Everything You Need to Know About RAID Configurations and Your Data


By: Drew Germyn

Categories: Hosting Servers, Technology

When you choose a first-class hosting company for your website, you’re entrusting that provider with your company’s data and security. It’s essential to understand how the choices they make will impact your business before you sign on.
At Localnode, we combine a superior network with superior hardware to provide the best protection for our valuable clients. We use Solid State Drives (SSDs) with a RAID-10 configuration. We feel that this combination protects our clients while also giving them optimal performance.

RAID Configurations Explained

Redundant Array of Independent Disks (RAID) technology helps to do two things at once. First, it minimises faults found in hardware; and second, it can improve their performance. Choosing the right RAID configuration is essential because it can impact your storage, speed, and security. There are several RAID configurations to choose. Here’s what you need to know.


The RAID-0 configuration splits system data into two blocks, writing data across all drives. The advantage of RAID-0 is that it doubles the amount of space that can be used in the configuration. Increasing the number of drives allows you to increase the output and input of data (and configuration space). It provides good speed and functionality. The biggest downside to RAID-0 is that it isn’t a fault-tolerant configuration. If one of the drives in the array fails, the data being stored is lost.


Using a RAID-1 configuration mitigates some of the risks associated with RAID-0 by storing data on two separate drive arrays. Should one drive array fail, the data from the other drive can be used to recover it. The speed isn’t comparable to RAID-0, but it offers more security than RAID-0 since the data can be recovered. One potential downside is that it isn’t as fast as RAID-0.


The most commonly-used type of RAID configuration is RAID-5. It combines decent performance speeds with high fault tolerance. The data isn’t written to a specific drive. Instead, it’s spread across a minimum of three disks. If one drive fails, you’ll be able to reconstruct the data from the remaining drives while the failed drive is being repaired or replaced. That’s a big plus since it ensures you’ll be able to continue your operations. The downside is that data up to 4TB can take up to 24 hours to replace.


RAID-6 improves upon RAID-5 by using a minimum of four drives separated into pairs of two. With a RAID-5 configuration, losing two drives (unlikely, but possible) would result in a complete loss of data. By contrast, RAID-6 configurations can withstand the loss of two drives at once, allowing your hosting company to swap out the dead drives without impacting your data. The input and output speeds are the same as RAID-5.


The RAID-10 configuration combines the strengths of the RAID-0 and RAID-1 configurations to maximise security and protect data. It uses four drive arrays, two to store your data and two to mirror it. It offers excellent speed. If there’s a drive failure, it can copy data and restore it very quickly, since all data is being mirrored. A great bonus – something it shares with RAID-0 — is that it doubles the storage space that can be used in the configuration – since the data is being stored and mirrored at the same time.

Why Localnode Uses RAID-10

We’ve chosen the RAID-10 configuration at Localnode because we feel it offers our first-class hosting clients the best of both worlds: speed and security. We recognise that you can’t afford to wait for your data to be restored if a drive fails. The RAID-10 configuration, when used with our superior hardware and superior software, ensures that your data will be safe with us.
Are you ready to see how our superior hardware can help protect your company’s data? Click here to learn about our first-class hosting service now.