The Ubiquiti UniFi Drive UNAS Pro 4 (Model: UNAS-Pro-4) with included dual 1TB M.2 NVMe SSD cache is a powerful 1U rackmount network attached storage server engineered for seamless high-throughput file storage and automated backup workflows. Built upon a quad-core ARM Cortex-A57 processor operating at 2.0 GHz with 8 GB system memory, the unit efficiently processes multi-user SMB and NFS file transactions while running local encryption and real-time snapshot services.
This package configuration incorporates two pre-installed 1TB M.2 NVMe SSDs in dedicated caching slots, establishing a robust 2TB NVMe cache layer to dramatically accelerate random read/write operations and reduce latency for frequently accessed enterprise files. Built for continuous uptime, the chassis houses four 2.5"/3.5" hot-swappable SATA drive bays with a dedicated 125W power budget, dual 10G SFP+ fiber connectivity, and a USP-RPS DC input for secondary power redundancy.
Comprehensive Key Features:
Dual 1TB NVMe SSD Cache Installed: Includes two 1TB M.2 NVMe SSDs configured for write-through/write-back cache acceleration to maximize I/O performance.
High-Speed 10G Backhaul: Dual 10G SFP+ optical ports alongside a GbE RJ45 management port deliver massive network bandwidth for concurrent users.
Flexible RAID Protection: Supports RAID 5, RAID 6, and RAID 10 arrays across four hot-swappable 2.5"/3.5" HDD/SSD bays with data encryption.
Complete Backup & Cloud Sync: Native support for Apple Time Machine, automated volume snapshots, and direct cloud backup synchronization (Google Drive, OneDrive, Amazon S3, Backblaze).
Power Redundancy Support: Equipped with an internal 150W AC power supply and a USP-RPS DC inlet to protect against power feed failures.
1U Rackmount Steel Chassis: Durable SGCC steel housing featuring a 1.3" LCM touchscreen for real-time system monitoring and diagnostic telemetry.
Extended Technical Specifications:
1. Hardware & Physical Parameters:
Model / SKU: UNAS-Pro-4 (UniFi Drive UNAS Pro 4)
Dimensions: 442.4 x 400 x 43.7 mm (17.4 x 15.7 x 1.7")
Weight: 6.7 kg (14.8 lbs)
Enclosure Material: SGCC Steel
Form Factor: 1U Rackmount
Processor: Quad-Core ARM® Cortex®-A57 at 2.0 GHz
System Memory: 8 GB
Drive Bays: (4) 2.5"/3.5" SATA III Hot-Swappable Bays
SSD Caching Slots: (2) M.2 NVMe 2280 Slots (Populated with 2x 1TB SSDs)
Display: 1.3" LCM Touchscreen Status Display
2. Networking & Software Parameters:
Network Interfaces: (2) 10G SFP+ Ports, (1) GbE RJ45 Port
Supported File Protocols: SMB (CIFS), NFS
RAID Configurations: RAID 5, RAID 6, RAID 10 (Single Array Group)
Data Services: Volume Snapshots, File Encryption, Share Links, Time Machine Backup
3. Electrical & Environmental Parameters:
Power Method: 100–240V AC Internal Power Supply (150W) / USP-RPS DC Input (11.5V DC, 13.91A)
Max. Power Consumption: 150W
Max. Drive Power Budget: 125W
Ambient Operating Temperature: -5°C to 40°C (23°F to 104°F)
Ambient Operating Humidity: 5% to 95% Non-condensing
Certifications: CE, FCC, IC, NDAA Compliant