Thanks @garethw Mr. Gareth.
All you said are very helpful and direct to the point.
This raid1 configuration is made by FreeNAS and i have totally passing the drives to FreeNAS, so i’m guessing is software Raid (ZFS) since i’m not using any RAID controller.
Truth is i have a secondary backup using GoodSync from FreeNAS box to another FileServer running Windows 10 and storage spaces Pool again using software Raid1. This machine runs also disaster backup to USB3 hard drive. so primary data + 2 backups.
Maybe in the future implement RSync from FreeNAS to Synology, since both are supporting this protocol, and maybe snapshots?? I’m new to this and I’m still experiment a little with all and different storage solutions (FreeNAS, Windows 10 and Server, Synology, Xigmanas etc…).
What is your suggestion for a solid organization ? Thank you.