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Create RAID Arrays with mdadm on Ubuntu

What is mdadm

The mdadm utility can be used to create and manage storage arrays using Linux’s software RAID capabilities. Administrators have great flexibility in coordinating their individual storage devices and creating logical storage devices that have greater performance or redundancy characteristics.

Creating a RAID 0 Array

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. This option Require minimum of 2 storage devices

In the following examples we are simulate 4 storage devices

To get started, find full informations for the raw disks that you will be using for the raid:

				
					sudo mdadm --create --verbose /dev/md0 --level=0 --raid-devices=4 /dev/sdc /dev/sdd /dev/sde /dev/sdf

Outlook look likes

				
					NAME SIZE FSTYPE TYPE MOUNTPOINT
sdc 500G disk
sdd 500G disk
sde 500G disk
sdf 500G disk
vda 20G disk
├─vda1 200G ext4 part /
└─vdb1 100G part

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Create RAID Arrays with mdadm on Ubuntu

What is mdadm The mdadm utility can be used to create and manage storage arrays using Linux’s software RAID capabilities. Administrators have great flexibility in

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Linux Administrators (1) mdadm (1) Ubuntu (1)