MDADM is the raid array utility for multiple disks administration.We install it on our system as follows:
We need to pick the disks that we are going to use in the disk array
We can check our disk using the below:
To make sure that our disks didn't have any previous data in their superblock, we can erase their superblock using the below command:
Then, we create our raid 5 using the above disks:
This will create a virtual device - /dev/md0 - that will represent our raid device.
To get statistics about our device - parity calculations/building for example -:
We can check our raid device using the below command:
To use our raid device, we will need to:- format it using the ext4 filesystem.
- create a mountpoint
- mount our device on it.
We could check our device using the below command:
To check the status of our raid device, we use:
To ensure that the device will be mounted at boot time, we need to add configuration data it in the below files:
/etc/mdadm/mdadm.conf:
/etc/fstab:
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