No clue about the OCZ Z drive... TRIM support should come for RAID arrays eventually, Intel (nor anyone else) just hasn't updated their RAID drivers in order to make it happen, but there's no technical reason (AFAIK) why it shouldn't happen eventually. In the meantime, OCZ drivers have GC to supplement TRIM (or the lack of it), and I believe you can always take the RAID array apart and run the Intel optimizer tool on their drives (Intel's).
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