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Item#: N82E16816111194

SANS DIGITAL TowerRAID TR4U+B JBOD 4 x SATA 3.5" Drive Bays 4 Bay SATA to USB 3.0 JBOD Enclosure (Black)

  • SATA
  • 4 x SATA 3.5" Drive Bays
  • JBOD

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The TowerRAID TR4U+B is a 4-bay storage enclosure for high capacity storage needs. With a built-in ventilating protective screen front panel, both units utilize a cable-less backplane-design to support up to four hard drives. Connecting to the USB 3.0 slot for 5Gb/s performance, 4 hard drives can be accessed at the same time using a single USB 3.0 cable. Backwards compatible with USB 2.0, the TR4U+B provides expandable storage with ease. With support of the latest 3TB hard drives, the TR4U+B is capable of having a total of 12TB in a single tower. Hard drive cooling is provided by a large 3.15” cooling fan located on the back of the unit. Supported in PC, MAC and Linux, the TR4U+B is an ideal solution for your storage needs.

  • newegg Access Four Drives via One USB 3.0 Port The SANS DIGITAL TowerRAID TR4U+B can accommodate up to four 3.5" SATA hard drives (maximum 3TB per drive) and each drive can be accessed individually through a single USB 3.0 interface.
  • newegg Easy Installation The cable-less backplane design permits quick and effortless drive installation without the hassle of cable connecting.
  • newegg Effective Cooling 3.15" rear ball bearing fan efficiently dissipates the heat generated by hard drives for a stable system running.

Learn more about the SANS DIGITAL TR4U+B

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the SANS DIGITAL TR4U+B

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  • Darren M.
  • 3/10/2015 12:29:43 PM
  • Ownership: more than 1 year

2 out of 5 eggsbad power supplies

Pros: It worked well for a pretty long time.

Cons: I have owned it for 6 years and the power supply has about a 3 year life. My second power supply has just died. Amazing that my disk drives can far outlast the horrible power supply in this thing which by the way costs half of what the tower costs.

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  • Anonymous
  • 2/22/2015 7:22:35 PM
  • Ownership: more than 1 year

2 out of 5 eggsgreat while it lasted

Pros: It worked as a JBOD for a remote offsite solution for 4 offices in three states and two countries. Pop in HDD's and plug in cable. Up and running 90 seconds.

Cons: Has recently created a nightmare. Power supply died and when it did all four drives have become easily unrecoverable. Of course this wouldn't have been a problem except one of those locations went down two days before this failed 1,800 miles from backup. Now fighting to see if SpinRite can recover all four - 4 GB drives.

Other Thoughts: Great for back only

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  • darrin l.
  • 2/4/2015 10:35:21 AM
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsworked for 2 years

Pros: Worked for 2 years

Cons: Died after two years, probable power supply failure, no juice.

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  • Chad H.
  • 1/9/2014 4:00:32 PM
  • Ownership: 1 month to 1 year

1 out of 5 eggsNot worth it at any price

Pros: cheap, but still not worth it

Cons: cheap components, less than ideal customer support if it malfunctions. Constantly had connection problems with USB 3.0

Other Thoughts: Summary:
Cheaply made and if it malfunctions you have to pay for shipping.

Why I bought it:
I own a Drobo Gen 2 and thought that if I bought this and used Windows 8 Storage Spaces with it, it would be a good replacement for the Drobo. Plus, it should be faster since it is USB 3.0 while the Drobo Gen 2 is USB 2.0.

What went wrong:
The device constantly disconnected from my computer, causing Storage Space problems. Eventually the top drive tray went out so I contacted customer support. I was willing to stick with this product and keep using it as a Drobo replacement. Unfortunately, I was informed that I would have to package it back up myself and ship it back on my own dime.

I compared this to the support I got from Drobo when my original Gen2 devce malfunctioned. They immediately sent me a new one via FedEx. The box that arrived included a return label. It was super easy and fast.

I am giving up on this product because I'm assuming that if I do ship it back, I'm just gonna get another shoddy device that won't well either and will eventually malfunction again. Why bother?

What you should get from this review:
While this device appears to be a bargain, be aware that it seems to use very cheap components and if it does malfunction, you are going to have to hassle with tech support and shipping it off, etc.

Stick with companies that treat their customers well and stand behind their products. My experience with Drobo was very positive and I think I was foolish to try and use this product as a replacement.

Sometimes you pay more, but you get so much more back.

Manufacturer Response:

Thank you for purchasing Sans Digital products.

Sorry to hear about the problem. Did our support asking you to try a firmware update? If not, I recommend you to contact one of our engineers to provide you to try out. You can contact us at for email suppor or 1-800-980-1988 for phone support.

About the return policy, if the unit was provded to be defective within the 30 days of purchase (with valid proof of receipt), we will provide shipping label to have the unit returned for RMA.

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  • Gordon P.
  • 5/28/2013 9:27:04 PM
  • Ownership: more than 1 year

3 out of 5 eggsDecent for storage

Pros: *Sturdy
*Quiet fan
*Green activity LEDs and orange power LED - can leave it on while sleeping, unlike other devices that have blinding blue LEDs

Cons: *Can't use Windows "Dynamic Disks"
*Doesn't report drive info properly - hangs udisks for a couple minutes on startup in Linux
*No hot-swap rails; have to take the whole case apart

Other Thoughts: If you've got one of the newer 802.11ac routers with a USB 3.0 port and OpenWRT, it'd probably turn it into a decent NAS server. It won't work with Windows software RAID, but it works fine with LVM2 in Linux, and it seems able to saturate the USB 3.0 bus if you put fast drives in it.

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  • Michael C.
  • 3/29/2013 9:59:06 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsJBOD Only

Pros: Looks Nice, USB 3.0

Cons: No RAID and not worth it. Go for a Rosewill, but be prepared to work on a RAID setup with any of these external enclosures it can be a challenge. Had to return this one and pay shipping and restocking fees.

Other Thoughts: Please Someone make a better External RAID solution!

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

  • Jeff J.
  • 3/20/2013 10:06:37 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsA little disappointed

Pros: Nice look. Space in between drives for better cooling. Fan spins slow enough so as to not be noisy. Interior construction is OK.

Cons: Main complaint is that the USB 3.0 is very unstable. Can't get through a few GB without it crashing the port requiring reboot. I've bought other cases from San Digital and the case has always been made from solid aluminum, but this one has a cheap sheet metal body.

Manufacturer Response:

Thank you for purchasing our products.

USB 3.0 unstable issues could due to incompatibility of the motherboard. There is firmware update for the USB 3.0 to eliminate the problem with disconnect and reconnect. We also recommend connect to a USB hub to check if there is any issues with the onboard USB 3.0 port. Some of the motherboard manufacture creates the USB 3.0 port out of USB 3.0 specification and hence, generating issues.

If you are having problem on the unit, please contact us by calling 1-800-980-1988 for technical support and our engineer will try to resolve it over the phone. You can also contact us at for e-mail supports.

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

  • Anonymous
  • 12/16/2012 6:22:47 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGreat!

Pros: - Non-Expensive
- Easy to setup
- Plug & Play

Cons: - A bit on the noisy side.

Other Thoughts: The reason I am giving thise 4 star out of 5 star is not because of the product, but because of the reality of using software RAID with USB hard-drives

I've tried running with in software RAID, and I had to rebuild the RAID array every 2 weeks (and it tooks like 3 days, because I use 2 terabytes hard-drive)

I reverted back to a non-raid setup with my trusty rsync scripts

1 out of 8 people found this review helpful. Did you? Yes No

  • Anonymous
  • 11/21/2012 7:57:42 AM
  • Ownership: more than 1 year

4 out of 5 eggsReliable Storrage

Pros: I have 6 of this model and over 30TB worth of storrage. I have two units running on ESATA 300 and 4 units running on USB dedicated adaptors. I have never had a problem accessing data on either the ESATA or USB3.0 interfaces.
I have been using this style of cabinet for about 3 years. I am very pleased with the performace and Quality.

Cons: Bad Fans. After 6 months one of the fans started to gurrrr!
I to lost # 1 SATA drive two times before I figured out that the FAN was weak, and intermittently gurring, running too slow causing the drive to heat up. I replaced fans in two cabnets, with the clear ANTEC multi speed fans for about 10 bucks each. These worked and cooled better than the stock fans because you could set a higher output speed.

Other Thoughts: Over all, I think you would be hard pressed considering the cost of these RAID enclosures to to better elsewhere. The cost of a $10 fan is nothing and plugs right in the same connector, no big deal. Operationally, they have been perfect. The RAID Rebuilds reliably also. Not hot swap.

4 out of 5 people found this review helpful. Did you? Yes No

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