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The Difference In Data Recovery From A RAID 0 And RAID 1

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.

RAID 0 and RAID 1 are a popular way to store important data in a network, especially in a NAS device such as a QNAP, BUFFALO or IOMEGA.

R3 RAID data recovery professionals

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.

What Our Customers Say About Us

I was delighted with the service from the R3 team. My daughter, a teacher, had two years of lessons on a USB stick. She had tried another company after being told the charge would be either around £100 or around £200. But when they received the stick, they said they needed to buy a widget to sort out the problem, and that the cost would be around £385. So I asked them to send me the stick back.

Then I went to the team at R3 Data Recovery. They gave me an order number over the phone and I then wrote a letter, enclosed it with the stick, and sent it off to Sheffield on a Friday. R3 told me it would be either £79 plus VAT or £149 plus VAT. They notified me on Monday that it had arrived, and on Tuesday morning that they sent me a list of files they could recover. The charge was £79 plus VAT. I paid by bank transfer, and later that day they uploaded all the files into a Dropbox folder. So a hearty recommendation from me.

What impressed me particularly, their success apart, is that if R3 had said it was £149 plus VAT I would have paid without questioning them. But they didn’t. Excellent service.

Pete Wrobel

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R3 Data Recovery Services are designed to meet the needs of businesses and home users requiring a fixed cost, highly successful data recovery solution.

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​If your hard drive happens to fail, contact our team of experts. Our skilled professionals will be able to reliably recover data on your hard drive and provide industry-leading turnaround times which give you the confidence that's necessary to develop a solid, effective recovery plan.


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