OWC

OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure

Name: OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure with eSATA and USB 3.2 for Dual 3.5 inch HDD's, External Hard Drive Enclsoure for MAC and PC
Brand: OWC
SKU: B06XVKQ4HT

Status: OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure… (12TB hard drive): Unavailable on Amazon as of 2026-10-18 10:20 UTC. Closest in-stock match (same 12TB hard drive): Seagate IronWolf 12TB, $429.99 on Amazon as of 2026-10-21 12:15 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $429.99 🛒 Search eBay for this model

Bottom line: The OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure: Four RAID modes (0, 1, SPAN, JBOD) switchable via an external hardware switch; main trade-off: RAID 0 default gives zero redundancy until you switch modes and rebuild.

Unavailable on Amazon as of 2026-10-18 10:20 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 12TB hard drive: Seagate IronWolf 12TB — $429.99 on Amazon as of 2026-10-21 12:15 UTC (price may vary).

View Current Price — $429.99

Same 12TB hard drive: Seagate IronWolf Pro 12TB NAS Internal Hard… — $644.45 on Amazon as of 2026-10-21 10:15 UTC (price may vary).

View Current Price — $644.45

Same 12TB hard drive: HGST - WD Ultrastar DC HC520 HDD — $339.49 on Amazon as of 2026-10-21 04:20 UTC (price may vary).

View Current Price — $339.49

Original listing (currently unavailable) → Compare to similar external storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Four RAID modes (0, 1, SPAN, JBOD) switchable via an external hardware switch
✓ Ships pre-set in RAID 0 for throughput up to 407MB/s, sized for HD video workflows
✓ Dual interfaces: USB 3.2 Gen 1 Type-B plus eSATA 6 Gb/s with port multiplier support
✓ Takes two 3.5-inch SATA 7200 RPM drives, 12TB total capacity out of the box
✓ Box includes USB-A to USB-B cable, 1M eSATA 6G cable, PSU and US power cable

Cons

✗ RAID 0 default gives zero redundancy until you switch modes and rebuild
✗ External power supply brick required, so no bus-powered portable use
✗ USB 3.2 Gen 1 caps at 5 Gb/s; eSATA is needed to reach the full 6 Gb/s

Manufacturer description

OWC Mercury Elite Pro Dual Professional Grade Solution. Performance RAID Solution with USB 3.1 Gen 1 & eSATA. 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. Reliable hardware RAID maximizes the full potential of two 3.5" 7200RPM hard drives in the Mercury Elite Pro Dual. It…

SpecPicks Verdict

SpecPicks scored OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. OWC's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Drive Bays - This 12TB dual bay enclosure supports two 3.5-inch SATA 7200 RPM hard drives, easily configurable in multiple RAID modes with a simple switch, making the Mercury Elite Pro Dual perfect for both high-demand production studios and home offices.
Hardware - The hard drive enclosure supports 4 RAID modes: RAID 0, RAID 1, SPAN, JBOD. The enclosure is pre-configured in high-speed RAID 0 mode for maximum throughput up to 407MB/s, ideal for HD video workflows. You can also switch to RAID 1 for mirrored data security, set up a span of the two drives, or use them independently.
Ports - This enclosure features a USB 3.2 Gen 1 Type-B port and an eSATA 6 Gb/s port that supports port multiplier functionality, ensuring versatile and high-speed connectivity options.
Transfer - USB 3.2 Gen 1 Up to 5 Gb/s (625 MB/s), USB 2.0: Up to 480 Mb/s, USB 1.1: Up to 12 Mb/s, eSATA Rev 3.x: Up to 6 Gb/s, eSATA Rev 2.x: Up to 3 Gb/s, eSATA Rev 1.x: Up to 1.5 Gb/s (187.5 MB/s).
Includes - (1) OWC Mercury Elite Pro 12TB Dual External Storage Enclosure, (1) 0.6M (24") USB-A to USB-B Cable, (1) 1.0M (39") eSATA 6G Cable, (1) External Power Supply, (1) US Power Cable, (1) Quick Start Guide, (1) Assembly Manual & User Guide, 1 Year OWC Limited Warranty.

Full Specifications

Brand	OWC
Color	Multicolor
Weight	6g
Material	Aluminum
Connectivity	USB
Model Number	OWCMED3ER7T12.0
Compatibility	PC, Switch, Mac
Built-In Media	OWC Mercury Elite Pro Dual high performance solution, 0.6 meter (24 in) USB 3.1 Gen 1 Cable (Standard-A to Standard-B), 1.0 meter (39 in) eSATA 6G Cable, External power supply and power cable
Mfr Part Number	MED3ER7T12.0
Hardware Platform	Universal
Compatible Devices	Desktop
Data Transfer Rate	407 Megabytes Per Second
Enclosure Material	Aluminum
Hardware Interface	USB 3.2 Gen 2, eSATA
Hard Disk Form Factor	3.5 Inches
Connectivity Technology	usb
Memory Storage Capacity	12 TB
Supported Devices Quantity	2
Full listing title	OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure with eSATA and USB 3.2 for Dual 3.5 inch HDD's, External Hard Drive Enclsoure for MAC and PC

Ready to buy?

Amazon shows no buyable offer for OWC Mercury Elite Pro 12TB 2 Bay RAID Enclosure… at the last check. The closest in-stock match with the same 12TB hard drive is Seagate IronWolf 12TB. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $429.99