The RAID-0 in question is run by an Intel RAID controller in a Gigabyte Z77X-D3H. It is a 2x320GB RAID-0, comprised of two different model drives. The working one is a 320GB Western Digital (whose model is not currently viewable) and a Seagate 7200.11 model ST3320613AS. The RAID controller reports that the Seagate drive has failed, and listening to it make a strange warbling noise repeatedly seems to confirm the diagnosis.
After dropping it in an external USB dock (in which it didn't make the warbling noise) and doing some research, I began a sector-by-sector copy using HDD Raw Copy Tool 1.10. The Seagate is currently being duplicated to a much larger 1TB Western Digital. At one point it stalled for a few seconds and displayed "Read Error occurred at offset 1,530,855,424; LBA 2,989,952 (Uncorrectable error)", but then continued on its way (as the tool's website advertises it can do) and has yet to throw any more errors. It seems as though the Seagate is suffering from a bad sector, and hasn't outright died, however I'm not sure how to fix this and I'm wary of making any attempts lest I screw up its status in the RAID.
Thus, my question is, since I am apparently able to create a clone of the dying Seagate, can the drive it's being cloned to take its place in the RAID-0 array? Or the is the original drive the only one that can be there? Solutions found so far have been to copy all the data off the failing array to somewhere safe, but that is not currently an option as the machine the RAID is in has so far refused to boot if the Seagate is installed.