[ovirt-users] Create gluster brick in oVirt engine, RAID-parameters

Hi, When creating a gluster brick in oVirt (host->Storage Devices->Create Brick), I have to fill in the parameters of the RAID volume the brick : RAID-type, number of disks and stripe size. My setup is DELL RAID Controler PERC H710 4 SSD disks raid5 Default stripe for Dell RAID-controller defaults is 64KB. I have no choice of a Raid 5 and if I choose Raid6, 4 or 3 disk, 64KB or 128KB Stripe. It does not work, (Failed to create brick data_ssd on host xxx of cluster Default). The only option that works is RAID type = None tried to find information about this, but no luck yet.. I tried ovirt engine 4.4.1.10 and lastest 4.4.7.6 Can I leave this to None ? Performance ? Thank you