How to Make RAID 0 in Ubuntu? A Step-by-Step Guide


Setting up RAID 0 in Ubuntu can significantly enhance your system’s storage performance by combining multiple drives into a single logical volume. RAID 0, also known as striping, divides data across multiple disks, improving both read and write speeds. In this guide, we’ll walk you through the process of creating RAID 0 in Ubuntu, helping you make the most out of your storage setup.

How to Make RAID 0 in Ubuntu?

To create RAID 0 in Ubuntu, follow these steps:

1. Backup Your Data

Before you proceed, ensure you have a backup of all your important data. Setting up RAID involves disk operations that can potentially lead to data loss if not done correctly.

2. Install Ubuntu

If you haven’t already installed Ubuntu, download and install the latest version on your system.

3. Connect the Drives

Connect the drives you intend to use for RAID 0 to your computer. Make sure they are recognized by Ubuntu.

4. Install the mdadm Tool

Open a terminal and install the mdadm tool by entering the following command:

sudo apt-get install mdadm

5. Create RAID 0 Array

  1. In the terminal, enter the following command to create a RAID 0 array named /dev/md0 using your connected drives:
sudo mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdX /dev/sdY

Replace /dev/sdX and /dev/sdY with the actual device names of your drives.

  1. Monitor the progress by checking the /proc/mdstat file:
watch cat /proc/mdstat
  1. Once the array is created, format it with your desired file system. For example, to format it as ext4:
sudo mkfs.ext4 /dev/md0

6. Mount the RAID Array

  1. Create a directory where you want to mount the RAID array:
sudo mkdir /mnt/raid0
  1. Mount the RAID array to the directory:
sudo mount /dev/md0 /mnt/raid0
  1. Make the mount persist through reboots by adding an entry to the /etc/fstab file:
echo '/dev/md0 /mnt/raid0 ext4 defaults 0 0' | sudo tee -a /etc/fstab

7. Verify and Test

Check if the RAID 0 array is working as expected by copying, moving, and accessing files on it. Enjoy the improved storage performance!


Can I add more drives to an existing RAID 0 array?

No, RAID 0 arrays cannot be expanded by adding more drives. You would need to create a new array with the desired drives.

Is RAID 0 safe for data storage?

While RAID 0 offers improved performance, it lacks data redundancy. If one drive fails, you could lose all data. Regular backups are essential.

Can I use drives of different sizes for RAID 0?

Yes, but the total capacity of the array will be limited to the size of the smallest drive. Unused space on larger drives won’t be utilized.

Can I use SSDs and HDDs together in a RAID 0 setup?

Yes, but keep in mind that the performance will be limited by the slower drive. It’s better to use similar drives for balanced performance.

Can I convert an existing Ubuntu installation to RAID 0?

Converting an existing installation to RAID 0 is complex and risky. It’s recommended to back up your data and perform a fresh installation.

Is RAID 0 suitable for all use cases?

RAID 0 is ideal for scenarios where performance matters more than data redundancy, such as video editing and gaming. It’s not recommended for critical data storage.

How to set RAID 0 in Linux?

Set up RAID 0 in Linux by combining disks into a striped array using the mdadm tool to enhance data read/write performance.

How to configure RAID 0 in Linux?

Configure RAID 0 in Linux by installing the mdadm package, creating a RAID 0 array, and formatting it using filesystem commands.

How to make RAID 0 in Ubuntu?

To create RAID 0 in Ubuntu, use the `mdadm` command to set up striped disks for enhanced performance.

What is RAID 0 in Linux?

RAID 0 in Linux is a disk configuration where data is striped across multiple drives for improved speed, but without redundancy.


Setting up RAID 0 in Ubuntu can be a game-changer for your system’s storage performance. By following the step-by-step instructions provided in this guide, you can create a RAID 0 array and harness the combined power of multiple drives. Remember to back up your data before proceeding and consider your use case before choosing RAID 0 for your storage needs.

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