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#11
No RAID array is sufficient for backup. Since data needs to be backed up anyway there's really no need for RAID which Windows 7 doesn't much like. In fact we only see problems with RAID here.
Have you plugged the drives in separately in DIsk Mgmt to see if they're seen, what status it says for the HD. If it's not recognized as a partition, you can try creating one but don't format. Is the data seen now?