Product Type | NAS Server |
Form Factor | Desktop |
Total Installed Storage Capacity | 48 TB |
Installed Drives | 4 x 12TB HDDs |
Number of Drive Bays | 8 |
Expansion Bays Available | 4 |
Supported Drive Form Factor | 3.5-inch |
RAID Levels Supported | RAID 0, 1, 5, 6, 10, JBOD |
Processor | Annapurna Labs AL314, Quad-Core 1.7 GHz |
System Memory (RAM) | 8 GB DDR3 ECC |
Power Supply | Internal 100 – 240V AC, 50/60 Hz |
Power Consumption (Operating) | Approx. 100W |
Hot-Swappable Drives | Yes |
BUFFALO TERASTATION 5820DN NAS 48TB Desktop Storage





Key Benefits

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- Includes four high-capacity 12TB drives pre-installed, allowing for immediate 48TB usage out of the box
- Supports future-proof scalability with four empty bays, enabling seamless storage expansion
- Gigabit+ 10GbE connectivity provides performance headroom for data-intensive enterprise workloads
Product Overview
The BUFFALO TERASTATION 5820DN NAS 48TB is an enterprise-grade desktop storage solution with 8 drive bays, including 4 pre-installed 12TB drives totaling 48TB of capacity. Designed for performance and scalability, it features RAID support, iSCSI capabilities, and a 10GbE interface for fast data access. Its desktop form factor and TAA compliance make it suitable for secure professional environments such as government and institutional settings. The remaining four open bays allow for gradual expansion, ensuring long-term value.
Specifications
Product Overview
Wireless Features
Wi-Fi Support |
Compliance & Origin
Country of Origin | Japan |
TAA Compliant | Yes |
Certifications | VCCI, CE, FCC, RoHS |
Regulatory Approvals | BSMI, UL, cUL |
Advanced Security Features
Encryption | 256-bit AES Data Encryption |
Drive Encryption | Yes |
User and Group Management | Integrated with Active Directory |
Antivirus Integration | Optional, supports Trend Micro NAS Security (license required) |
Network Security | Port Filtering, SSL/TLS, IP Address Filtering |
Backup Encryption | Yes |
Interfaces
LAN Port | 1 x 10GbE (SFP+), 2 x 1GbE (RJ45) |
USB Ports | 2 x USB 3.0, 2 x USB 2.0 |
iSCSI Support | Yes |
Network File Protocols | SMB, AFP, FTP, SFTP, NFS, HTTP/HTTPS |
Max Concurrent SMB Connections | 200+ |
Wake-on-LAN | Yes |
Physical & Environmental
Dimensions (W x D x H) | 300 x 230 x 215 mm |
Weight | Approximately 9 kg |
Operating Temperature | 5°C to 35°C |
Operating Humidity | 20% to 80% (non-condensing) |
Cooling Type | Active cooling with internal fans |
Noise Level (typical) | Approx. 35 dBA |
Cloud Management & Licensing
Remote Management | Buffalo NAS Navigator, Web GUI |
Cloud Storage Backup Support | Amazon S3, Dropbox, Azure |
Included Software | NovaBACKUP Buffalo Edition (11 licenses) |
Firmware Update Method | Manual or auto via Web UI |
Active Directory Integration | Yes |