Biased HP Storage Guy here but I think there are a LOT of reasons to go 3PAR:
•One platform for entry midrange, through tier-1, all-flash, hybrid, all HDD, block, file, and object - I don't know of any other vendor that can do what we do with a single architecture.
•Fastest growing all-flash in the industry over the last year from number 10 to number 5 and growing at 1069% year over year. This is important because the move to all-flash is inevitable. You can be confident when you need flash that 3PAR will be a great choice. Most of the other storage vendors had to go acquire an all-flash array because their existing arrays are not optimized for flash.
•VVOLs support - not sure how important that is to you but HP 3PAR was not only first but was the dev platform that VMware used. Someone correct me if I'm wrong but last time I checked VNX still doesn't support VVOLs. You'd think with EMC owning VMware they'd be first. Not sure why that is but it is.
•An entry HP 3PAR StoreServ 7000 starts at around $20K; an all-flash starter kit is around $35K and that will drop dramatically when we get the 3.84TB SSDs into that solution. And all of these are built on the same 3PAR architecture with enterprise-class data services.
•HP 3PAR has some major architecture advantages over VNX (and other traditional arrays). I did a video a couple of years ago that I need to update but it still has good information. The big thing that was added since then is ASIC enabled deduplication. https://youtu.be/TDuYiH4TnD0
•The ASIC is a big part of the special sauce. It offloads the CPU by managing: wide striping, RAID calculations, fast rebuilds, reservationless snapshots, reservationless thin provisioning without performance caveats, inline dedup and zero reclaim. In an all HDD 3PAR, we almost never saw the CPU as a bottleneck.
•And with regards to Veeam, I think HP was the first storage vendor to integrate with Veeam. I have a demo that I did at VeeamON last fall that shows it. https://youtu.be/FHOTcQ-3iTA
There's more coming too but can't talk about that publicly.
I'll also point out that the migration to HP 3PAR is pretty easy. We have HP 3PAR Online Import for EMC Storage. Here's a demo I have showing that. https://youtu.be/FmXmD9U4h74
Happy to answer any questions. Feel free to email me at calvin dot zito at hp.com.