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BUFFALO DriveStation DDR 2 TB USB 3.0 Hard Drive with DDR3 MegaCache Accelerator - HD-GD2.0U3

  • USB 3.0
  • Fanless Design
  • Easy Scheduled PC & MAC Backup
  • 3 Year Warranty
  • Email this page
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DriveStation DDR

DriveStation™ DDR
Ultra Fast USB 3.0 Hard Drive

Buffalo's DriveStation™ DDR is an easy to use, high performance USB 3.0 desktop hard drive that offers ultra fast transfer speeds, comparable to an SSD. Combining the high capacity of an HDD with 1GB of DRAM cache, DriveStation DDR provides SSD-like performance at an affordable price. With blazing fast transfer speeds up to 408Mbps, it is up to 2.3x faster than USB 3.0 and 10x faster than USB 2.0. Perfect for any PC or Mac®, it’s backward compatible with USB 2.0, and its unique chassis design can stand upright or lay flat for placement just about anywhere. DriveStation DDR is the perfect solution for easily expanding storage or backing up your computer with ultra fast file transfers.

  • 1-Drive
  • USB 3.0
  • 1GB of DRAM cache
  • Up to 2.3x faster than USB 3.0
DriveStation DDRDriveStation DDR
DriveStation DDRDriveStation DDR


Easy to Use Storage
With terabytes of storage, DriveStation DDR provides a reliable, easy to use storage for your PC and Mac computer. Quickly expand the capacity of your computer for your favorite music, photos, videos and more. The simple USB 3.0 interface offers plug and play setup and universal connectivity.


MegaCache Accelerator
DriveStation DDR includes a 1GB DRAM cache system to greatly accelerate file transfer performance - up to 2.3x faster! MegaCache Accelerator offers automatic enhancements with plug-and-play setup. There are no utilities or special software to install.


Unique Form Fits Anywhere
DriveStation DDR features a sleek, attractive chassis that can be positioned vertically or horizontally for efficient use of space. Stand it upright on your home office desktop or lay it flat below your TV as part of your media center.


Easy Scheduled Backup
DriveStation DDR is perfect for backing up your important files. Disaster and hard drive failures can occur unexpectedly; don't leave your important files and treasured memories in the hands of chance. Schedule regular backups for your PC with Buffalo Backup Utility or use Time Machine for your Mac. Protect all of your data, down to the last byte.


Buffalo Tools
Buffalo Tools is a feature-rich suite of optional software included on Buffalo DriveStation storage products. Any or all of the following components of Buffalo Tools may be installed on Windows® PCs.

  • Buffalo's Backup Utility is a featured backup software for Windows PCs and can be used to back up one or multiple computers with a single Buffalo external hard drive.
  • Eco Manager helps to conserve energy and reduce battery consumption by regulating the power usage of the hard drive.
  • TurboPC includes two components to enhance file transfer performance with external hard drives. It also includes TurboCopy which provides additional system adjustments to increase performance substantially.
  • SecureLock software for Windows® provides complete control of the data encryption on your Buffalo external hard drive, providing password protection and software data encryption.

DriveStation DDR

DriveStation DDR

MegaCache Accelerator Transfers up to 2.3x Faster!

DriveStation DDR utilizes 1GB of fast DDR3 RAM to automatically cache data as it is transferred and greatly accelerate overall performance.
DriveStation DDRDriveStation DDR
Internal Hard Drives
Number of Drives 1
Drive Interface SATA 3GBps
Hard Drive Capacities 2TB, 3TB
USB Interface
Standard Compliance USB 3.0 / 2.0
Connector Type Type A
Number of Ports 1
Data Transfer Rates Max: 5GBps* (USB 3.0)
Max: 480Mbps (USB 2.0)
Dimensions (W x H x D) 1.8 x 5.0 x 8.0 inches
Weight 2.2lbs
Operating Environment 41 - 95°
Power Consumption Max. 18W
Power Supply AC 100 ~ 240V, 50 / 60Hz
Client OS Support Windows® 8 (32-bit/64-bit), Windows® 7 (32-bit/64-bit), Windows Vista® (32-bit/64-bit), Windows® XP, Mac OS® X 10.5 or later*†
*The HDD default format is NTFS; to work with Mac, reformat the HDD using Mac Disk Utility.
†Only basic external hard drive functionality is supported with this operating system; some included utilities may not work.

DriveStation DDR
  1. DriveStation DDR HD-GDU3
  2. USB 3.0 Cable
  3. AC Adapter
  4. Quick-Setup Guide
  5. Warranty Statement

Learn more about the Buffalo Technology HD-GD2.0U3

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Buffalo Technology HD-GD2.0U3

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  • Josh P.
  • 8/8/2014 9:31:35 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsWorked great!... until it didn't

Pros: Good value, tough box, good customer service

Cons: This drive worked great for me for exactly one month. Then one day it decided it didn't want to be recognized by my computer. After going through all possible remedies,we (me and the only customer support guy working at 11 PM) decided it was a defective unit. Data recovery, to the tune of $700-$1000, was not justifiable. So I'm losing a month of photos. But Buffalo customer support was nice and they are replacing the drive. I really hope it doesn't happen again, and will from now on back up my info more than once a month!

Did you find this review helpful? Yes No

  • Jeremy C.
  • 5/4/2014 1:53:25 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

1 out of 5 eggsBuyer Beware!

Pros: Fast transfer speed

Cons: Dead after two months of desk use!

Other Thoughts: It started with me having to unplug and re-plug the power cable a couple of times to get the PC to recognize it. I could feel the drive spinning inside, but the PC will not recognize the device. Now, when I plug it in a window pops up stating that Windows not recognize the USB device...awesome!

1 out of 2 people found this review helpful. Did you? Yes No

  • michael k.
  • 2/25/2014 4:44:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood gracious this thing is fast

Pros: I purchased this as a drive that i could pull games off of quickly and man has it delivered!

Cons: the 2 tb drive is a 5400rpm segate hdd. it is a good internal HDD but i ran out of space rather quickly. buffalo uses 5400 rpm drives that max out at 3tb.

Other Thoughts: I ended up swapping the 2tb drive inside the case and replacing it with a 4tb wd black 7200 rpm drive. i am now achieving 440 READ and 350 WRITES! Amazing in my book.

3 out of 4 people found this review helpful. Did you? Yes No

5 out of 5 eggsNeed external storage? Consider this

Pros: In a few words -- large capacity, fast, solid construction, and reasonable cost.
Plug it in and you're ready to go.
If it fits your needs, you should put it on your short list.

Cons: Due to my physical setup, I would like a longer USB3 connection cable.
Stands up so easily knocked over but don't see why you can't lay it down.

Other Thoughts: Comparison of the HD-GD2.OU3 to a couple other devices I have shows (I won't bore you with all the numbers) it is
- a factor of 2 times faster (both sequential and random read/writes) USB3 Corsair flash drive (thumb drive)
- some times faster and other times slower (on order of 50-75%) compared in an internal M4CT128 SSD using USB3 connection.
Bottom line --- vVERY good performance.

1 out of 1 people found this review helpful. Did you? Yes No

5 out of 5 eggsReally fast drive, ideal for a portable, performance data store

Pros: Fastest drive in the fleet, nice look with subdued LEDs, lightweight plastic case dissipates heat, silent (no fans), stellar Random read/write speeds

Cons: Minor cons: Quite bulky with space for a fan but no benefit of one, plastic case seems more equipped for sitting on a desktop than for durability/portability, black “satin” finish shows fingerprints pretty easy

Other Thoughts: I’ll start off by saying that my only previous experience with Buffalo has been their value-priced routers, which were pretty reliable and lasted a good, long time. As mentioned in the title and the Pros section, this is a fast drive! In CrystalDiskMark, using the USB 3.0 interface, it scored 245-256-226-255 (SeqRead=245MB/s, SeqWrite=256MB/s, RandomRead 512KB=226MB/s, RandomWrite 512KB=255MB/s). That squashes my next fastest USB 3.0 drive (A Seagate 3TB Backup Plus) which scored 125-123-49-75, which in turn easily beat my fastest eSata 2TB external drive setup by 30%. But, those were all empty drive stats and, frankly, who uses an empty drive?! As part of this testing, I put data on the drive and re-tested. I started with 300GB and then bumped it up to a full terabyte (so well over half full) and, with both amounts, I had almost identical outcomes. So, with 1TB of the typical data I store, this brought the scores down a bit to 213-246-212-243. Down from super-awesome, however, is still awesome! Note: the Random read/write speeds are on par with the Sequential Read/Write speeds, which I haven’t ever seen! In addition to the straight-up speed increases on the sequential reads, this seems to be the real strength of this drive. Knowing this, I believe the best possible use for this drive would be a situation where the user needed a portable/external data store that performs similar an internal drive would be a good utilization scenario. Sure, it would do fine as a backup drive, but is quite pricy for that purpose, as you can get double the storage space for less money. That’s my take on it… In conclusion, if it were possible to dock it a half an egg, I would do so for the bulkiness, but as I cannot, I will give it the full five. I love new tech and especially love it when it does what it says it will do!

1 out of 1 people found this review helpful. Did you? Yes No

4 out of 5 eggsGreat product

Pros: Lighting fast, great memory, easy to use, great setup

Cons: Nothing really!

Other Thoughts: You need speed?? Get this drive....
I just want to make something clear right now -- this drive reads and writes incredibly fast, IF you use it correctly. That means you need to have it connected to a USB3 port, and you need to keep the caching feature in the software on. As long as you keep those requirements in mind - this drive is amazing.

1 out of 1 people found this review helpful. Did you? Yes No

4 out of 5 eggsFast and quiet drive, cache may be of limited value

Pros: Installation was easy. Like any modern USB drive, I plugged it in and it just worked. The computer recognized it as a 1.81 TB NTFS disk (2,000,298,872,576 bytes, or a hair over 2 TB using the drive manufacturers' power-of-ten definition of GB and TB).

Newegg states a 1 year warranty but the printed documentation says it's 3 years, which is good.

It is very quiet at idle or in use. Compared to my desktop it's essentially inaudible.

I exercised this drive over five days including a full disk test and truecrypt encryption (26 hours each). During this time there were no problems and the drive operated reliably with consistent performance.

Over USB 2.0 (yes, it's time for an upgrade) HD Tune reported 20.3 MB/s average throughput and 12.9 ms access.

Unexpectedly, I found the performance best with files larger than the stated 1 GB cache, with one exception:

10 GB file -- write 21.2 MB/s, read 24.2 MB/s.
1.25 GB file -- write 18.4 MB/s, read 20.2 MB/s (in this case the 1 GB cache should have helped dramatically).
Here is where it gets interesting:
0.5 GB file -- write 16.5 MB/s, read 46.5 MB/s (no disk activity indicated), second read 17.7 MB/s, third read 17.9 MB/s

The result I observed with the 0.5 GB file, where the first read after a write was very fast with no disk activity, and subsequent reads were normal speed with disk activity, was completely repeatable.

All performance measurements were made prior to TrueCrypt encryption.

Cons: I only observed the cache in obvious use in one scenario, when reading back a file smaller than 1 GB immediately after writing it, and only the first time this file was read. That's unexpected and it's difficult to understand why that would be the case. I can understand not caching the writes to preserve data integrity in case of power loss, but discarding the cache contents after a read makes no sense to me.

The plastic case feels thin and a little cheap. It's fine for stationary use but I'd think twice about hauling it around without some kind of a protective case.

Other Thoughts: Like many external drives these days, there is no power switch. It will spin up when the computer wakes up and spin down when the computer hibernates or powers off.

There is no fan and the plastic case gets a little warm to the touch. I measured 33 degrees C on the case exterior with the drive idling and 38 degrees C with the drive in use.

Newegg lists this as “USB 2.0 | eSATA | FW400 | FW800” which is incorrect. There's a single USB 3.0 connector (backward compatible to 2.0 of course).

This drive was a solid performer but currently it's 30% more expensive than other models that lack the 1 GB cache. I would be a little disappointed to pay that premium and not see more benefit from the cache.

1 out of 1 people found this review helpful. Did you? Yes No

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