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The RAID 0 array works by breaking up data into chunks and striping it across the available disks. This means that each disk contains a portion of the data and that multiple disks will be referenced when retrieving information.

• Requirements: minimum of 2 storage devices
• Primary benefit: Performance
• Make sure that you have functional backups. A single device failure will destroy all data in the array.

Identify the disks you want to use

 lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT

say you see sda, sdb and sdc. SDA is possibly divided in sda1 and sda2, meaning that this disk is in use. If the other are just SDB and SDC these should be the disk you are aiming for.

NAME     SIZE FSTYPE TYPE MOUNTPOINT
sdb      100G        disk
sdc      100G        disk
sda       25G        disk 
├─sda1  24.9G ext4   part /
├─sda14    4M        part 
└─sda15  106M vfat   part /boot/efi

Create the Array

 sudo mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sda /dev/sdb

check if it is crated successful by doing a

 cat /proc/mdstat

The output should look something like:

Personalities : [raid0] 
md0 : active raid0 sdb[1] sda[0]
    209584128 blocks super 1.2 512k chunks

unused devices: <none>

Your ArtIT Team

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