Buffalo TeraStation 5820DN 80TB 8-Bay Desktop NAS Server (4 x 20TB)

The Buffalo TS5820DN8004 is an eight-bay desktop NAS server that provides 80TB of raw capacity through four pre-installed 20TB drives, leaving four open bays for future growth. It is built for offices and workgroups that need a central place to store, share, and safeguard large datasets without relying on separate external drives or cloud subscriptions alone.

Inside the chassis, a 2.04 GHz Annapurna Labs AL524 processor works with 8 GB of DDR4 memory to keep file transfers responsive, even when multiple users access the system at the same time. Dual 1 GbE ports allow straightforward integration into existing networks, while a dedicated 10 GbE RJ45 port is ready for workstations or backbone switches that require higher throughput.

The system supports RAID levels 0, 1, 5, 6, and 10 as well as JBOD, so administrators can choose between maximum capacity, balanced performance, or redundancy that withstands multiple drive failures. Hot-swappable drive trays make it possible to replace or add disks without shutting the server down, reducing disruption in a busy environment.

For organizations that handle sensitive material, the TeraStation offers 256-bit drive encryption and optional two-factor authentication. These protections are helpful for companies subject to regulatory guidelines or those that simply want peace of mind when handling client files. Certification for VMware and Microsoft Hyper-V means the NAS can act as shared storage in a virtualized infrastructure, supporting test labs or production workloads.

Backup options extend beyond the local network. Built-in hooks for services such as Dropbox and Amazon S3 let teams create off-site copies with minimal configuration, making it easier to follow the 3-2-1 backup rule without extra software. Whether you are an IT manager in a growing firm, a creative professional archiving video projects, or an administrator seeking a reliable target for virtual machine snapshots, this TeraStation fits naturally into the workflow.

Highlights:

• 80TB capacity through four 20TB drives, with four additional bays open for expansion
• Eight-bay design with hot-swappable trays to reduce downtime during maintenance
• 2.04 GHz Annapurna Labs AL524 processor and 8 GB DDR4 memory for responsive performance
• Connectivity through dual 1 GbE ports plus one 10 GbE RJ45 port
• RAID support for 0, 1, 5, 6, 10, and JBOD configurations
• 256-bit drive encryption and optional two-factor authentication for stronger security
• Certified for VMware and Microsoft Hyper-V environments
• Cloud integration with Dropbox, Amazon S3, and other services for flexible backups