Data Recovery Hospital Logo
Recover Your RAID Arrays, VM, XSAN & Hard Disks NOW!
  • » No Data, No Fee!
  • » Free Diagnosis
  • »Transparent Pricing Upfront
  • » Qualified, Experienced Stuff
  • » Computer Forensic Investigations
  • » Free Weekday UPS Collection
  • » Secure Dedicated Driver
  • » Emergency Callout 24/7
  • » Data Breach Management / Compliance Advice
Get your free quote
Call us 0800 999 3282

Data Recovery From 2 Disk RAID Devices

On February 1st, 2018

​Here at R3 Data Recovery Hospital, we see all sorts of storage devices from USB Sticks, to hard drives, to servers, RAID arrays and they all come with their unique problems.

Recently we received a 2 disk RAID device, the RAID contained 2 x ST31000528AS 1TB Seagate drives.

2 Disk RAID Device Case Study

After the job was initially booked in and all serial numbers taken note of, the diagnosis stage was begun.

After the engineers had diagnosed both drives they noticed one was making a clicking noise, this would normally point to a mechanical failure which would make sense as to why the RAID failed. After inspecting the drive in our clean room, the engineers noticed it was full of "dust" this is caused by the drives heads failing and scratching along the platter service causing more and more damage the longer the drive is powered on.

In an ideal situation if the drive was powered off as soon as the clicking noise started the drive may not have turned out this way.

This could have been a problem for our engineers as this disk was part of a 2 disk RAID, however at the same time it may also not be. If the RAID was set up as RAID 0 then this is where the problems would begin.

For Example, with a RAID 0 the data is spread across both drives. So, the maximum capacity you can have is both drives included in the RAID added together, so in this case it would have been 2TB’s. However, with a RAID 0 if one drive is in as bad as condition as this one was the RAID wouldn’t be recoverable as you need both drives to recover the data lost.

However, if the RAID was set up as a RAID 1 then the engineers only need 1 disk to recover from the RAID as a RAID 1 is mirrored so the data is the same on both drives. So the maximum capacity you can get is the capacity of one drive so in this case 1TB.​

Luckily this customer had the RAID set up as a RAID 1 so even though one drive was unrecoverable the other drive wasn’t, and it was possible a complete image could be made and therefore a full recovery was accomplished. Resulting in a happy Customer and a happy R3 Data Recovery team ​🙂

your data in good hands
With over 50,000 successful recoveries, 10,000 donor drives and one of Europe's best data recovery teams. R3 is a British success story helping bring affordable data recovery to everyone.

Contact our customer services they can diagnose the majority of faults and give accurate pricing before arrival. Free in Lab assessment is also available.

Just call or email and we'll tell you what the problem is, whether your data can be recovered and the full costs and timescales involved in doing so.
Get your free quote
Call US 0800 999 3282

Request your free quote now!



  • Technical Details

    You don't need to select the following; however, please provide a brief description of the problem in the "Other information" field.

  • This field is for validation purposes and should be left unchanged.

PC's Making Strange Noises

RAID Failure & Recovery Questions

Hard Drive Firmware Problems

Recovering Lost Photos

Mechanical Hard Drive Problems

Market leading pricing

Market leading recovery rates

ICO Data Protection

© 2004 – 2018 · R3 Data Recovery Ltd · Company No.05033569 · VAT No. GB119444414
Data Recovery Hospital is a Trading Name of R3 Data Recovery Ltd Since 01/03/2012
twitterfacebookpinterestyoutube-squaregoogle-plus-circle