Do I need some other licenses or subscriptions like XFS, Red Hat or is everything included in QuantaStor release?
No additional licenses or subscriptions are needed with a QuantaStor system.
QuantaStor is an operating system so it does not install on top of any other Linux distro.
All software (XFS, ZFS, Ceph, Gluster) is all pre-installed an included in the QuantaStor operating system / platform.
Additional information can be found at the link below: