  Absolutely incorrect. There is nothing "insecure" about the H7x0 controllers. You should not need to do a backup/restore to go from an H310 to an H710 - the H710 should pick up the virtual disk from the H710. Changing the controller will not require a backup/restore, but changing to SSD will. You cannot mix HDD and SSD in the same virtual disk (array), so you could not swap/rebuild one drive at a time to change them out.
I've this config: Hardware PE R420 with single CPU, 64 Gb RAM, N. 3 HD 1 TB SAS - RAID 5 with hotspare, Perc 310, Windows 2012 R2 with Hyper V enabled. about 3 Virtual Machines, VSS disk queue is disabled in the network adpater. Windows and Firmware is up to date. General disk performance are low and i'd like to increase I need some advice, change controller or disk with SSD ? Is it possible, i don't want to reinstall all SO !! :(
Dell R420 & SSD