Partial open-source, but it works both ways....

What, no Sunshiners squealing on about how Slowaris x86 "is ZFS"? Well, it is at least until NetApp get through with kicking Sun around in a courtroom! In the meantime, Sun has a bigger problem - Linux has an established and very large base of very clever people coding for it, the majority of them for free. This is a massive resource Sun can't match, and there is nothing to stop the Penguinistas taking anything out of Slowaris x86 and rewriting it into Linux if they think it is worthwhile. Should ZFS look remotely worth the trouble (which I don't think it is), there is nothing to stop the Linux crowd writing their own equivalent. If Dtrace is even worth half the amount of screaming heard about it from Sunshiners then the Penguinistas will simply write their own version for Linux. And before the Sunshiners start on how there is no way the Linux crowd could do that, they may want to consider that was what Scott McNeally was telling Slowaris customers years ago before Linux went and ate half Sun's business.