Comment Backblaze, Amazon S3 or Google Storage (not Drive) (Score 1) 241
Backblaze, Amazon S3 and Google Storage all provide great cloud backup capability.
What you need tho is the NAS to support sending your data to your preferred provider when required - daily, hourly and so on. Additionally, you want to be able to store that data encrypted at rest either locally and store (or optionally the unencrypted data) the encrypted data in the cloud as well.
Have a look at MyNAS Storage Appliance (www.mynas.com.au) as it seems to have the cloud replication, encryption and local data integrity part sorted out