More scalability | NFS vs Amazon S3

Hi folks,

I need your advice,

Now We're using amazon s3 for storage and running cdn.(amazon cloudfront)

Amazon s3 have some advantages for example if we use amazon,we can use global network and we don't need a storage server, but there are some advantages of NFS (network file system),for example our s3 plugin not support delete media files on s3.But if we use nfs,more effective use of some features of wordpress.

Is there a limit to file creation on NFS?
For example, how much data edublogs store today?

I make a choose NFS or S3?

Waiting for your suggestions.

Thanks.