Case Study: Recovering a Crashed 4 Disk Netgear NAS

Configuration

4 x 1TB disks in a RAID 5 setup

Fault

A power outage had damaged the NAS and corrupted the RAID data.

Service

Emergency Service – Data was recovered successfully with 12 hours.

Netgear NAS RAID 5

Notes

NAS (Network Attached Storage) devices are very popular with businesses as they offer large quantities of storage capacity with the safety of a RAID 5 setup. Data loss on NAS systems is often caused by one of the hard drives in the NAS going faulty, but in a RAID 5 system, one drive can crash and the RAID will continue working without any data loss. This is one of the reasons why RAID 5 is one of the most popular types of server storage topologies in use today.

In this instance the client’s NAS had suffered a power outage. After power to the client’s site had been restored, the NAS would not boot up correctly and it was not possible to access the data held on it. Once the NAS was delivered to the Data Clinic lab, diagnosis identified faults to the NAS casing and corruption to 2 of the hard drives inside the NAS. This had led to a general corruption in the RAID 5. To recover the data it was necessary to get 3 of the 4 drives back into a working state so they could read and the data on them pieced back together using Netgear NAS RAID 5 configuration.

Links

See Data Clinic’s Netgear NAS recovery page at http://www.dataclinic.co.uk/netgear-readynas-data-recovery/
See Data Clinic’s NAS recovery section at http://www.dataclinic.co.uk/nas-data-recovery/
See Data Clinic’s RAID recovery section at http://www.dataclinic.co.uk/hard-disk-raid-recovery/

Marc De-Haviland

06:54 13 May 20

Contacted Data clinic with my Hard drive Issue. Chris was FANTASTIC !!! Called me back at 10 pm at night !!!! Explained in detail the ins and outs of hardware issues in an easy to understand manner. Arranged for a courier to pick the hard drive up and get it fixed. Friendly, professional and Informative service. Went above and beyond all expectations. Can’t thank you enough. Great comms throughout.

Ken Sargeant

18:11 07 May 20

I approached two companies for help with a failed drive and data recovery. Data Clinic was the 2nd company to respond, one day later than the first but still quick in response. Helpful, supportive, calm and non 'pushey' response was a big plus for me, especially since it was going to cost some. I dont know the industry standard for speed of service but a couple of days between pre arranged pick up of my failed drive, getting back an email of drive recoverable contents and receiving back to my home a new drive with my information was a great relief and no hassle. Looks like pretty much all of my data was recovered. Being Joe Public I had some worries and questions, they got answered reassuringly. All in, pleased with the service and thank you DC.

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