RAID 5 Data Recovery

RAID 5 systems are not infallible and should be monitored at all times. Immediately upon the failure of any drive in the system, a notification via email, text, etc. should be generated and sent to the responsible party for drive replacement. 

Always replace a problem drive, never reseat or re-introduce a problem drive to the RAID. 

No data is lost in the case of a single disk failure, but if a second disk fails before data can be rebuilt to a replacement drive, all data in the array will inaccessible. If the second drive fails before the first can be replaced or rebuilt, then the system should be powered down. No exceptions! 

If you have a current backup. Mark all of the drives (1,2,3...or A,B,C...), then remove and replace each of them with new hard drives. Keep the originals in a secure place to be used for data recovery purposes in case of corrupt or non-existent backup. The reason that I say replace all of the drives; when you look at the model numbers of the original drives they are almost always manufactured at the same time, in the same facility, in the same batch. If one has failed... 

The system can now be rebuilt and the backup restored; crises averted. 

No Backup you say? 

Time for some hard thought and deliberate action. The wrong move here could cost you all of your data. 

What are the ramifications of the RAID 5 failure? Is the data mission critical? Is it archival data that is needed, but not time sensitive? If so, it's time for a data recovery specialist. At this point in time most, if not all of the data is probably recoverable and a competent data recovery company can have you back up and running in as little as 24 hours. In our experience, most RAID 5 systems are completely recoverable if they are shut off immediately after failure symptoms occur. 

Do not panic! Most unrecoverable RAID 5 data is a direct result of well meaning technician's recovery attempts gone wrong. You're smart, use your own intelligence/instinct when dealing with manufacturer tech support. Their job is to get their product up and running in as short a period as possible, data is not their main focus; after all you did do your backups correct? 

Operating a damaged RAID risks accidental overwrites, parity loss and other serious issues that can complicate the data recovery process or even render the data completely unrecoverable.           

            Never try to reseat and rebuild drives as this can corrupt the system by introducing stale data. 

            Never try to replace more than 1 drive and rebuild an array (Yes, this has happened) 

            Never try to re-introduce a drive to the array that has gone offline.           

            Never remove more than 1 drive at a time unless all drives and bays are clearly relationally marked.           

            It is critical that the system not be rebooted and/or allowed to rebuild if the array has failed. Remember, the array will not fail unless there are at least 2 problem drives or other component failure. 

Our data recovery engineers routinely recover data from RAID 5 systems that have: 

  • Multiple hard drive failures / Hard drives offline

  • RAID volumes or arrays that won’t mount

  • Configuration corruption or damage

  • Addition of incompatible drives

  • Software corruption/Hardware conflicts

  • Controller Card Failure

  • Controller Card Set-up Corruption

  • Server won’t boot

  • Server registry configuration lost

  • Rebuild failure

  • Accidental Formatting or Re-initialization

  • Electronic Damage

  • Fire/Flood

  • Missing data

In most situations Carolina Data Recovery can have your mission critical data back in as little as 4-6 hours and the remainder within 24-36 hours, depending upon the severity of hard drive/data damage. 

We offer risk-free RAID evaluations and we provide a no recovery, no charge guarantee with every case. Contact our customer service team today to get started. 

Our CDR data recovery specialist are also well versed in recovering data from the following NAS manufacturers: LaCie, Buffalo TeraStation™, cisco Linksys, SNAP server, QNAP, FreeNAS, Adaptec, etc. and quetek.


  • Linux®
  • UNIX™
  • Microsoft Windows®  
  • Apple/Macintosh® 
  • NetWare®
  • VMware®

Recovery Services

  • USB / Memory Cards
  • Laptops / Desktops
  • External Hard Drives
  • Solid State Drives
  • Backup Tapes


  • Strict Non-Disclosure
  • Chain of Custody Protocol
  • High Security Safekeeping
  • Confidentiality Agreement
  • Controlled Access 
  • Secure Location

Client Reviews

“Carolina Data Recovery is terrific. We lost a RAID 5 array with critical data and we needed to recover it quickly. We spoke with 3 different venders, and Ron made a big impression over the phone. We did not regret our choice. He worked with us on shipping and priority, and within three days of placing that call we had our data back in 3 days.. HIGHLY recommended. .”
– Jim B.
“Great service! Great company! After bringing my computer to three other companies - all who said my data was lost and gone forever - Carolina Data Recovery found and restored it as easy as 1 - 2 - 3. After all the ups and downs and horrors of computer problems, I'm so glad I found a place to go!”
– Anne Fiala
“I researched a few places near me that are in the business of data recovery. When I called, I spoke with Mr. *** D****. He was optimistic that he could recover the data from our dead hard drive from our file server. He did not guarantee anything without an evaluation. I drove two hours and delivered the hard drive to him the next day personally. He checked the drive immediately while I waited. He was confident that his team could recover the data from the drive within 3 to 5 days. Surprisingly, Mr. D**** called me the next morning with the good news that his team had come in for an emergency job and completed the recovery on my hard drive during the night. They were able to recover 100% of the data. Mr. D**** was pleasant to work with. I hope I never need there services again, but If I do I would definitely work with them again. I would highly recommend.”
– Bobby M.
“These guys/gals are really great. Ron was very professional and stayed in communication thru the entire process of our clients Data Recovery.”
– David P.
“I thought I had lost the last 15 years of my life in pictures, but they were able to recover them! Such a relief! Worth every penny!”
– Shannon M.
“We had a hard drive failure at work, and we didn't have a backup. We went to Ron for a free analysis and he verified there was an issue within 15 minutes. We've never had to deal with data recovery before, and he was willing to answer any questions. He got our data restored to a new drive within 2 days. Would definitely recommend.”
– Seth Allen
“Carolina Data Recovery saved the day! I had an external hard drive that contained all of my personal information and pictures over the last 3 years. This hard drive had crashed leaving me in a world of panic. Carolina Data Recovery specialists were able to fully recover my lost information, keeping me updated throughout the entire process. I highly recommend Carolina Data Recovery for all your data needs! ”
– J. Hawk

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