On Windows I can use NTFS drive compression to save heaps of disk space; usually 30%, often much more. It also improves read and write speeds at the cost of higher CPU usage; which isn’t an argument in my situation with CPU power to spare.
So on my Windows machines it’s always enabled. Is there a similar function on Ext4, or is there a different file system on (Ubuntu) Linux which supports compression? If so, how can I migrate my Ext4 file systems to that compressed file system?