After installing driver version 11.2.01006 and backing up my OS partition, rebooted and changed the SATA type to RAID, saved it and rebooted. The RAID dialog of the BIOS came up. Hit control-I and enabled both SSDs as the RAID device. Set the RAID type to 0, 64K stripes.
The RAID dialog said that the structure was created and it was the correct size, the size of both SSDs combined. Then I booted the Macrium rescue disk and restored the OS partition, Disk C. Admittedly I was not quite clear what was going where.
Rebooted at which point i ran into trouble. It wouldn't boot. Used F12 to to boot from SATA#1. Wouldn't boot normally but it did boot in safe mode. It showed diskc but the second SSD(SATA#0) was not visible. Ran the SAMSUNG utility which showed one structure of double the size of a single SSD. The utility can do performance tests, the read and write speeds were both over 1,000 M Bytes per second or exactly twice the single SSD speed.
My belief is the hardware part of the RAID structure was established but the 2 SSDs were not properly defined to the OS. From the OS perspective, the second SSD was not visible.
BTW, i turned off RAID and re-established both SSDs and recovered the OS partition. This takes 12 minutes using an internal hard disk as the backup. I used the disk management software to build a partition on the second SSD so it is now usable.
I'm going to carefully review the instructions and try again. Any thoughts?
Thanks for your help,