We use the hybrid version of Microsoft Azure Block Storage. We have a client based in the UK who utilizes the hybrid cloud. We also have a couple of archiving solutions there, as well as NetApp on TapCloud.
The NFS solution goes into that, deployment is purely on the Azure cloud. The production areas and archiving solutions are mostly done on-premises, while testing and application development in some areas is purely cloud-based.
Block storage is used for the data that is configured for our servers. We have it for auditing purposes and as a compliance method.