💽 How to Setup Software RAID with MDADM Comand on Linux Ubuntu in 2021 💾

👍 In this video, we’ll be creating a software RAID on a Linux platform. In my previous videos, I have already shown you what is RAID, types of such disk arrays, and how to build them. From today’s video, you will learn how to build a RAID system on a Linux platform.

Content:
0:00 - Installing the mdadm utility
2:28 - Checking for disks
2:56 - Creating a new section
5:26 - How to create a RAID array
6:13 - File system for disk
6:38 - Mounting a partition
8:11 - Troubleshooting and array recovery

That is all for now! Hopefully, this video was useful. Remember to click the Like button and subscribe to our channel. Push the bell button to receive notifications and never miss new videos. Leave comments to ask questions. Thank you for watching. Good luck.

Other Videos: #RAID, #Linux, #Ubuntu

[HetmanRecovery]

Content:
1:57 - Installing the mdadm utility
2:28 - Checking for disks
2:56 - Creating a new section
5:26 - How to create a RAID array
6:13 - File system for disk
6:38 - Mounting a partition
8:11 - Troubleshooting and array recovery

👍 In this video, we’ll be creating a software RAID on a Linux platform!!! We will be glad to answer any questions in comments!

[raven]

It is not OK to use dev/sda or sdb or any label like this, it is recomended to use the disk identifier because partition labels may change during boot if you conect a usb drive.

[tydlig]

In future its good if you can provide a command list instead of having to follow every row printed on your youtube video.

[leeoliver]

This presentation is fantastic. It solved the annoying "mdadm: cannot open /dev/sdc1: Device or resource busy "
business. Thank you for making this video.

[lo.and.behold]

This guy is awesome, subbed and liked. Best tutorial got my Raid 6 working now, deserves way more than 35k subs!

[aidannotfunny]

A lot of this video was quite unnecessary, but you explaining how to use mdadm was absolutely invaluable to me as I was really confused with it! Thank you so much, this really helped me. To anyone watching this: Don't manually partition your drives like he did. That's being dumb. Just use a disk utility (KDE Partition Mangaer, GNOME disk utility, or GParted) instead.

[dimitristsoutsouras]

You used fdisk and created mbr drives. If the drives were bigger than 2tb (and nowadays they are) you could use gdisk and create uefi drives/ partitions.
You also reffering to disks with sd[a, b...n] which in times of troubleshooting could be catastrophic if replacing drives and mistakenly you place it in another position. Wouldn t it be better to refer to the disks by id number? (/dev/disk/by-id)

[SUSPENDERSnLACE]

I’ve successfully set up the array, but how do I save files to it

[TrevorEMPF]

PLEASE CAN ANYONe EXPLAIN? Why do we have to use Command Line when the likes of Red Hat, CentOS or Feroda use a GUI instead? Isn’t Ubuntu to be more use friendly?

[arsacode]

I do not have the sdd...

I'm using a live persistent usb to install lubuntu studio

[wodzimierzwohn]

Hello, I am trying to understand how to have disks monitoring. Let's imagine I will set up RAID1 out of 2x 2Tb disks. As we know it will be 2Tb disk where max amount of disks can be damaged is n-1, so 1 in my example. Now question- as NAS is device used somewhere in Rack we don't see permanently machine status. How to monitor disks with e.g. email notifications if one disk is out of order???

[mybTamaki]

Setup ist easy!
Replace of demage HDDs ist the Problem!

[angryapple]

What if I wanted to do a RAID1 with only two disk, how should I do this?

[DiyintheGhetto]

Hello the problem I have is that I have one Linux system that is always online and always being written and reading from so I worry about losing the drive. Is there a way to copy the main drove to a backup drive like in a raid redundancy? I know once the drive has a os on it makes it hard to do a software raid.

[MikeSmith-xgnw]

I'm confused by the fact that you combined 3 drives, but the new drive seems to only have the combined space of 2 of the drives. Any idea what's going on there?

[arsacode]

My 500gb hard drive paired with other two hdd's of 160gb each ended up being a +- 300 gb

xD hahahahahaha damn...

[SUSPENDERSnLACE]

im trying to follow your tutorial and everything seemed to be working but i got the following input/output issue please help
mdadm: Unknown keyword mdadm
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.