>> The additional cash will be used for research and development, expanding sales operations and building out its global infrastructure. The development might involve adding Microsoft Hyper-V support, greatly increasing Tintri's potential market and adding interest opportunities in Microsoft's channel. Deduplication may be of interest as well, although, as a hybrid flash-disk device, Tintri's appliance doesn't face the same cost problems as all-flash appliances do.
What about replication? Does it support replication? Most people need replication... storage efficiency is ok, but like you pointed out disks are plenty cheap compared to flash.