I have quotes for all three - Tegile (HA2100,HA2300), Tintri (T650), and Compellent (SC8000).
I love how easy the Tintri was to setup and how it performs automatic I/O alignment. The main thing I dislike about it is the lack of enterprise grade hardware (consumer grade MLCs, SATA vs SAS) and the lack of compression on the mechanical disks. The Tegile has enterprise grade hardware (SAS, eMLC) and it does deduplication/compression on all disks (SSD and HDD).
The Compellent, well, every storage vendor tells me they are bad, don't go with them, but I honestly feel it's a case of "that's my competitor, buy my stuff!."
Dell gave me a fantastic deal on a Compellent array with 12 TB of SSD (6 pack SLC 400GB/ea, 6 pack 1.6TB/ea eMLC) and a tray (x24) of 1 TB 7200 rpm disks. I dislike that this array moves data based on a schedule - once a day in 4K pages. However, it's saving grace is the large amount of SSD and the fact that they are adding compression into T3 this September.
Any experience with any of them? Right now I'm an all HDS shop (Hitachi, AMS and HUS). I dislike these SANs. They are solid but offer absolutely no innovation.
Compression/Deduplication is a huge deal for me as most data is cold and is def. very compressible. I'm done with paying for space I don't need. Compression and deduplication is the answer. I should be able to put a 30 TB box in a 4U space that has the efficiency/capacity of a 120 TB SAN. I know the Tegile can do this, but the entry level model they quoted me is pricey and has a low amount of SSD.
Tegile is not as reasonable with pricing as they would try to tell you.