
Npu	Not applicable / unspecified	Not applicable / unspecified
Raid
Btrfs	Not recorded	Not recorded
Hybrid Raid	No	No
Raid 5	Yes	Yes
Raid 6	Yes	Yes
Snapshots	Yes	Yes
Zfs	No	No
Remote Access
Ddns	Not recorded	Not recorded
Remote Access Service	YES (UniFi Cloud)	YES (UniFi Cloud)
Ssh Access	Not recorded	Not recorded
Vpn Server	Not recorded	Not recorded
Storage
Expansion Unit	No	No
Hot Swappable	Not recorded	Yes Catalog note Hot spare support and hot-swappable power modules
M 2 Nvme Slots	2 Manufacturer source Two M.2 NVMe slots are provided for SSD caching. Ubiquiti UNAS 4 manufacturer product page → Source section Model overview Model Ubiquiti UNAS 4 Region US Ubiquiti store Firmware Not specified by this source Checked 2026-10-04 Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support. Document check only; not a hands-on test or verification of every regional or firmware variant.	2 Manufacturer source Two M.2 NVMe slots are provided for SSD caching. Ubiquiti UNAS Pro 8 manufacturer product page → Source section Model overview Model Ubiquiti UNAS Pro 8 Region US Ubiquiti store Firmware Not specified by this source Checked 2026-10-04 Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support. Document check only; not a hands-on test or verification of every regional or firmware variant.
M 2 Storage Pool	Not recorded	Not recorded
Max Raw Capacity	Not recorded	Not recorded
Total Bays	4 Manufacturer source The chassis has 4 SATA drive bays for 2.5-inch or 3.5-inch drives. Ubiquiti UNAS 4 manufacturer product page → Source section Model overview Model Ubiquiti UNAS 4 Region US Ubiquiti store Firmware Not specified by this source Checked 2026-10-04 Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support. Document check only; not a hands-on test or verification of every regional or firmware variant.	8 Manufacturer source The chassis has 8 SATA drive bays for 2.5-inch or 3.5-inch drives. Ubiquiti UNAS Pro 8 manufacturer product page → Source section Model overview Model Ubiquiti UNAS Pro 8 Region US Ubiquiti store Firmware Not specified by this source Checked 2026-10-04 Drive-bay counts do not imply disks are included. Cache slots do not establish SSD storage-pool support. Document check only; not a hands-on test or verification of every regional or firmware variant.

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology