And the EnhanceIO solution.
That's nice to hear. I didn't see the EnhancedIO in the NetApp links I saw. NetApp could have rolled their own software, but I wouldn't be surprised if they went with EnhancedIO. Saves NetApp a few bucks in engineering costs.
I recall Mark M.'s mentioning in an interview that EnhanceIO was the only cache solution that passed all of NetApp's suite of tests.