We currently have a Windows 2012 server for our 5 user office. After an incident last year where a power cut corrupted the windows installation, I'm looking to eliminate the server as it's wholly un-necessary. We only use it for file storage as everything else is in the cloud. At the moment for backup we use crashplan, this backs up data to the cloud and versioning is included in case the server gets a cryptolocker virus or similar. I was thinking to replace the server with a NAS, maybe by QNAP or Synology with 2 or 4 drives in Raid 1 configuration in case of hdd failure. The only thng I am struggling to find is a cloud based backup solution for these drives. Synology offer hyper backup and cloud sync, will these have versioning in case the files become corrupted and then backed up? Does anyone have experience of these solutions? Thanks!