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Multiple Drives, No Compromise

Digital content creation and editing requires more speed and space than standard desktop drives are capable—why limit yourself to a single drive? Sonnet’s award-winning Fusion™ D400Q desktop and R400Q rackmount storage systems (except 0TB models) provide up to 8TB(1) of storage in four swappable drive modules, and four ways to connect them to your computer. They offer speed, versatility, and reliability—they’re great solutions for anyone looking for an affordable storage system that will fit into a variety of workflows.

One Cable, All the Data

Fusion Enclosure Back PanelFusion D400Q and R400Q enclosures employ a high performance SATA II port multiplier to manage the enclosed drives—just a single locking data cable connects the enclosure to an eSATA host controller card. This efficient interface simplifies setup and cuts cable clutter without compromising performance. No SATA? No problem—connected via a single FireWire® 800, FireWire 400, or USB cable, all four drives can be accessed at the full speed of the respective interface. There is no need to reformat drives when changing from one interface to another, regardless the configuration.

Quad Interface Logos

Maximum Performance, Maximum Convenience

Connected to a Sonnet Tempo™ SATA E4P PCIe or X4P PCI-X host controller installed in a Mac® or Windows® computer, a Fusion D400Q or R400Q system’s drives can be accessed through its port multiplier(2) at maximum speed, whether configured as a RAID 0, 1, 10, or JBOD set. With its drives configured as a RAID 0 striped set, a single Fusion D400Q or R400Q system achieves data throughput of 220MB/sec, fast enough to support multiple streams of DV, HDV, DVCPRO, ProRes 422, or a single stream of uncompressed 10-bit NTSC video. Do you want even more performance? Up to four Fusion D400Q or R400Q systems can be ganged on a single Tempo SATA E4P or X4P controller for enhanced data throughput and multiple times the available streams (as well as increasing the number of supported video formats).

Driving Force

Fusion storage systems (except 0TB models) employ Enterprise/RAID Edition hard drives or select, Sonnet certified desktop drives(3) 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 and are prepared with special RAID-optimized firmware to become the building blocks of a super-reliable Fusion storage system.

Versatile Performance

These systems are ideal for use in mixed environments—various operating systems, editing applications and output demands requiring the flexibility and interoperability that Fusion D400Q and R400Q storage systems provide. Fusion storage systems support Mac OS® X, Windows® 7, Windows Vista®, Windows XP, Windows Server 2008 and 2003, and Linux. They are compatible with capture cards from AJA, Blackmagic Design, Matrox, and Bluefish444, and work with all mainstream video editing applications including Apple® Final Cut Pro®, and Adobe® Premiere® Pro.

Key Features

eSATA, FireWire 800, FireWire 400, and USB 2.0 interfaces

Single cable to host connectivity through an integrated port multiplier for all interfaces

0TB, 2TB, 4TB, 6TB, or 8TB configurations(1)

Up to 220 MB/sec transfer rate through eSATA interface (drives configured as RAID 0 set)

Drive Activity, Drive Presence, and Power LED indicators

Quiet fans

eSATA, FireWire 800, FireWire 400 and USB cables included

Compatible with Sonnet Tempo™ SATA II PCI-X, PCIe, and ExpressCard/34 host controllers

RoHS compliant


Desktop or Rackmount

To keep things cool, the Fusion D400Q uses a swappable fan module. The fan is 80% quieter than a standard case fan, making this system perfectly suited for use in noise-sensitive environments. The 1U rackmount Fusion R400Q system enclosure, at just 1.75" tall, is simple to deploy in most server racks. Both systems feature drive presence and drive activity LED indicators on their front panels, so drive status can be determined at a glance.


Fusion D400Q storage systems integrate an ultra-quiet, user-swappable fan module using the Vantec Stealth™ fan. This fan is 80% quieter than a standard case fan, making this system perfectly suited for use in noise-sensitive environments.

Secure Connection
Fusion D400Q and R400Q enclosures link to Sonnet Tempo SATA E4P and X4P SATA host controller cards with Sonnet's exclusive locking eSATA data cables with connectors that lock securely at both ends.

Expandability to Start

Looking for a desktop or rackmount 4-drive, removable storage system to expand with your needs? Fusion D400Q-0TB and R400Q-0TB storage systems offer the same great features as Sonnet’s other D400Q and R400Q models, but without the hard drives(3). Of course performance, capacity, and RAID reliability are dependent on drive choice.

Part No. Product Discontinued
Warranty 5-year
External Connectors eSATA, 2 x FireWire 800, FireWire 400, Mini-USB
Drives Supported 3 & 1.5 Gb per second Serial ATA; up to 7,200 RPM
Data Transfer Speed Up to 220 MB/s, depending on interface used and configuration
Supported Drive Configurations JBOD; software-based RAID 0, 1, 10
Supported Video Formats Uncompressed 10-bit NTSC HD, Pro Res 422, DV, HDV, DVCPRO, and uncompressed SD
Power Supply Universal 180W, 100–240V AC, 50–60Hz
Operating Temperature +32º F to +95º F (0º C to +35º C)
Dimensions (D400Q) WxDxH: 5.9 x 11.2 x 7.5 in (14.9 x 28.5 x 19.0 cm)
Dimensions (R400Q) WxDxH: 17.0 x 16.5 x 1.75 in (43.8 x 41.9 x 4.4 cm)
Weight (D400Q) 17 lbs (7.7 kg) with drives,
10.8 lbs (4.9 kg) without
Weight (R400Q) 21.2 lbs (9.6 kg) with drives,
15 lbs (6.8 kg) without

Fusion D400Q: 40 dBA
Fusion R400Q: 41 dBA
(Ambient Office: 40-50 dBA)

Package Contents
  • Disk enclosure
  • Four 3.5" drive modules or drive trays (with drive mounting hardware)
  • Two eSATA cables
  • One FireWire 800 cable
  • One FireWire 400 cable
  • One USB cable
  • Power cord
  • User’s Guide






OS Compatibility

Platform independent—Mac®, Windows®(4), and Linux®

Capture Card Compatibility

AJA, Blackmagic Design, Matrox, and Bluefish444

Video Editing Application Compatibility

Apple Final Cut Pro, Adobe Premiere Pro

Technical Notes

  1. Although most hard drive manufacturers define 1 gigabyte as 1,000,000,000 byte, the computer operating systems usually calculate a gigabyte by dividing the bytes (whether it is disk capacity, file size, or system RAM) by 1,073,741,824 (). This distinction may be a cause of confusion, as a hard disk with a manufacturer rating of 500GB may have its capacity reported by the operating system as 454.7GB.
  2. When connected to a computer via its eSATA interface, Fusion D400Q and R400Q storage systems require a SATA host controller that supports port multipliers, such as Sonnet's Tempo SATA E4P for computers with PCI Express slots, Tempo SATA X4P for computers with PCI-X slots, or Tempo SATA Pro ExpressCard/34 or Tempo SATA ExpressCard/34 for portable computers with an ExpressCard slot.
  3. Sonnet Technologies has qualified and specifies the hard drives listed here for use in Fusion D400Q and R400Q storage systems. These drives were chosen for their superior performance, error handling, and reliability characteristics, especially when used in RAID groups. Sonnet recommends the use of these Enterprise/RAID edition hard drives and select, Sonnet certified desktop hard drives in your Fusion storage system to ensure system reliability and performance. STANDARD DRIVES MAY NOT BE SUPPORTED AND MAY DEGRADE SYSTEM RELIABILITY AND PERFORMANCE.

    500GB Models
    • Hitachi Deskstar E7K500, # HDS725050KLA360
    • Hitachi Ultrastar A7K1000, # HUA721050KLA330
    • Maxtor MaXLine Pro 500, # 7H500F0
    • Samsung Spinpoint F RAID, # HE502IJ
    • Seagate Barracuda ES, # ST3500630NS
    • Seagate Barracuda ES.2, # ST3500320NS(5)
    • Seagate Constellation ES, # ST3500514NS
    • Western Digital RE3 Enterprise, # WD5002ABYS

    750GB Models
    • Hitachi Ultrastar A7K1000, # HUA721075KLA330
    • Samsung Spinpoint F RAID, # HE753LJ
    • Seagate Barracuda ES, # ST3750640NS
    • Seagate Barracuda ES.2, # ST3750330NS(5)
    • Western Digital, RE3 Enterprise, # WD7502ABYS

    1TB Models
    • Hitachi Ultrastar A7K1000, # HUA721010KLA330
    • Samsung Spinpoint F RAID, # HE103UJ
    • Seagate Barracuda ES.2, # ST31000340NS(5)
    • Seagate Constellation ES, # ST31000524NS
    • Western Digital, RE3 Enterprise, # WD1002FBYS

    1.5TB Models
    • Seagate Barracuda 7200.11, # ST31500341AS(6)
  4. Creating RAID volumes under Windows requires dynamic disk storage, a formatting option available with Windows Server 2003 SP1, Windows XP Professional (32- and 64-bit versions), or Windows Vista Enterprise or Ultimate (32- and 64-bit versions). In order to create RAID volumes larger than 2TB, you must do one of the following: Concatenate (link together in a virtual chain) the volumes, and then format them as NTFS. -OR- Use GPT formatting. Note that drives and volumes with GPT formatting are not visible to any version of Windows XP Professional, nor to the 32-bit version of Windows Server 2003 SP1.
  5. Barracuda ES.2 drives may be used with revision J (April 9, 2008) and later versions of Fusion D400Q and all versions of Fusion R400Q, but only Seagate ES.2 drives with firmware versions SN06 and newer compatible. Seagate ES.2 drives with firmware versions SN03, SN04, or SN05 are NOT compatible. Click here to view location of firmware number on hard drive.
  6. Only Seagate Barracuda 7200.11 1.5TB drives with firmware versions SD1B and CC1H are compatible.

Specifications subject to change without notice.

Mac OS LogoWindows Logo Linux Logo eSATA Logo roHS Logo

Fusion D400Q and Fusion R400Q Benchmarks

Fusion D400Q (or R400Q) with four 1TB drives configured as a RAID 0 set, connected to Tempo SATA E4P host controller installed in Quad 2.66 GHz Mac Pro with 3GB of RAM and an AJA Kona3 capture card.



(1 stream=3.6 MB/s)


(1 stream=7.2 MB/s)


DVCPRO HD 720p 59.94
(1 stream=14.4 MB/s)


DVCPRO HD 1080i 29.97
(1 stream=16 MB/s)


HDV 720p
(1 stream=2.4 MB/s)


HDV 1080i 29.97
(1 stream=3.1 MB/s)


ProRes 422 NTSC SD
(1 strm=5.25 MB/s)


ProRes 422 HQ NTSC SD
(1 stream=7.87 MB/s)


ProRes 422 720p 59.94
(1 stream=18.375 MB/s)


ProRes 422 HQ 720p 59.94
(1 stream=27.5 MB/s)


ProRes 422 1080i 29.97
(1 stream=18.375 MB/s)


ProRes 422 HQ 1080i 29.97
(1 stream=27.5 MB/s)


Uncompressed 8-bit NTSC
(1 stream=21.0 MB/s)


Uncompressed 10-bit NTSC
(1 stream=28.0 MB/s)


Uncompressed 8-bit 720 HD
(1 stream=55.2 MB/s)


Uncompressed 10-bit 720 HD
(1 stream=73.6 MB/s)


Uncompressed 8-bit 1080i HD
(1 stream=124.3 MB/s)


Uncompressed 10-bit 1080 HD
(1 stream=165.7 MB/s)


* Supports 1 stream of playback. Capture supported if disk array is less than 80% full and not extremely fragmented.

About stream count testing:
We've conducted in-depth, real-world testing to provide you with realistic results. Testing was conducted after weeks of use, during which time projects were captured, parts deleted, more parts captured, rendered, and so on, leaving the drives 85% full and fragmented. The stream counts we present here reflect the reduced performance that results from day-in, day-out use. Many storage systems work well the day you get them, but the true test is whether one will continue to serve you when you push the envelope. Fusion storage systems won't let you down.

Product image Product Name Part No. Description
Fusion RAID Drive Module Fusion 500GB RAID Drive Module FUS-RM-0500GB Spare drive module for Fusion D400Q/R400Q
Fusion 750GB RAID Drive Module FUS-RM-0750GB Spare drive module for Fusion D400Q/R400Q
Fusion 1TB RAID Drive Module FUS-RM-1000GB Spare drive module for Fusion D400Q/R400Q
Fusion 1.5TB RAID Drive Module FUS-RM-1500GB Spare drive module for Fusion D400Q/R400Q
Fusion 2TB RAID Drive Module FUS-RM-2000GB Spare drive module for Fusion D400Q/R400Q
Fusion Quiet Fan Module Fusion Quiet Fan Mocule FUS-XFAN Spare fan module for Fusion D400Q
Fusion Rack Slide Set Fusion Rack Slide Set (17.5-21") FUS-RSS-P Rack Mount Sliding Rail Kit for Fusion R400Q (17.5-21" rack)
Fusion Rack Slide Set (23-26.5") FUS-RSS-S Rack Mount Sliding Rail Kit for Fusion R400Q (23-26.5" rack)
Fusion Rack Slide Set (27-30.5") FUS-RSS Rack Mount Sliding Rail Kit for Fusion R400Q (27-30.5" rack)
Fusion Rack Slide Set (29-32.5") FUS-RSS-L Rack Mount Sliding Rail Kit for Fusion R400Q (29-32.5" rack)

Expert Reviews Rating

Sonnet Fusion D400Q Review
"Whether you want to connect using USB 2, FireWire 400, the higher-speed FireWire 800, or eSATA (external SATA), this drive has what you need. You're unlikely to swap back and forth a lot, but it does mean that you can connect it to any machine you like. This is really best used with an eSata PCI card, as that's what will give you the best performance. But if you need to connect to another Mac using either flavour of FireWire or even USB, you're free to do so…

…The fan in the device was noticeable only in its silence; it was exceptionally quiet when in use, so it should do well in quiet offices. The Fusion D400Q is an excellent choice for anyone who needs high-speed data transfer, both in bursts and sustained streams."

Awards & Case Studies
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