Author: Tiger Wang Date: 2022-12-31 Tags: dashboard

Happy New Year, CasaOS users!

While everyone is excited to kick off the new year, we want to disclose a hidden beta feature that was shipped in CasaOS since version 0.3.8, for advanced users who love to try new things.

This feature in CasaOS integrates with MergerFS, a union filesystem that allows you to combine multiple storage devices into a single virtual storage device. With this feature, you can easily access and manage the combined storage space of all your underlying devices through the /DATA directory.

Please note that this feature is currently in BETA and may still have some bugs or issues that need to be ironed out. There is also a risk of data loss and running apps resetting when using this feature, so please use caution and consider making a backup of your data before enabling it.

If you are ready to enable the feature, simply run the following commands after backing up your data and apps:

sudo apt-get --no-install-recommends install mergerfs
[ -z /var/lib/casaos/files ] && sudo mv /DATA /var/lib/casaos/files
sudo rm -rvf /DATA && sudo mkdir /DATA
echo "EnableMergerFS=True" | sudo tee -a /etc/casaos/local-storage.conf
sudo systemctl restart casaos-local-storage.service

Once enabled, you can access the feature in the Storage Manager from the CasaOS dashboard.

We would love to get as much feedback as possible from users who are interested in trying out this preview feature, before we officially making it generally available for all users. If you give it a try, please let us know how it goes and share any feedback or suggestions you have at

Thank you for your continued support of CasaOS. We hope you enjoy this new feature and we look forward to hearing your thoughts on it.