How To Install mdadm on Debian 9

In this tutorial we learn how to install mdadm on Debian 9. mdadm is tool to administer Linux MD arrays (software RAID)

Introduction

In this tutorial we learn how to install mdadm on Debian 9.

What is mdadm

mdadm is:

The mdadm utility can be used to create, manage, and monitor MD (multi-disk) arrays for software RAID or multipath I/O.

This package automatically configures mdadm to assemble arrays during the system startup process. If not needed, this functionality can be disabled.

There are three methods to install mdadm on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install mdadm Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install mdadm using apt-get by running the following command:

sudo apt-get -y install mdadm

Install mdadm Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install mdadm using apt by running the following command:

sudo apt -y install mdadm

Install mdadm Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install mdadm using aptitude by running the following command:

sudo aptitude -y install mdadm

How To Uninstall mdadm on Debian 9

To uninstall only the mdadm package we can use the following command:

sudo apt-get remove mdadm

Uninstall mdadm And Its Dependencies

To uninstall mdadm and its dependencies that are no longer needed by Debian 9, we can use the command below:

sudo apt-get -y autoremove mdadm

Remove mdadm Configurations and Data

To remove mdadm configuration and data from Debian 9 we can use the following command:

sudo apt-get -y purge mdadm

Remove mdadm configuration, data, and all of its dependencies

We can use the following command to remove mdadm configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge mdadm

Dependencies

mdadm have the following dependencies:

References

Summary

In this tutorial we learn how to install mdadm package on Debian 9 using different package management tools: apt, apt-get and aptitude.