Red Hat Gluster Storage provides the ability to create bricks on encrypted devices to restrict data access. Encrypted bricks can be used to create Red Hat Gluster Storage volumes.
For information on creating encrypted disk, refer to the following product documentation:
For RHEL 6, see Disk Encryption
Appendix of the Red Hat Enterprise Linux 6 Installation Guide
For RHEL 7, see Encryption
of the Red Hat Enterprise Linux 7 Security Guide