Netapp way behind
Thin provisioning and de-duplication are different.
Netapp have only picked de-dupe up recently – check the registers article here:
http://www.channelregister.co.uk/2007/05/15/netapp_releases_standalone_asis/
EMC acquired Avamar ages ago.
Given this who do you think has the better product....? ummm let me think about that for all of 2 seconds...