Technology chart used for OS, RDBMS, Storage

Hi All,

I would like to know which all HW & SW technologies are used for full virtualization in OS(unix,linux,windows), RDBMS(Oracle, Sqlserver, Teradata), Storage (SAN/NAS/CAS)(IBM, EMC, Hitachi, NetApps etc ...) and Backup(Netbackup).

If someone could help with a link or pdf where I could find top 5 popular HW and SW used for all above given Infrastructure technologies would be appreciated.

Thanks.
Mangesh