What are some alternatives?
When comparing StableBit DrivePool and mergerfs, you can also consider the following products
Drive Bender - Drive Bender, class leading storage pooling technology
mhddfs - The driver combines a several mount points into the single one.
OpenMediaVault - OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
unRAID Server - A scalable, consumer-oriented, server operating system.
Greyhole - Greyhole is an application that uses Samba to create a storage pool of all your available hard...
SnapRAID - A backup program for disk arrays. It stores parity information of your data and it recovers from up to six disk failures.