We are in the middle of a storage upgrade project. Upgrading from an EMC NS-480 to an EMC VNX 5500.
72TB usable space. A mix of SSD/EFD, SAS and NL-SAS. Using EMC's FAST Suite which comprises of FAST Cache and FAST VP (auto-tiering). Also bought additional EFD's for additional Cache.
Replicating right now to our DR site which has a VNX 5300 (42TB). Using VMWare SRM for DR.