I followed you and Brian's contributions quite closely at my previous job. We had some pretty extreme backup targets for our VPS's and the old tools were starting to become bothersome; particularly for keeping a couple hundred million files sync'd between data centers. I knew about ZFS's send/receive but we were a linux shop.. About the time we(I) were going to make some major changes to the backup systems I gave ZFS another Google, as I like to re-check my assumptions every now and then, and discovered ZoL went "stable" just that month! I immediately pushed to give it a spin and the rest was history. Learning ZFS was fantastic fun. It challenged everything I thought a filesystem was capable off. L2Arc, snapshots(cloning and shared data wut?!), ZVol's, checksum's, and on and on and on. Thanks for all your hard work and making this possible!