64bit

Hello, I am planning to build a 7/24 home NAS with emphasis on low power consumption, low (preferably zero) noise with 2x3.5" SATA HDDs but I could accept 2.5". The OS choice is not final yet it could be any of FreeNAS, OpenMediaVault, OpenBSD, NAS4free, TrueNAS, TrueOS. I know it is many but I...