Check the replies from the "Mrigrate RAID 0 to a new RAID 0 volume" there maybe some help for you there.
With the Intel Matrix Storage Manager, it is not possible to perform a migration that results in fewer disks or results in a smaller volume, so your migration from a 3-disk RAID5 to a 2-disk RAID0 is not supported. However, there may be another, easier, option.
You say that one of the disks on your RAID0 is "on the verge of failing." Does this mean that it is reporting a SMART event, or is marked as Failed in the by the Intel Matrix Storage Manager? (either in the Windows UI or the OROM that shows up right after the BIOS?) If so, then add your new hard disk to your computer and open the Intel Matrix Storage Console in Windows. Right click on the new disk and select "Mark as Spare." The driver will start a "disk replace" operation. When it is completed, your new disk will have replaced your failing disk in the volume.
Thanks Mike, your reply was very informative. I didn't know about 'spares' :-)
This is a test
I'm having a similar problem and your proposed solution sounds attractive. I too have a two drive, RAID0 configuration array. The drive connected to Port0 is showing up in Intel Matrix Storage Manager as "error occurred." As to avoid a possible data loss, I'm thinking about simply replacing it using your steps.
My question is as follows:
If I add a third drive and select "Mark as Spare," once that effort completes, would I then be able to remove the suspicious drive on Port0 and be able to use the computer as normal?
Thanks a lot for your insight!
Have in mind RAID 0 do not offer redundancy, so, any change on the drive configuration will cause data loss.
You can get rid of "error occurred" by recreating the RAID structure.