OWC Mercury Elite Pro DualFrom real comments

Verdict distilled from 16 mentions across 10 aspects in comments under product review videos.

Positive sentiment57%
PROS 57%
CONS 43%

Rank based on 16 mentions across 10 aspects

View the verdict as

Buy this if...

  • You want a compact dual-bay RAID enclosure that can run bus-powered without a separate power supply
  • You value being able to pull drives out and read them elsewhere if the enclosure fails
  • You want an enclosure that's easy to open and service yourself

What users love

Skip this if...

  • You're sensitive to noise, since some 3.5in HDD setups report constant audible drive activity
  • You're concerned about heat buildup during extended use
  • You need RAID 1 to double read speeds across both drives

What users complain about

Compare in seconds

Based on user comments

Best choice
1Mid
Synology DS220
Easy setup and intuitive DSM software
Synology DS220
Easy setup and intuitive DSM software
2Mid
Ugreen DH4300
Easy setup for beginners
Ugreen DH4300
Easy setup for beginners
3Mid
Synology DS920
Long-term reliabilityNetworking speed beyond 1GbpsPlex and media handling improved by SSD cacheFan noiseCPU thermal and virtualization limitsMixed value of RAM/SSD upgrades for basic use
Synology DS920
Long-term reliability
Networking speed beyond 1Gbps
Plex and media handling improved by SSD cache
Fan noise
CPU thermal and virtualization limits
Mixed value of RAM/SSD upgrades for basic use
4Premium
Synology DS1821
Expandable storage capacityReliability and data recoveryEase of use / DSM interfaceDrive compatibility alerts and vendor lock-inWeak Plex transcodingExpensive proprietary RAM
Synology DS1821
Expandable storage capacity
Reliability and data recovery
Ease of use / DSM interface
Drive compatibility alerts and vendor lock-in
Weak Plex transcoding
Expensive proprietary RAM
You are here
5
OWC Mercury Elite Pro Dual
Bus-Powered FlexibilityCompact, Portable DesignDrives Readable If Enclosure FailsNoisy Drive ActivityAbrupt Unmount SoundRAID 1 Doesn't Boost Read Speed
OWC Mercury Elite Pro Dual
Bus-Powered Flexibility
Compact, Portable Design
Drives Readable If Enclosure Fails
Noisy Drive Activity
Abrupt Unmount Sound
RAID 1 Doesn't Boost Read Speed
Best value
6Budget
Synology DS118
Sufficient for backups, streaming, and surveillanceEasy setup for beginnersGood value versus higher-tier modelsNo drive redundancyConfusing entry-level lineup overlapMissing vibration dampers
Synology DS118
Sufficient for backups, streaming, and surveillance
Easy setup for beginners
Good value versus higher-tier models
No drive redundancy
Confusing entry-level lineup overlap
Missing vibration dampers
7Mid
Synology DS923
Great for Time Machine and photo backupLong-term reliabilitySolid upgrade from older/competing NASRAID is not a backupDrive/component lock-in and costNoise and power draw
Synology DS923
Great for Time Machine and photo backup
Long-term reliability
Solid upgrade from older/competing NAS
RAID is not a backup
Drive/component lock-in and cost
Noise and power draw
8Mid
Ugreen DXP6800 Pro
Dual 10GbE and Thunderbolt connectivityStrong hardware for the priceExpandable and third-party OS friendlySoftware stability issuesFan noise at idleNVMe/PCIe lane limitations
Ugreen DXP6800 Pro
Dual 10GbE and Thunderbolt connectivity
Strong hardware for the price
Expandable and third-party OS friendly
Software stability issues
Fan noise at idle
NVMe/PCIe lane limitations
9Premium
Ugreen DXP6800
Flexible RAID and third-party OS supportStrong hardware specs vs competitorsCapable for video editing workflowsInconsistent idle fan noiseUGOS software immaturityReal-world transfer speed issues
Ugreen DXP6800
Flexible RAID and third-party OS support
Strong hardware specs vs competitors
Capable for video editing workflows
Inconsistent idle fan noise
UGOS software immaturity
Real-world transfer speed issues
10Premium
Synology DS1621+
Highly expandable hardwareHigh throughput with 10GbE and cacheStrong VM and app supportNo hardware transcoding for 4KConfusing cache setup guidanceConsumer NVMe cache reliability risk
Synology DS1621+
Highly expandable hardware
High throughput with 10GbE and cache
Strong VM and app support
No hardware transcoding for 4K
Confusing cache setup guidance
Consumer NVMe cache reliability risk

Who wins on what

Ranked by what users actually praise

Overall Impression

Compact and flexible power options make it easy to use on the go. Multiple commenters highlight how small and portable the unit is, calling it a 'lovely little box' that's easy to bring along. Several note it appears to fire up as bus-powered over USB-C without needing the external power supply, though one clarifies the power cable isn't required specifically when connected via Thunderbolt rather than USB. This flexibility appeals to users who want a compact backup solution they can plug in anywhere without extra cables, making it convenient for on-the-go workflows and desk setups alike.

Removable drives offer peace of mind for backup and data recovery. Users repeatedly ask what happens if the enclosure itself dies, and reviewers note the drives remain readable elsewhere since the data isn't proprietary. One commenter switching from a 64TB Synology setup says being able to pull drives and use them in any device makes RAID mirroring feel like a genuinely safe backup method. A content creator separately describes the review as valuable education on avoiding data loss from failed drives, reinforcing why this recoverability matters for people protecting irreplaceable footage.

Noise and heat during sustained RAID use are recurring complaints. Several owners running two 3.5in hard drives report the unit is noisier than expected, with one buyer calling it 'a little noisy, constantly reading hard drive' and others specifically asking about noise levels before purchasing. One commenter also flags that the device 'gets very hot after a time,' calling it a little concerning, while another describes an unusually abrupt, loud sound when unmounting a drive compared to other enclosures they've used.

Outdated / Not-accurate data?