GlusterFS as datastore

I have a repurposed 8 node ScaleStorage appliance rebuilt with glusterFS. Have has it in use for over a year and used for small backup jobs from bareos.

Was considering using it with PBS since it appears to be more efficient method on disk space.

So, before I disturb my current setup.....

Anyone have any working knowledge using GlusterFS as a datastore?

Current have had great luck using attached scsi and iscsi disks ( not so much with NFS, but thats old news )

Thanks