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In the previous lesson, you have learned about storage devices, and you created partitions,

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LVM logical volumes, as well as RAID devices.

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Now we are going to zoom into the file systems that you can put on top of it.

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Multiple file systems are available for Linux.

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Sometimes it depends on the distribution that you are using whether or not a file system

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is here.

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Let me list the most important ones, starting with exe3.

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Exe3 is the old Linux standard.

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It's a journaling file system, and that means that it has a transaction log that allows

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it to recover if ever your server crashed and you need to repair files that were open.

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Exe4 is an update to exe3.

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That has been around for almost two decades already, so exe3 really is old.

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Exe4 is a very stable file system, and for that reason, it is still used on many Linux

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distributions.

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XFS is a file system that was developed to deal with large amounts of data.

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Red Hat is using it, and Red Hat has tuned it a lot to make sure that it can deal with

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data in the biggest of environments.

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NFS is a little bit different.

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It's a network file system.

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It allows you to mount shares that come in from different servers.

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And SMB or CIFS is a file system that is also network-based.

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It's an interface to Windows-compatible shares.

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So you can use it to mount a Windows share on your Linux machine.

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And that is VFAT.

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VFAT is the most compatible file system, and that means that you can use VFAT on Linux,

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on macOS, as well as on Windows.

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So if ever you have a USB thumb drive and you want to be able to share your USB thumb

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drive between all of these operating systems, VFAT basically is the only choice that you've

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got.

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NTFS is the Windows NTFS implementation, but enterprise distributions like Red Hat do not

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support it.

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And let's face it, there is no reason to use NTFS, because NTFS belongs to Windows.

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Linux has its own file systems that are taking care of file storage pretty decently.

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And the last file system mentioned here is BTRFS.

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This is to be pronounced as ButterFS.

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It's a relatively new Linux file system that offers many advanced features.

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But not all of these features are very stable, and for that reason, you don't find it as

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a default file system on the bigger Linux distributions.

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Let's continue with the next couple of lessons where you can learn how to work with these

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file systems.