Dell EMC UnityVSA - dell-emc-unityvsa-overview-deployment
StableBit DrivePool - State of the art, file based drive pooling software.
PetaSAN - PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.
btrfs - Btrfs is a modern copy on write (CoW) filesystem for Linux aimed at implementing advanced features...
Open-E Data Storage Software SOHO - Get Open-E DSS V7 SOHO (Small Office Home Office), a free version of Open-E DSS V7 with basic functionalities of NAS/SAN software platform.
Greyhole - Greyhole is an application that uses Samba to create a storage pool of all your available hard drives, and allows you to create redundant copies of the files you store, in order to prevent data loss when part of your hardware fails.