I think he might just be glossing over some details? At any rate, from what I understand ZFS has a 'zil' write cache for small log writes, and a l2arc for commo

I think he might just be glossing over some details? At any rate, from what I understand ZFS has a 'zil' write cache for small log writes, and a l2arc for common reads that don't fit into memory. This is just a dev setup, but for real work I think you'd want your zil to also be mirrored so you don't lose writes if an ssd goes bad. For anyone interested this link has a few more details: http://www.45drives.com/wiki/index.php/FreeNAS_-_What_is_ZIL_%26_L2ARC http://www.45drives.com/wiki/index.php/FreeNAS_-_What_is_ZIL...