[Pvfs2-users] Does this Architecture defeat the purpose of PVFS2 in Anyways?

[sonatabar bar]

Hello PVFS2:

Compute Cluster Architecture:

Top most Layer: Frontend+Compute Nodes AS PVFS2_Client

Next Layer: GigE/Infiniband Interconnect

Next Layer: A Metadata Server & Bunch of PVFS I/O
Nodes

Bottom Layer: A Separate Storage array for each I/O
nodes.

With the above architecture in mind, I plan to create
a huge pvfs2-storage pool from all of the storage
mounted on the I/O nodes. This large pvfs2-storage
pool will be  mounted on all of the compute nodes and
the front end of the clusters from the PVFS2 I/O
nodes.

I just wanted to get a heads up on this architecture
if any. 

I have read FAQ's and more, look forward for any
caveats anyone can think of. 

Thank you - í