I had a combination uh-oh/wow! moment back in those days when the hacked up NFS server I built on a Dell with Linux and XFS absolutely torched the Solaris and UFS system we'd been using for development. Yeah, it wasnt apples to apples. Yes, maybe ZFS would have helped. But XFS was proven at SGI and it was obvious that the business would save thousands overnight by moving to Linux on Dell instead of sticking with Sun E450s. That was the death knell for my time as a Solaris sysadmin, to be honest.