• Overview
  • Technical Specifications
  • Performance
  • Accessories

Performance and Data Security

Data SecurityConsidering a multi-drive storage system? If so, you already know about the benefits of striping data across multiple drives—you’ll gain the abilities to achieve faster performance and protect your files. Sonnet’s Fusion R400S RAID rackmount SATA storage system delivers speed, reliability, and versatility in an easy to deploy package. This 0TB, 4TB, 8TB, 12TB, or 16TB 1U rackmount system offers enhanced data security, too—it features a high-performance internal RAID controller that manages the enclosed drives and supports RAID 5 drive formatting, which provides data protection in case one of the drives fails. This Sonnet storage system incorporates informative status LEDs, and simple to use controls that enable you to easily configure the drives.

Tempo SATA Pro 6Gb CardsConnected to a Sonnet Tempo™ SATA Pro 6Gb 4-Port or Tempo SATA Pro 6Gb PCIe 2.0 2-port host controller installed in a Mac or Windows computer, a Fusion R400S RAID system’s drives can be accessed at speeds exceeding 220 MB/s. With its drives configured as a RAID 5 group (four drives striped with parity across all group members), a single Fusion R400S RAID system achieves data throughput of 240 MB/sec read and 220 MB/sec write. Do you want even more performance? Up to four Fusion R400S RAID systems can be RAIDed on a single Tempo SATA Pro 6Gb 4-Port controller for enhanced data throughput and multiple times the available streams.

Flexible Formatting Options

RAID Formatting Options

In addition to RAID 0 and RAID 5, Fusion R400S RAID supports RAID 10, Span, and Clone drive formatting. With RAID 10, two drives are combined into a single volume, while the remaining two drives mirror the data on the first two, providing good performance and better file security. Span formatting combines all four drives' capacity into a single, large volume. Clone formatting provides the most security by mirroring the data from one drive on the other three. The Fusion R400S RAID also provides a JBOD (Just a Bunch Of Disks) formatting option when you connect it to an eSATA controller that supports port multipliers. Whichever mode you choose, setup is as simple as setting a switch.

Fusion R400S RAID RAID mode selector switch and eSATA Port

Quick to Configure—Fusion R400S RAID features an easy RAID mode selector switch and a locking eSATA port to secure the included locking eSATA cable.

Simple Status Display, S.M.A.R.T. Too

Status LED indicators on the front panel enable you to determine drive presence, activity, fault, and rebuild status at a glance. When used with an eSATA host controller that supports it, the Fusion R400S RAID supports S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology) data reporting, enabling you to use your computer's drive formatting program to display drive health.

Fusion R400S RAID Status Display

Key Features

Range of Storage Configurations—0TB, 4TB, 8TB, 12TB, or 16TB capacity(1)

High Performance, Protected Data—When drives configured as a RAID 5 set, data transfers up to 240 MB/sec read, 220 MB/sec write while protecting the data

RAID Controller Onboard—Integrated hardware RAID controller supports RAID 0, RAID 5, RAID 10, Span, and Clone drive configurations on its own; no need for a specialized RAID controller card. Supports JBOD formatting when used with SATA controller that supports port multipliers

Simple Cofiguration—A simple switch enables you to select RAID modes and configure the drives to meet your performance and data security needs

Simple Status Display—Determine operating status at a glance

eSATA Interface—Single cable to host connection simplifies set up and reduces cable clutter

Quiet Fans—Low fan noise levels make this Fusion storage system suitable for use in noise-sensitive environments

Wide Host Controller Card Compatibility—Compatible with Sonnet's full line of Tempo PCIe and ExpressCard/34 host controllers

Cross Platform Compatibility—Supports Mac® and Windows®, and Linux® computers


Locking eSATA Cable IncludedOne Cable, All the Data

The Fusion R400S RAID enclosure requires just a single locking eSATA data cable (included) to connect the enclosure to a SATA host controller card. This efficient interface simplifies setup and cuts cable clutter while offering a significant improvement in data throughput speeds when compared with FireWire® 800, FireWire 400 and USB 2.0 interfaces.

Quiet Enough to Sit Beside You

To keep things cool, the 1U rackmount Fusion R400S RAID system enclosure, at just 1.75" tall, is simple to deploy in most server racks, but can also be used on a desktop. Use of three low noise fans make it suitable for use in noise-sensitive environments, too.

Driving Force

The Fusion R400S RAID storage system employs Sonnet-certified desktop drives that have been selected for their superior performance, error handling, and reliability characteristics, especially when used in RAID groups. These drives are subjected to hours of additional, stringent testing to check for soft errors, vibration, and other reliability predictors. Just the sturdiest drives pass these tests become the building blocks of a super-reliable Fusion storage system.

Versatile Performance

Whether you're editing multiple streams of ProRes HD video, mixing multiple channels of audio, maintaining databases, or running a Web site, you'll find this system ideal for use in a variety of tasks. The flexibility and interoperability that the Fusion R400S RAID storage system provides are a great match for the various operating systems, applications and output demands your workflow requires. This Fusion storage system supports Mac, Windows, and Linux computers.

Customizable Storage Option

Looking for a storage system that is more closely tailored to your needs, one with a lower storage capacity, for instance? Choose the Fusion R400S RAID 0TB—you purchase the drives that best suit your capacity and performance needs, and then install them yourself.

Fusion R400S RAID Front and Back Views
See Technical Specifications Tab for footnotes


Part No.  
FUS-R4SR5-0TB Discontinued
FUS-R4SR5-4TB Discontinued
FUS-R4SR5-8TB Discontinued
FUS-R4SR5-12TB Discontinued
FUS-R4SR5-16TB Discontinued
Warranty 1-year
Form Factor Rackmount storage enclosure
External Connectors One locking eSATA
eSATA Interface Speed 3 Gb/s
Data Transfer Speed Up to 240 MB/s, depending on interface used(2) and drive configuration
Drives Supported

Up-to-date compatible hard drives listed on our Certified Hard Drive Compatibility Chart

Supported Drive Configurations Hardware-based RAID 0, 5, and 10; span, clone, and JBOD(3)
Power Supply Universal 220W, 100–240V AC, 50–60Hz
Operating Temperature +32º F to +104º F (0º C to +40º C)
Dimensions (WxDxH) 17.0 x 16.25 x 1.75 in. (43.2 x 41.3 x 4.4 cm)
Weight (with drives, approxmiate) 20.2 lbs (9.16 kg)
RoHS Compliant Yes
Package Contents
  • Fusion R400S RAID Rackmount Storage Enclosure
  • Four 3.5" drive trays (0TB model) or drive modules (all other models)
  • One locking eSATA data cable
  • One power cord
  • Documentation


Specifications subject to change without notice.





Hardware Compatibility

Mac® (Intel-based), Windows®, or Linux® computer with a compatible host controller card installed (such as Sonnet's Tempo PCIe and ExpressCard/34 line of cards)

OS Compatibility

OS X® and Server 10.6.8+

OS X Yosemite compatible

Windows 8, 7, Vista®, XP Pro, Server: 2008, 2003

Linux (RedHat ES 3, 4; Suse RedHat ES 3, 4; Suse Linux 9, 9.1, 9.2, 9.3, 10, 10.1 and the following architectures: i386; x86_64 (AMD64, Intel EM64T)

Technical Notes

  1. Although hard drive manufacturers and Mac OS X 10.6 define 1 gigabyte as 1,000,000,000 byte, many other computer operating systems calculate a gigabyte by dividing the bytes by 1,073,741,824 (). This distinction may be a cause of confusion, as a hard disk with a manufacturer rating of 1000GB may have its capacity reported by the operating system as 915GB.
  2. When connected to a computer via its eSATA interface, the Fusion R400S RAID storage system performs its best when used with a high performance SATA host controller such as Sonnet's Tempo SATA Pro 6Gb 4-Port or Tempo SATA Pro 6Gb PCIe 2.0 for computers with PCI Express slots, or Tempo SATA Pro 6Gb ExpressCard/34 or Tempo edge SATA Pro 6Gb ExpressCard/34 for portable computers with an ExpressCard slot.
  3. JBOD formatting requires the use of a SATA host controller with port multiplier support


Mac Logo Windows LogoLinux LogoeSATA LogoroHS Logo


Fusion R400S RAID Performance

Configuration: Fusion R400S RAID 16TB connected to Tempo SATA Pro 6Gb PCIe 4-Port host controller installed in 12-core 2.93 GHz Mac Pro w/16GB of RAM. Drives were configured as a RAID 5 set.


Video Codec Resolution Streams
HDV 720p60 (1 stream=2.4 MB/s) 1280x720 10
HDV 1080i60 (1 stream = 3.2 MB/s) 1440x1080 14
XDCAM HD 35mbit (1 stream = 4.3 MB/s) 1920x1080 10
XDCAM HD 50mbit (1 stream = 6.1 MB/s) 1920x1080 10
DVCProHD 1080i30 (1 stream=13.9 MB/s) 1920x1080 5
ProRes (Proxy) 720 (1 stream=20.2 MB/s) 720x486 4
ProRes 422 (1 stream=15.1 MB/s) 1440x1080 4
ProRes 422 HQ (1 stream=22.4 MB/s) 1440x1080 4
ProRes 4444 (1 stream=35.8 MB/s) 1920x1080 2
Uncompressed 10-bit 422 (1 stream=132.0 MB/s) 1920x1080 0
Fusion R400S RAID Accessories Part No. Description
Fusion R400S RAID Drive Module Fusion R400S RAID 1TB Drive Module FUS-RM7-1000GB Spare drive module for Fusion R400S RAID
Fusion R400S RAID 2TB Drive Module FUS-RM7-2000GB Spare drive module for Fusion R400S RAID
Fusion R400S RAID 3TB Drive Module FUS-RM7-3000GB Spare drive module for Fusion R400S RAID
Fusion R400S RAID 4TB Drive Module FUS-RM7-4000GB Spare drive module for Fusion R400S RAID
Fusion R400S RAID Drive Tray Fusion R400S RAID Drive Tray FUS-SATA-TRAY7 Spare drive tray for Fusion R400S RAID
Fusion Slide Rack Set Fusion Rack Slide Set (17.5-21") FUS-RSS-P Rack Mount Sliding Rail Kit (17.5-21" rack)
Fusion Rack Slide Set (23-26.5") FUS-RSS-S Rack Mount Sliding Rail Kit (23-26.5" rack)
Fusion Rack Slide Set (27-30.5") FUS-RSS Rack Mount Sliding Rail Kit (27-30.5" rack)
Fusion Rack Slide Set (29-32.5") FUS-RSS-L Rack Mount Sliding Rail Kit (29-32.5" rack)