You don't need RAID for that, Windows is able to build logical volumes that span acros multiple physical disks. JBOD will do just fine. RAID cofigurations have other purposes. RAID = Redundant Array of Inexpensive Disks. Hence the "redundant".
But when it comes to data safety, a multi disk volume it's a poor choice. Any file system has some kind of TOC. If the supposedly failing drive is the one holding the TOC, everything is lost. In terms of speed, it's also a poor choice.
If data safety is not the main concern, then RAID 0 is your choice, as it offers you improved speed.
Why is RAID 0 not ok with you? Storing data on a JBOD volume will not be a lot more safer than on a RAID 0 disk, especially if the volume spans over only 2 or 3 disks. The probability for the TOC hosting drive to fail is pretty high.