Using ENBD for neat abstraction and network data transpor

Hi all

We have a system with a number of clients running an embbedded linux variant. 
The clients must reliably transport their data to the server. Network failure 
must be taken care of in an efficient way (not like NFS does). The data 
transport is unidirectional. 

The idea is to share space in the server for the client(s) to access via ENBD. 
The clients write in the space and the server reads from this space. 

The discussions that I found on the internet mentions kernel cache and file 
system cache as the two main probs in this architecture. Is there a way to 
use ENBD for this? 

The embedded system is too small for one of the heavyweight filesystems as GFS 
or their equivalents.

Best regards,

Frans