Ever feel like your Linux system is lagging? Do you wish to have the responsiveness of lightning rather than the sloth-like performance you currently have? Then RAID 0 might be the answer you’re looking for.

Imagine a highway with a single lane. That’s how data travels on a regular disk – one byte at a time. But with RAID 0, it’s like adding multiple lanes to the highway. Data gets sliced into stripes and zooms across all the disks in your array, giving you a significant performance boost. Sounds pretty cool, right?

Is RAID 0 Right for You? 

Think about it like this:

• Need a temporary speed boost for non-critical tasks? (think video editing with readily available source files) RAID 0 might be your champion.
• Working with easily recreated data? (like temporary website assets with backups in place) RAID 0 could be a contender.
• Do you have a serious case of the “oops-I-deleted-my-files” jitters? Then RAID 0 is not your friend.

How to set up RAID 0?

For this tutorial, we took two hard disks having the same size (10 GB) and running on the CentOS 7 operating system.

Step 1: Installation of mdadm package 

To install the mdadm package on your system use the following command

Step 2: Create a partition

From the installed package, use the following command to create a partition between the hard disk.

Note: The lsblk command displays the available block devices, whereas the fdisk command launches the partition.

Once the partition starts type the following command,

Note: Type “n” to start a new partition. To choose the primary partition, type ‘p’. therefore 1 is the the partition number. The default value is selected the second time you press the enter key.

Note: To opt for partition, type ‘t’ and hit enter ‘l’. It displays the kind that is accessible.

Note:  Now type ‘fd'(Linux raid autodetect). Next, the ‘p’ detail regarding the partition /dev/sdb.Enter ‘w’ to end the partition as you type. Repeat the above procedure in /dev/sdc

Step 3: Creation of raid md device

As soon as the partition has been created successfully, we need to create a raid md device, which can be achieved by running the following commands.

Step 4: Verifying the status of the raid array

Now since our raid md device is created successfully. Verify the changes using the below command.

Note: Use the above command and verify the raid status(active device, raid level, array size, etc….)

Step 5: Make a file system in your raid devices

Now since our raid array is ready, we will create a filesystem, so it can be used for storing data. For this use the following command

Step 6: make a directory and mounting

Next, we need to make a directory and mount it to the system.

Note: The df command is used to verify /dev/mdo which is mounted under /mnt/raid0.

Step 7:  create file and content of the mount directory

Next after creating and mounting the dictionary, we need to create a file and content for the mounted dictionary 

After verifying all the content and files, type the following command to mount it permanently.

Note: Verify the mounted entries

Step 8: Saving raid config file

To save the configuration file type,

Note: raid level,uuid, and raid device information will be stored in ‘mdadm.conf’ file.