How to Setup Software RAID with MDADM Comand on Linux Ubuntu in 2021 Hetman Software
video description
sendo-sendo-desktop:-$ sudo mdadm create /dev/md0 -a yes -l 5 -n 4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
mdadm: Unknown keyword mdadm
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.
Date: 2022-03-28
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Comments and reviews: 4
DIY
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.
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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.
reply
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.
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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.
reply
Mike
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?
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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?
reply
Lee
This presentation is fantastic. It solved the annoying -mdadm: cannot open /dev/sdc1: Device or resource busy -
business. Thank you for making this video.
reply
This presentation is fantastic. It solved the annoying -mdadm: cannot open /dev/sdc1: Device or resource busy -
business. Thank you for making this video.
reply
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