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Mercury Elite Pro Dual is the best dual-drive hardware RAID solution for creative workflows, project archives, and system backups where reliability and versatile performance count. With two fast hard drives, easily configured in multiple RAID modes at the flick of an easy-access switch, Mercury Elite Pro Dual is built to seamlessly integrate with any work environment from high demand production studios to your home office.
The Hardware RAID Workhorse
Reliable hardware RAID maximizes the full potential of two 3.5" 7200RPM hard drives in the Mercury Elite Pro Dual. It comes configured in high-speed RAID 0 mode for the maximum sustained throughput from your drives. With speeds up to 407MB/s, that's fast enough for HD video workflows. Configure the Mercury Elite Pro Dual in RAID 1 mode for the extra security of mirrored data, set up a span of the two drives, or use them independently.
Performance by Design
Mercury Elite Pro Dual features both high-speed USB 3.1 Gen 1 & eSATA ports to offer the connectivity and versatility to work with your current equipment at extreme speeds. A second-generation, free-flowing brushed-aluminum chassis with high-performance fan delivers cool, quiet operation. In addition, drive-activity LEDs give you an instant snapshot of the status of your RAID, and intelligent power management conserves energy and reduces wear by automatically spinning down the drives when inactive.
Support You Can Trust
Like all OWC products, Mercury Elite Pro Dual is built to the highest standards from design to delivery. Each unit undergoes rigorous lab testing for exceptional performance and reliability. It's also always fully backed by a comprehensive warranty and our legendary US-based customer support team.
Hardware RAID 0, 1, span, and independent modes
Fast USB 3.1 Gen 1 & eSATA connectivity
Accelerate your workflow with transfer speeds up to 407MB/s
Second-generation aluminum design with low-decibel cooling fan
1. Booting in RAID 0, RAID 1, and SPAN mode are supported via both eSATA and USB.
2. When connected via USB, the following limitations apply when booting in Independent mode: only the disk connected to Port 1 is bootable when both drives are installed. If only one drive is installed, the disk will boot regardless of which port it is connected to. Please check the Assembly Manual & User Guide for more details.
3. When connected via eSATA, booting in Independent mode is not supported.
4. Not compatible with the following Seagate drive: Seagate ST8000NM0055, part number 1RM112-102, AND firmware version PN02. Please note that drives with the same model number but different firmware DO work correctly.
Manufacturer provided specifications for Other World Computing p/n MED3ER0GB UPC#: 812437023718
OWC Mercury Elite Pro Dual high performance enclosure
0.6 meter (24 in) USB 3.1 Gen 1 Cable (Standard-A to Standard-B)
Reviewer: FizzleEditorLocation: Long Island, NYAge: 45-54Experience Level: Power UserOwned Product: 1-3 months
Rating: 5/5Excellent, Fast & AffordableJanuary 31, 2019OWC / Other World Computing Mercury Elite Pro Dual 6TB 2-Bay USB 3.1 Gen 1 RAID Array (2 x 3TB)
Purchased this to use on my Windows 10 computer at home. Works like a charm. Using it in RAID 0 mode for video editing. Spins up very quickly. Very quiet too, not hearing any high-pitched noise from the fan that some people are reporting. Using the eSATA connection via a SATA-eSATA bracket which allows me to connect directly to the motherboard's SATA port. Read/write speeds are very good, much better than USB 3.
Only complaint I have, which others have as well, is that the lights are WAY too bright. I plan on opening the case up and taping some ND gel to the inside in front of the lights to darken them a bit.
Highly recommend this external drive enclosure for those looking for more drive space with quick read/write speeds.
Reviewer: Candids100Location: Vancouver, CanadaAge: Over 65Experience Level: Power UserOwned Product: less than a month
Rating: 5/5I am so pleasedApril 12, 2018There was an issue with this drive - it kept on ejecting from my iMac Pro but a call to your support team and the problem was solved. The drive is super fast and I just love it. It is exactly what I wanted and better yet expected. This is why I buy from OWC. I would recommend this item to a friend!This review is from 4.0TB OWC Mercury Elite Pro Dual RAID 7200RPM Storage Solution with USB 3.1 Gen 1 + eSATA.Customer Videos:
Reviewer: JakeRichLocation: Winchester, VAAge: Over 65Experience Level: IT ProfessionalOwned Product: 1-3 months
Rating: 5/5Great Raid enclosureApril 8, 2018I was looking for an enclosure for two identical bare drives and saw this one. I ordered it and it came in a few days. Popped in the empty drives, set it for RAID1, powered it on and in a few seconds it was ready to go. Attached to my MBP via USB3 and put it in service. It's been brilliant in operations, with a simple set of lights on the front to tell you about the stats of the drives. The LEDs are a bit bright, so I've turned the drive to one side to avoid having them directly in my eyes. The cooling fan is also audible above the quiet of my office, but I've put an old mouse pad under the feet and the noise is less noticeable. Other reviews have referred to the noise, but it isn't intolerable, just louder than anything else in the setup. I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: EmilioLocation: Los Angeles, CAAge: 35-44Experience Level: Power UserOwned Product: 1-3 months
Rating: 5/5Great enclosure to revive spare drivesMarch 25, 2018I bought this to turn two 3TB G-Tech drives that were collecting dust into a 6TB RAID 0 drive that I can use to edit off of. So far it's worked wonders. Great quality enclosure and I'm happy with the sturdy quality of the enclosed cables. I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: PlacekLocation: Midcoast, MaineAge: Over 65Experience Level: Home UserOwned Product: less than a month
Rating: 5/5Quality enclosure; many RAID choices.March 21, 2018I chose this enclosure to house a pair of drives I wanted to mount independently, and it will do that, however I could easily chosen one of three RAID options via the switch on the back. The quality of the machined aluminum enclosure is a rarity in these days of plastic. I have it hooked up to a USB 3.0 PCI card on my MacPro, but will probably hook it up to eSata if a port frees up. Very pleased. I would recommend this item to a friend!Customer Videos:
Reviewer: JetjockLocation: IllinoisAge: Over 65Experience Level: Power UserOwned Product: 1-3 months
Rating: 5/5Quiet and fastMarch 3, 2018I purchased this enclosure to set up a mirror RAID as a second backup for my digital photo files. I installed a pair of 4Tb HGST drives. It is very quiet in operation and with my eSATA connection on my old, upgraded MacPro, is very fast to handle these big files. Recommended. I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: MelonheadLocation: NZAge: 55-65Experience Level: Power UserOwned Product: over 6 months
Rating: 5/5meets my needs easily and quicklyNovember 26, 2017Have installed two enterprise 3 TB drives and the unit is functioning as expected. Fan is a little noisier than I anticipated but that may only be a result of using it in a quiet office on a glass desk. High quality packaging and fast shipping as one would expect from OWC. I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: videoartistLocation: seattle, waAge: Over 65Experience Level: Power UserOwned Product: 3-4 months
Rating: 5/5work's like a charmMarch 26, 2017My buying experience at OWC has be really good. I've had questions and concerns that over the years they have been responsive to and very helpful with. My latest purchase, this 6TB external drive has worked like a charm out of the box. It's speed is eye opening. I'd buy it again if I needed more storage. Great place to buy with great support. I would recommend this item to a friend!This review is from 6.0TB OWC Mercury Elite Pro Dual RAID 7200RPM Storage Solution with USB 3.1 Gen 1 + eSATA.Customer Videos:
Verified BuyerTop 250 Contributor
Reviewer: eanbadeanLocation: Boston, MAAge: 55-65Experience Level: IT ProfessionalOwned Product: less than a month
Rating: 5/5Nice, cheap RAID enclosureMarch 15, 2017Easy to set up hardware RAID. The only thing I'd like to see is the instructions for changing the RAID setting printed on the enclosure somewhere as I'll never remember them and have to look it up on the website or save the instruction pamphlet. It's a sequence of a mode selector, power and a reset button--and I've already forgotten it. Most users will probably set it once and never need to change it, so maybe it's just me. I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: OrenwolfLocation: Toronto, CanadaAge: 35-44Experience Level: IT ProfessionalOwned Product: less than a month
Rating: 4/5Great case!December 22, 2016Great, well-built case. I purchased it with no drives. Adding the drives was a little annoying because the rubber feet included by the screw-holes on the case wanted to slide around with pressure, so it took some finagling to get them in. Once they were in, though, reassembly was a snap and had no further issues.
Only negative I can see is the lack of management software - there's no way to query individual drive SMART status, for example, even with an included tool or open source software like smartctl.
Reviewer: mordicaiLocation: San DiegoAge: Over 65Experience Level: Power UserOwned Product: over 6 months
Rating: 5/5OWC STANDARD FAREDecember 15, 2016Delivered in a three days FREE; Hard drives installed in 15 minutes; Works the way its supposed to; Iooks cool. I like it, but then I've been using OWC Drives for eleven years with no problems. Oh oh, I've just jinked myself,,,,, I would recommend this item to a friend!This review is from OWC Mercury Elite Pro Dual RAID USB 3.1 / eSATA Enclosure Kit.Customer Videos:
Reviewer: RaylucaLocation: Hannibal, MissouriAge: 55-65Experience Level: Power UserOwned Product: less than a month
OWCMercury Elite Pro Dual Performance RAID EnclosureMfr P/N: MED3ER0GBOWC SKU: OWCMED3ER0GBOBDual bay USB 3.1 Gen 1 and eSATA equipped performance RAID enclosure1 Year OWC Limited WarrantyShips: Same Day