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OWC Rack Pro/Desktop 4-Bay Serial ATA/SAS Drive RAID-Ready Enclosure

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In stock at supplier: Yes

Leaves our warehouse in approximately 1-2 weeks

Shipping cost is $9.90 (flat rate) for any size order.
This product is covered by an Australian Replacement Warranty.
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Product code: OWCMRP1UMSAS

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Cconnects via mini-SAS 6G(4-Channel) Interface.

Your price: $857.99

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OWC Mercury Rack Pro

0GB 1U 4 Bay
Rack Storage Solution Kit

External mini-SAS / Mac / PC
OWC affordability, reliability, and ease of use in a single 1U rack space.
Need massive amounts of storage?
The OWC Mercury Rack Pro Storage Solution is a four bay external mini-SAS hard drive enclosure configured as four independent hard drives, up to a maximum capacity of 16.0TB (4.0TB per hard drive mechanism). 

The OWC Mercury Rack Pro features a single external mini-SAS interface, to not only reduce cable clutter, but to provide four full channels of data (one per drive) through a single external mini-SAS cable.  It's like having four separate eSATA/SAS cables but in a single package.

Designed specifically to meet the demands of server, audio production, and video production environments, the OWC Mercury Rack Pro four Bay 1U Solutions provide data transfer rates of up to 24Gb/s data rates¹! Using the highest capacity SATA hard drive mechanisms available, and offering Plug & Play simplicity, the possibilities are endless! 

Note: OWC Mercury Rack Pro solutions do not include rack rails. If rails are required for your rack setup, Macfixit has them available. Click Here.
Outstanding Features
Great Performance
Using the fastest SATA drive mechanisms available gives the OWC Mercury Rack Pro mini-SAS 4 Bay 1 U Solutions a solid, performance focused base.  Adding a high-speed external mini-SAS card (not included) further enhances the OWC Mercury Rack Pro providing  some of the fastest drive transfer rates possible, up to 24Gb/s¹!
High Reliability
A Top-Notch design using the best components gives the OWC Mercury Rack Pro an industry leading one year warranty and ensures the series is built to last!
Flexible Form
The OWC Mercury Rack Pro can easily be converted to a desktop form-factor via a Phillips screwdriver by simply removing the rack ears and installing the included anti-skid, vibration dampening feet.


  • OWC Mercury Rack Pro 4 Bay 1U Storage Solution
  • Integrated ROHS, CE, and FCC compliant Power Supply
  • Rack Mounting Handles
  • Anti-skid, Vibration Dampening Desktop Mounting Feet
  • Screws for Rack / Desktop Conversion
  • OWC Mercury Rack Pro mini-SAS Manual (7.5MB PDF)
  • OWC 1 Year Solution Warranty with 48-Hour Turnaround Time

Product Specifications:

Interfaces Supported

  • Unit provides one (1) External mini-SAS, supporting up to 24Gb/s
  • Enclosure uses 3.5" Serial ATA (SATA) hard drives

RAID / JBOD Support

  • RAID-Ready ² and JBOD; 4 independent drive channels

Drive Rotation Speed

  • Varies with drive mechanisms installed

Drive Cache Size

  • Varies with drive mechanisms installed

Not Recommended Hard Drives

  • Seagate Barracuda 7200.11 series- all models, particularly the 1.5TB 7200RPM model p/n ST31500341AS due to stability and performance concerns.
  • Western Digital Green drives - all models, due to potential critical operational issues attributed to the IntelliPower technology providing inconsistent variable transfer rates.

Port Configuration

  • external mini-SAS up to 24Gb/s


  • Pre-formatted for Mac OSX 

Max Data Transfer Rate

  • external mini-SAS - up to 24Gb/s (or 2400 MB/sec)

Recommended mini-SAS Connecting Cables

  • When using Passive/passthrough mini-SAS storage solutions equipped with "6G" 6Gb/s (SATA 3.0 Revision) drives, we strongly recommend only using connecting cables of 1 meter or shorter length due to the increased signal integrity requirements of 6G drives. Active storage solutions such as SAS expander systems equipped with 6G drives can utilize mini-SAS connecting cables up to 10 meters in length.


  • Three (3) 4cm Brushless, whisper quiet, constant speed fans

Power Supply

  • UL Listed U.S./International Adjustable 100 ~ 240v, 50/60Hz, 200W (Max.) input Power Supply (adapter plugs for International use sold separately).

External Case Dimensions

  • 11.9"(D) x 17.3"(W) x 1.7"(H)
  • 30.3cm x 44cm x 4.5cm
  • 11.9"(D) x 17.3"(W) x 2.2"(H) (with feet)
  • 30.3cm x 44cm x 5.5cm (with feet)
  • 11.9"D) x 19.2"(W) x 1.7"(H) (with rack mounting handles)
  • 30.3cm x 48.7cm x 4.5cm (with rack mounting handles)

Enclosure Weight (no accessories)

  • Approximately 10 lbs. (4.5kg)

Product Manual

Macintosh System Requirements

  • Mini-SAS cable sold separately: 1M mini-SAS cable is required for use with SATA/SAS 6Gb/s drives due to signal integrity requirements, longer cable lengths are not supported. When using SATA/SAS 3Gb/s drives, longer cable lengths can be used
  • external mini-SAS: Macintosh with external mini-SAS via 3rd party controller card interface, (not included). external mini-SAS requires Mac OS X 10.2 or later. Including ‘Lion’ 10.7.x.
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Mini-SAS cable sold separately: 1M mini-SAS cable is required for use with SATA/SAS 6Gb/s drives due to signal integrity requirements, longer cable lengths are not supported. When using SATA/SAS 3Gb/s drives, longer cable lengths can be used.
  • external mini-SAS: Windows with external mini-SAS via 3rd party controller card interface, (not included). external mini-SAS requires Microsoft Windows 2000 or XP.

Operating Environment:


  • Varies with drive mechanisms installed

Relative Humidity

  • Varies with drive mechanisms installed


  • Varies with drive mechanisms installed


  • Varies with drive mechanisms installed


OWC/Macfixit Australia 1 Year Replacement Solution Warranty

The best warranty is one you never have to use, but should the need occur – OWC is proud to provide a superior level of support and warranty coverage to our customers. Even when not used, we understand the peace of mind afforded by a longer warranty period. OWC's industry leading coverage is a testament to our confidence in the reliability of the solutions that we offer. OWC solutions are engineered to demanding quality standards in order to deliver the most reliable, highest performance available on the market in each storage category.


Manufacturer provided specifications for Other World Computing p/n OWCMRP1UMSAS UPC#: 736211771254 

Additional Information

Colour Silver
Capacity Enclosure Only
Number of Bays/Drives 4
Type HDD
Model Identifier No
Connection SAS
Form Factor 3.5 inch
Manufacturer OWC
Manufacturer P/N OWCMRP1MSAS
Shipping Restriction N/A

Australian Owned Business 

Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.

Fast Flat Rate Shipping on all orders

Shipping cost is $9.90 (flat rate) for any size order. Express Options are available in cart/checkout. All in-stock orders are shipped the same day if received by 10.30 AM (Eastern Time Victoria). Orders received after 11:00 AM are shipped the following business day.

100% Satisfaction Guaranteed 

We fully guarantee all of our products. If for some reason you are not happy with any item you purchase from us you may return it for a refund (see Return Policy). 

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At Macfixit Australia) we’re 100% committed to serving our customers. We check phone and e-mail messages throughout the day and, in most cases we respond within minutes of receiving them. Please feel free to contact our Customer Service Department with any questions at 03 9329 4343 Mon-Fri, 10am to 5.30pm (Melbourme, Victoria Time), or e-mail us under this link.