TrueNAS R-Series · Powerful Single Controller Storage

TrueNAS R20

Storage Type: Hybrid (HDD + SSD cache)
Form Factor: 2U–10U scalable
CPU: 6–16 Cores
Memory: 64–192 GB DRAM
Cache: 2× 800 GB SATA SSDs
Networking: 2× 10/25/40/100 GbE + up to 6× 10GBaseT
Max Throughput: 8 GB/s
Max Raw Capacity: 3.4 PB

Request Pricing View Datasheet

Overview

The TrueNAS R20 offers high-density unified storage solutions that combine the robust features of OpenZFS with cost-effective, single-controller hardware. Available in hybrid configurations, the R20 delivers exceptional density and price-performance, making it ideal for organizations seeking scalable and reliable storage without compromising on quality.

Designed to maximize your storage budget, the R20 caters to environments that prioritize performance and scalability per dollar. Whether deployed as a standalone NAS/SAN/object storage solution or as nodes within a scale-out S3 cluster, the R20 provides versatile storage options with up to 132 drives, 3.4 PB raw capacity, and 8 GB/s throughput.

Features and Benefits

The capabilities that make the TrueNAS R20 a cost-effective hybrid storage platform delivering enterprise-grade density and performance in a scalable 2U–10U chassis.

High-Density Unified Storage

OpenZFS + Single-Controller Value — Maximum Density per Dollar

The TrueNAS R20 combines the robust capabilities of OpenZFS with cost-effective, single-controller hardware, available in hybrid configurations. The self-healing OpenZFS file system features copy-on-write, automatic bit-rot detection, built-in RAID protection, unlimited snapshots, and resilient replication to safeguard data integrity across up to 3.4 PB of raw capacity.

Advanced Data Protection

Features self-healing OpenZFS file system with copy-on-write, automatic bit-rot detection, built-in RAID protection, unlimited snapshots, and resilient replication to safeguard data integrity.

Scalable Architecture

Supports scale-up and scale-out S3 configurations, allowing seamless expansion from a single NAS/SAN/object target to clustered deployments, adapting to evolving storage requirements.

Connectivity and Integration

2× 10/25/40/100 GbE

Dual high-speed optical ports support 10, 25, 40, or 100 GbE connectivity for flexible integration with any switching fabric.

Up to 6× 10GBaseT

Additional copper 10G ports expand management and data-path capacity using existing Cat6A infrastructure.

2× 32 Gb Fibre Channel

Optional 32 Gb FC connectivity enables SAN block storage access for FC-attached servers and hypervisors in existing FC fabrics.

Flexible Integration

Compatible with major virtualization hypervisors, backup software, cloud storage services, and offers a fully-featured REST API for streamlined management.

Simplified Data Management

Cost-Effective Performance — Enterprise Storage Without the Enterprise Price

The TrueNAS R20 optimizes per-dollar performance and scalability, delivering enterprise-grade storage solutions without compromising on quality or breaking the budget. Powerful features like data protection, snapshots, replication, scrubbing, data reduction, and security simplify data management tasks and reduce administrative overhead through integrated enclosure management.

2× 800 GB SATA SSD Cache

Dual SATA SSD cache devices accelerate read and write performance for frequently accessed data, bridging the gap between HDD density and flash-like responsiveness.

TrueSecure Security

FIPS 140 for data-at-rest and data-in-flight, NIST 800-209, GP-OS STIG, KMIP key management, and encrypted drives and datasets protect all stored data end-to-end.

View all features in the datasheet

Authorized TrueNAS Reseller

More than a price tag

Getting the R20 right means choosing the correct CPU tier, DRAM, and drive mix for your workload. Tell us your capacity target and workload type and we'll configure the right R20 and stay on the order until it ships.

Configuration guidance from people who know TrueNAS
Authorized-reseller pricing, without the procurement friction
Order follow-through — from PO to delivery

Talk to a Specialist View Datasheet

Technical Specifications

Hardware metrics from the official TrueNAS datasheet.

Platform

TrueNAS R20
Storage Type

Hybrid
Form Factor

2U–10U scalable
Chassis Depth

26″, 660 mm
Controllers

Single
Drive Bays

12× 3.5″, 2× 2.5″
CPU per Controller

6–16 Cores
DRAM per Controller

64–192 GB

Read & Write Cache

2× 800 GB SATA SSDs
Max Throughput

8 GB/s
Max Raw Capacity

3.4 PB
Max Effective Capacity

7 PB
Max Drives Supported

132
Expansion Shelves

2

High-Speed Networking

2× 10/25/40/100 GbE
Additional Networking

2 or 6× 10GBaseT or SR
Fibre Channel (Option)

2× 32 Gb

File Protocols

SMB v1/2/3, NFSv3/v4/RDMA, FTP, WebShare
Block Protocols

iSCSI, iSER, Fibre Channel, NVMe-oF, OpenStack Cinder
Object Protocols

S3-compliant using MinIO AIStor (single node, clustered)
Directory Services

Active Directory, FreeIPA, Kerberos, LDAP, NIS
File System

OpenZFS — self-healing, immutable snapshots, RAID-Z1/Z2/Z3, dRAID
TrueSecure Security

FIPS 140, NIST 800-209, GP-OS STIG, KMIP key management, encrypted drives and datasets
Cloud Backup

iX-Storj, Amazon S3, Backblaze B2, Google Cloud, Microsoft Azure
Backup Integration

Supports Asigra, Acronis, Veeam, Nakivo, NetBackup, and more

View datasheet for full specs

Compare TrueNAS R-Series Models

Select the right scale for your storage workload.

TrueNAS R-Series model comparison by throughput, capacity, and networking.
Model	Max Throughput	Max Raw Capacity	Networking	Action
TrueNAS R20 This model	8 GB/s	3.4 PB raw	2× 10/25/40/100 GbE	Current
TrueNAS R50	10 GB/s	6.5 PB raw	2× 10/25/40/100 GbE	View
TrueNAS R60	60 GB/s	7 PB raw	2× 400 GbE or 4× 25/100/200 GbE	View

R20 vs R50: deeper buyer guide

Frequently asked questions

The TrueNAS R20 is a hybrid, single-controller rackmount NAS appliance with 12+2 drive bays, up to 3.4 PB raw capacity, and 8 GB/s throughput. It runs TrueNAS Enterprise on OpenZFS.

Up to 3.4 PB raw capacity, scaling to roughly 7 PB effective with OpenZFS compression and deduplication. The chassis supports up to 132 drives with expansion shelves.

No — the R20 is single-controller. For dual-controller HA in a hybrid form factor, the M-Series is the closest match.

2× 10/25/40/100 GbE primary networking, plus up to 6× 10GBaseT, with optional 2× 32 Gb Fibre Channel for SAN integration.

SMB, NFS (incl. NFSv4 RDMA), iSCSI, iSER, NVMe-oF, Fibre Channel, and S3-compatible object via MinIO AIStor. Backup integration with Veeam, Acronis, Nakivo, NetBackup, and TrueCloud.