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  3. Raid 0 vs. Raid 10

In order to make a comparison between Raid 0 and Raid 10, you must understand each Raid individually so you can decide which one is best for you.

Let’s start the process from Raid 0.

What is RAID 0?

Raid 0 can be described as a connection between two or more physical discs. This connection makes the discs appear as a single logical drive.

There is a catch in this connection. The total amount of memory will be equal to the size of the smallest drive multiplied with the number of total drives.

raid-0

For example, if you have connected two drives with Raid 0 connection, one with 250GB capacity and the other is 250GB, you will have the final capacity according to this formula 250x2=500GB.

Advantages and disadvantages of Raid 0

Good things

  • The capacity of the whole array is considered a single entity which increases the read and write speed.
  • Data is distributed on the whole array to make maximum use of the memory space.
  • A fast method to store and retrieve data.
  • Reliable connection technique.

Things we didn’t like

  • This singularity means if one disc is failed, all the data on the other discs is also compromised. You can have a loss of data or contamination on the complete array.
  • Since all the data is scattered on the entire array, the data recovery process becomes time-consuming and hectic.
  • It is almost impossible to collect stripped data.
  • When you use fancy tools to recover lost data, there are still chances of data loss
  • The complete capacity of the array depends on the capacity of the smallest drive

When RAID 0 is useful

  • Build a cheap and efficient array
  • Take benefit from its write/read speed
  • You have an almost equal size of drives

What is RAID 10?

Redundant Array of Independent (or Inexpensive) Disks is the acronym of Raid. There are several other levels from 0 to 9 as well for the same purpose with different benefits. Raid 10 is the combination of Raid 1 and Raid 0.

Mirroring is the term that defines writing data on two or more hard drive disks (HDDs) at the same time. Here you can benefit from the mirroring as when one disk fails; your mirror image preserves the data from the failed disk.

Raid 10 config

The Advantages and Disadvantages of RAID 10

Good things

  • Fast and resilient combination of two storage levels.
  • Relatively an inexpensive fix.
  • “Chunks” are written in succession to different disks.
  • Chunks of data can be read and write simultaneously form different drives.
  • It isn't difficult and only takes a few minutes.

Things we didn’t like

  • The mirror takes over before you take a copy of the failed disk.
  • Cuts usable disk space in half.
  • You need a disk controller that supports RAID.
  • You need at least four physical hard drives to implement raid 10.

Raid 10 Is Not Backup

Even though Raid 10 writes data on two hard drives simultaneously, it is still not your traditional backup. If the data on one drive is corrupted, it will corrupt the both drives. When you are using Raid you must use an effective backup system. And beware of the fact if you feel any issue in your data, don't overwrite the previous backup rather use some other location.

 You can checkout our VPS solutions which have RAID 10 configurations integrated.

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Nisal N

I’m a Computer Engineering student and I always had a very strong passion for computers and networking. It always fascinated me how this technology functions and now I enjoy learning new things and also sharing my knowledge with fellow curiosity seekers out there.

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