It’s important to understand how a RAID 0 and RAID 1 work to understand the difference between them.
A RAID 0 contains a minimum of two hard drives and the data stored on the hard drives is split evenly between the two drives. This means one file can be stored on both drives, in pieces which allows for faster access to the data. This is known as Striping.
A RAID 1 again contains a minimum of two hard drives, with the data stored on one hard drive and a copy of that data is stored on another hard drive. This is known as Mirroring. The advantage is if one hard drive fails the data is still accessible on the working hard drive.
Unfortunately, there are times when a RAID fails and causes the data to be lost. The main causes of a RAID failure vary, from the RAID controller failing to one hard drive failing or a hot swap of one drive.
For RAID 0, if one hard drive fails it causes all data to be lost because it is striped. So, to recover the data both hard drives are needed, so the data from both hard drives can be pieced together rather like a jigsaw.
When one hard drive in a RAID 1 fails, the other hard drive should carry on working, however the failed hard drive can affect the working one, and if the RAID Controller fails then both drives will be inaccessible. A RAID 1 failure does mean that every drive offers a chance of recovery increasing the likelihood of a successful recovery.
At R3 we perform RAID recoveries on a daily basis. It’s important for our clients to know that if it is business critical data that has been lost, the cost of the data recovery should be covered by business insurance. It’s also very important to understand if the lost data has any impact on the Data Protection Act and the new GDPR as non-compliance will incur significant fines and penalties. As part of our RAID data recovery service we provide help and guidance to ensure compliance for any data breach allowing our clients to fulfil normal day to day operations without distraction.
I have been wanting to write this review for some time as I’ve been nothing but grateful for the work Andy, Martin and all the team completed for me. I was in a real pickle when a (seemingly innocuous) spillage on my laptop threatened to destroy several month’s music production work, vital to my career.
Andy’s calm and reassuring manner, coupled with the timely and professional operation carried out by R3 meant that nearly all my data was retrievable (to within an hour or so of the spillage). The team kept me apprised all the way through the process; collected and returned the hard disk to me with a minimum of fuss and suggested alternative means of backing up (I backup on a daily basis now to external hard drives and the cloud!!)
A 10/10 service, I’ll definitely be recommending R3 to any colleagues similarly finding themselves up a certain creek without a certain paddle!!
R3 Data Recovery is rated (4.6) by 294 customer reviews on Reviews.co.uk
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