NETGEAR RNDP6620-100NAS - ReadyNAS Pro RNDP6620 Business Edition Software Manual page 52

ReadyNAS for Business RAIDiator 4.2.17
Once that's done, you should be able to select which type of RAID array you wish to create,
as well as which drives it should be created on:
After creating the volume, you will be prompted to restart the device before the volume is
added:
If you have already put data on it, and the RAID level is X-RAID2, you will need to backup
your data and start again.
Managing Your ReadyNAS System
52