I want total control, so a Synology NAS box setup with two disks in a mirror, 1 SSD as cache, and one hot failover. All laptops backup to it. It backs up to a

I want total control, so a Synology NAS box setup with two disks in a mirror, 1 SSD as cache, and one hot failover. All laptops backup to it. It backs up to amazon s3 and to a second synology NAS.