JBOD Data Recovery

RAID isn’t the only way to link multiple hard drives together. There are other ways to combine separate data storage devices into what seems to be a single volume. One of these ways is JBOD. The acronym JBOD stands for “just a bunch of disks”. On a basic level, JBOD is fundamentally very similar to RAID-0, in that neither offer any sort of data redundancy or fault tolerance. Because of this, some people in the computer science world consider RAID 0 to actually be a kind of JBOD, not a “true” RAID level. Like RAID 0, JBOD has a high risk of failure. If you’ve lost data from your JBOD setup, our JBOD data recovery experts can help.

How Does JBOD Work?

In a JBOD, the disks are not necessarily connected. Technically, connecting several external hard drives to your computer, each with its own drive letter in Windows, is enough to create a JBOD. In the literal sense, it is “just a bunch of disks”. But usually, when we talk about JBOD, we’re talking about multiple disks appearing as one unified storage volume. Instead of striping the disks, you span them together. When you span two hard drives together, you stitch the end of one volume right onto the beginning of the next. This appears to you and your operating system to be a single large volume with no gaps or seams. Like RAID 0, when one drive in a JBOD fails, the entire volume becomes inaccessible.

One key difference between a JBOD and RAID is that the disks in a JBOD can be of various sizes. If you try to make a RAID 0 with two 2-terabyte disks, one 3-terabyte disk, and one 4-terabyte disk, the controller will only use 2 terabytes from the third and fourth drives and ignore the rest of their storage capacity, giving you 8 terabytes of disk space. On the other hand, a JBOD will offer the full 11 terabytes. This is one of the points in JBOD’s favor and one reason why someone might want to use it over RAID 0. (It is our belief, though, that nobody should be using RAID 0 for any reason in this day and age.)

Other Ways to Use JBOD

A JBOD doesn’t necessarily have to be RAID 0’s spanned cousin. Some software RAID setups start out with a JBOD. The disks are spanned into a single volume, and then the software handles striping, parity, and other RAID features. A software RAID created using Windows Storage Spaces, for example, can be created using disks of any size and can provide striping, mirroring, and single or double parity on top of a JBOD made with a wide variety of data storage devices. If you’ve ever wanted to set up a RAID-5 array using two 16-gigabyte flash drives and a 32-gigabyte SD card, you probably could (although it probably wouldn’t be very useful).

This enclosure had four hard drives linked in a JBOD. Our engineers were able to perform a successful JBOD data recovery operation for our client.
This enclosure had four hard drives linked in a JBOD. Our engineers were able to perform a successful JBOD data recovery operation for our client.

How We Recover Data from a Failed JBOD

Just because a JBOD spans its data instead of striping it doesn’t make it any less failure-prone than RAID 0. JBOD and RAID 0 are both more than twice as likely to fail as a single hard drive, and that number only goes up as you add more drives. Not only can any drive fail, but the controller card or enclosure can fail as well. For this reason, data in a JBOD is especially vulnerable.

When we receive a JBOD data recovery case, our engineers create disk images of each drive that are as complete as possible, repairing any drives with require it. In most cases, even the failed hard drive(s) can be over 90% imaged after our engineers repair it. Just like in RAID cases, our technicians must use custom software to link the drives together. But a JBOD array isn’t quite as challenging for our engineers to put back together as a RAID array. Because JBODs are simpler by design, there are far fewer puzzle pieces that need to be put together.

Why Choose Gillware for JBOD File Recovery?

The data recovery experts at Gillware have tens of thousands of hours of experience. These hours of experience encompass thousands of RAID and JBOD data recovery cases. In our cleanroom lab in Madison, WI, we offer our engineers’ quality services at an affordable price.

At Gillware Data Recovery, we offer financially risk-free data recovery from crashed JBOD setups. We start with a free evaluation, and can even provide you a UPS label to cover the cost of inbound shipping. As part of our standard service, evaluation takes 1-2 business days on average. Expedited service is also available, and is still financially risk-free.

After evaluating your JBOD data recovery situation, we present you with a statement of work. This includes a firm price quote, probability of success, and how long we expect the recovery work to take. We only move forward with the recovery if you approve the quote. We don’t show you a bill until we’ve finished our work. If we’ve successfully recovered your data, we send it back to you on a new password-protected hard drive.

Why choose Gillware for JBOD Data Recovery?

Gillware’s data recovery services are affordably priced, technologically innovative and completely secure.


Best-in-class engineering and software development staff
Gillware employs a full time staff of electrical engineers, mechanical engineers, computer scientists and software developers to handle the most complex data recovery situations and data solutions

Strategic partnerships with leading technology companies
Gillware is proud to be a recommended provider for Dell, Western Digital and other major hardware and software vendors. These partnerships allow us to gain unique insight into recovering from these devices.

RAID Array / NAS / SAN data recovery
Using advanced engineering techniques, we can recover data from large capacity, enterprise grade storage devices such as RAID arrays, network attached storage (NAS) devices and storage area network (SAN) devices.

Virtual machine data recovery
Thanks to special engineering and programming efforts, Gillware is able to recover data from virtualized environments with a high degree of success.


SOC 2 Type II audited
Gillware has been security audited to ensure data safety, meaning all our facilities, networks, policies and practices have been independently reviewed and determined as completely secure.

Facility and staff
Gillware’s facilities meet the SOC 2 Type II audit requirements for security to prevent entry by unauthorized personnel. All staff are pre-screened, background checked and fully instructed in the security protocol of the company.

We are a GSA contract holder.
We meet the criteria to be approved for use by government agencies

GSA Contract No.: GS-35F-0547W

HIPAA compliant
Our entire data recovery process can be handled to meet HIPAA requirements for encryption, transfer and protection of e-PHI.


No obligation, no up-front fees, free inbound shipping and no-cost evaluations.
Gillware’s data recovery process is 100% financially risk free. We only charge if the data you want is successfully recovered.

Our pricing is 40-50% less than our competition.
By using cutting edge engineering techniques, we are able to control costs and keep data recovery prices low.

Instant online estimates.
By providing us with some basic information about your case, we can give you an idea of how much it will cost before you proceed with the recovery.

We only charge for successful data recovery efforts.
We work with you to define clear data recovery goals for our technicians, and only charge you upon successfully meeting these goals and recovering the data that is most important to you.

Gillware is trusted, reviewed and certified

Gillware has the seal of approval from a number of different independent review organizations, including SOC 2 Type II audit status, so our customers can be sure they’re getting the best data recovery service possible.

Gillware is a proud member of IDEMA and the Apple Consultants Network.

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