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</head><body><p class="io-ox-signature">Kevin,<br><br>I must agree with Patrick. I used ZFS on our metadata servers, and found an immediate reduction in performance over ldiskfs. Now, there are a lot of factors involved in performance, but in our case, ZFS for MDTs was not the best choice. That being said, I have not tried it on SSDs... yet.<br><br>Regards<br>--<br>Charlie D Whitehead III<br><br></p></body></html>