If you are reinstalling the NAS operating system onto new OS drives, you will also need to partition the new drives. This section describes both how to repartition the new OS drives and how to reinstall the NAS operating system.
CAUTION: Back up the internal disk drives on your system before reinstalling or upgrading the NAS Operating System. The DVD reinstall process formats or deletes the OS disks (virtual disk 0) resulting in loss of any data or installed applications. The DVD reinstall process does not install RASR USB Recovery application.
The standard RAID configuration varies depending on the system: