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Drobo USB 3.0 4-Bay Storage Array (DDR3A21)

by Drobo
81 customer reviews
| 33 answered questions

List Price: $349.99
Price: $278.99 & FREE Shipping. Details
You Save: $71.00 (20%)
Only 1 left in stock.
Sold by North To South and Fulfilled by Amazon. Gift-wrap available.
Base Unit
  • Scalable desktop storage array
  • 1 x USB 3.0
  • Holds 4 x 3.5-Inch SATA HDD's for up to 24 TB
  • Award-winning BeyondRAID automated data protection
  • On-the-fly and instant capacity expansion
  • Battery-backed memory to protect against power interruptions
  • Desktop storage ideal for storing and backing up your data on a Mac or Windows based laptop or PC
  • Operating System Support: Mac OS X 10.7 or higher; Windows 8/8.1, Windows 7 (32 and 64 bit)
14 new from $278.99 2 used from $229.95
Warranty Information: This product comes with a 1 year warranty
$278.99 & FREE Shipping. Details Only 1 left in stock. Sold by North To South and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Drobo USB 3.0 4-Bay Storage Array (DDR3A21)
  • +
  • WD Red 4TB NAS Hard Drive: 1 to 8-bay RAID Hard Drive: 3.5-inch SATA 6 Gb/s, IntelliPower, 64MB Cache WD40EFRX
Total price: $427.99
Buy the selected items together

Special Offers and Product Promotions

Capacity: Base Unit

Product Description

Capacity:Base Unit

Drobo USB 3.0 4-Bay Storage Array (DDR3A21)

Drobo 4-Drive Storage Array, USB 3.0
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Drobo 4-Drive Storage Array, USB 3.0

This third generation of the Drobo is more affordable and features a completely new architecture making it more than 3x faster than the previous generation. More impressive, rebuild times are 4x faster delivering maximum data availability in the event of a drive failure. With the inclusion of battery backup technology, Drobo provides even more data protection in the face of an unplanned power outage.

The latest generation of the Drobo 4-bay holds true to the unique design and simplicity that has made Drobo the best desktop storage solution for storing and protection all your data. No storage expertise is required to ensure your data is always safe and protected. Best of all, your Drobo will be ultra quiet and look great on your desk.

Ultimate Investment Protection

Drobo takes upgradability to the next level. Not only can you upgrade capacity with no downtime by adding new drives or replacing smaller drives with larger ones, you can seamlessly upgrade to a new Drobo by simply removing the disk pack from your current system, and moving it to a new Drobo. Upgrading not only gives you an instant performance boost, but also delivers all the other benefits of the new Drobo.

All Your Stuff, Automatically Safe

Built on award-winning BeyondRAID technology with single or dual-drive redundancy, Drobo protects your data without any user interaction. Drives can be added or replaced on-the-fly for storage expansion with zero downtime. If you're running low on space, the lights on the front tell you what to do. Just add a drive in an empty slot or remove a smaller drive and replace it with a larger one.

Fast and Flexibility with USB 3.0

With USB 3.0 support, the latest generation of the original Drobo is more than 3x faster than the previous generation. Not only will accessing your data be fast, but rebuild times have improved by 4x in this generation giving you the peace of mind that your data will be fully protected as quickly as possible. USB 3.0 gives the maximum flexibility to be able to plug in to any Windows or Mac easily and start storing or backing up your valuable data within minutes.

Time Machine Backup Support

Pairing Time Machine with Drobo improves your data protection by ensuring your data is safe in the event of hard drive failure. Apple’s guidelines recommend allocating twice the capacity of the Mac’s hard drive for Time Machine. Time Machine users know that it will gradually use all available disk space without an easy way to stop this from happening. With Drobo you can easily control the maximum storage space available for Time Machine backups through Drobo Dashboard.

Power Protecting Your Critical Data

Drobo doesn’t just protect you from a drive failure, but also from potential data loss after a power outage. In every Drobo, we include battery backup technology that protects all data in memory or cache. When power spontaneously goes away, Drobo moves any in flight data to onboard flash in your Drobo so it will be protected and moved to your disk drives once power is restored. This ensures your important information is safe and sound. Even better, your battery recharges itself and is designed to last for the life of you Drobo.

Drobo 4-Drive Storage Array, USB 3.0
What's in the Box

Drobo Gen3, 6 ft (1.8 m) power cord with power supply, 6 ft (1.8 m), USB 3.0 cable Quick Start Card

Product Details

Capacity: Base Unit
  • Product Dimensions: 10.7 x 5 x 6.3 inches ; 6.7 pounds
  • Shipping Weight: 11.9 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00JLR8IZ2
  • Item model number: DDR3A21
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (81 customer reviews)
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at April 10, 2014

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

86 of 89 people found the following review helpful By Jaybean on June 17, 2014
Size: Base Unit
I own two 2nd-generation Drobo 4-bay devices, and I've definitely had a love-hate relationship with them. Both Drobos had to be replaced at one point because of issues with the Firewire connections. Fortunately Drobo's customer service did a good job of working with me (the second time around at least), but it was still a frustrating experience.

The biggest problem by far though with the first two generations of Drobos, and a constant source of frustration for me, was the speed of the devices, or the lack thereof to be more precise. Both of my Drobos were ridiculously slow for both write and read speeds. I quickly realized I would only be able to use them for backup and storage of music, photos, and video footage (and NEVER for video editing), and cringed every time I had to make a large file transfer to or from my Drobos.

Then I got an e-mail a month ago from B&H offering me $50 off a new 3rd-generation Drobo (since I was a previous Drobo purchaser), with the new Drobo claiming to have a new architecture three times faster than the last generation. I of course scoffed at this, remembering claims of increased speed in the 2nd-generation upgrade with the new Firewire connection, which never even came close to reaching the full potential of Firewire speeds (in fact the Firewire connection on my devices never surpassed USB 2.0 speeds). At the same time, I will admit I was a bit curious about the claims, and very much wanting them to be true.
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71 of 77 people found the following review helpful By J. Rasmussen on October 10, 2014
Size: Base Unit Verified Purchase
Update: Drobo finally confirmed both units were indeed faulty.
Completely unreliable and untimely support, plus only 90 day technical support, not 1 year. First off, I have been an IT professional for over two decades, and have personally set up and recommended many Drobos (from the standard Drobo to the Drobo Pro) for various businesses. The past Drobo units have worked exceptionally, but when I purchase the new Drobo 3rd generation for myself, it is nothing but failures.

The first unit would eventually be found to be dead on arrival. Out of the box it would refuse to connect, as other times it would connect, then disconnect randomly after a while. The same thing occurred on USB 3.0 as well as USB 2, and with different cables and USB 3.0 cards (as even Drobo says on their website it is picky in what USB 3.0 cards it likes). Even one card on their verified list was tried and had the exact same issues. Note that none of my other external drives, USB 3.0 or 2, had any such problems and always stayed connected. The Drobo even rejected a HDD I would later find was completely fine, passing all manufacturer's diagnostic tests and currently running flawlessly in another system. When the Drobo finally appeared to be running after many many hours of troubleshooting, data was copied to it. By the next day the Drobo drive was coming up as unformatted or showing as 'local disk', and even Drobo support verified all the data was gone and the only option was to reformat.

After much more troubleshooting with Drobo support over many days, they verified it was bad and I requested a brand new Drobo to be shipped to me overnight, which they did.
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The manufacturer commented on this review(What's this?)
Drobo says
October 15, 2014
Dear J. Rasmussenon
We are sorry for your experience and we would very much like to review your support case, would you responded to with the Support case number.

Thank You,
Drobo Customer Service
The manufacturer commented on the review below
21 of 22 people found the following review helpful By William Walsh on January 12, 2015
Size: Base Unit Verified Purchase
I would give this one star, but I have to give their tech support some credit, even if the email, wait, email, wait, method of dealing with them was tedious and time consuming. (Edit: After 2.5+ days without a reply from their tech support, I'm not even giving them credit for decent tech support anymore, lowered rating to one star).

However, after sending me 3 different firmwares to install, my device is still not working.

My take on this, is that the concept is great, but their implementation is lacking in stability for most offices. Bought this for a client's office, to provide for some data redundancy. Initial setup was fine, and went smoothly. But after a brief power outage the day of install, the system went into a reboot loop that never stopped. Without the drives in it, the Drobo software could detect it, and was able to install the firmware, but with the drives (even fresh ones) it would not recognize it and would go into a reboot loop.

I just dont think there is enough quality assurance behind the product at this point, and I would not recommend it at this stage. I'm waiting to hear back from Drobo support one more time, but I've expressed an interested in RMA'ing to Amazon as defective at this stage.

EDIT: Each day I've sent in an email, and no reply from Drobo tech support in 72 hours now. I called in earlier this morning, and was assured that the person I needed to talk to would call me back, and 6 hours later, no call. I shouldn't be surprised based on my experience with their customer support.

I will never recommend or use a Drobo product after this. This was my first and last purchase, and it has nothing to do with the quality of the product, I understand sometimes defective units go out.
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The manufacturer commented on this review(What's this?)
Drobo says
January 15, 2015
Dear William Walsh "WxW" ,
We would like to check on your case, would you forward your case number to so we can have the Support Manger review.

Thank You,
Drobo Customer Support

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