Taking a look at RAIDZ expansion
In this video, I explore the process of expanding ZFS pools by adding a single drive to a RAIDZ vdev. This method simplifies the expansion of ZFS pools, making ZFS expansion easier than before. I look into the steps involved, the underlying mechanics, and the performance speeds during the expansion.
Here is a PDF that goes over how ZFS expansion works under the hood: https://openzfs.org/w/images/5/5e/RAI...