TerraMaster D2-310 USB RAID enclosure: Rugged chassis and a solid performer

The TerraMaster D2-310 lets you DIY your own USB 3.1 10Gbps RAID enclosure.

IDG

IDG

TerraMaster's D2-310 RAID enclosure is a two-bay, USB 3.1 Gen 2 (10Gbps) box that’s extremely similar in appearance to the company's fast F2-220 NAS. In fact, it’s pretty much the same box with a different backplate and logic board. As direct-attached, USB storage options go, this one is rugged and pretty fast, though still with some shortcomings.

Design and specs

Like its F2-220 cousin, silvery D2-310 is built like a brick outhouse, with real metal and a wide stance, making it difficult to knock over. That’s important when you have two rapidly spinning, rather fragile 3.5-inch hard drives inside. It’s also capable of housing 2.5-inch drives. Drives are installed and swapped using sliding trays, but there are no locks on the bay doors—the D2-310 isn’t for theft-prone areas.

d2 310 4 TerraMaster

There’s not a lot to see on the back of the D2-310, just the disk mode switch, power jack, and Kensington lock port. A rather large, but very quiet fan keeps things cool.

On the back of the D2-310 is a micro-rotary switch that selects the RAID or non-RAID mode of operation. RAID 0 and 1 are available, as well as JBOD (concatenated storage in this case), and separate volumes—i.e., two separate drive letters. That’s about it, aside from the reset button, power jack and orientation-neutral Type-C port. TerraMaster includes a Type-C to Type-A cable. You’re on your own for Type-C to Type-C.

Performance

We tested the D2-310 and its ASMedia ASM1352R-Fast controller with a pair of Seagate 1TB, ES.2 hard drives, as well as a pair of OCZ Trion 150 MLC SSDs, to get a better handle on its possible top speed. With hard drives, the unit managed 230MBps reading and 228MBps writing, just about double the speed of the drives when they were tested individually. That’s as good as you’ll get with any product. Our only other RAID 0 tests have been with units sporting faster hard drives, so we ended the comparison there.

raid vs. hard drive 20gb copies PCWorld

Running two Seagate ES.2 hard drives in the D2-310 in RAID 0 almost doubles their performance in some cases.

raid vs. hard drive PCWorld

CrystalDiskMark shows a vast increase in performance when doubling up the Seagate ES.2 hard drives in the D2-310’s RAID 0 (striped) mode.

With the 2.5-inch SSDs, the the D2-310 performed slightly slower than AFT’s Blackbird VX-2SSD enclosure, reading at 519MBps and writing at 741MBps, compared to 591MBps and 791MBps for the competition. But combining 2.5-inch drives, especially SSDs, is the VX-2SSD’s raison d’etre, and it can’t handle 3.5-inch hard drives. In other words, the comparison is enlightening, but not entirely fair.

Note that we tested the D2-310 in all four storage modes, and it was very quick to reorient itself. Power the unit off, rotate the switch, press the reset button with the supplied tool, and we were good to go in mere seconds. 

Conclusion

For leveraging a pair of hard drives or SSDs into faster external storage, or a mirrored backup device, the D2-310 is a great choice. At around $160 on Amazon, it’s not exactly what we’d call inexpensive, but it’s extremely well built, quiet, and looks good on your desk. Very good, as a matter of fact.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jon L. Jacobi

PC World (US online)
Show Comments

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?