[one-users] Storage architecture question

[Gary S. Cuozzo]

Hi Users, 
I am running ONE 3.6 and would like to be able to run a combination of shared storage (via iSCSI) and local storage (to take advantage of local disk performance for certain applications). My question is related to the local storage aspect. 

>From what I've seen, I can use a local datastore and the ssh TM to accomplish local storage. The drawback that I see is that I need 2x the amount of disk space because I need storage for the permanent image on the controller node, then storage on the local host for the running image when it is deployed. A secondary issue for me is that the images have to be transferred between the datastore and the host machine, which will take some time with larger images. 

To get around the problem, I thought I could set the datastore up as a shared filesystem, except the sharing would actually be from the host machine to the controller machine via NFS. Is there any particular reason(s) that would be a bad idea? On the surface it seems like it should work just fine, but I'm somewhat new to ONE and want to be sure I'm not going down a bad path since I plan to do this with several host machines. 

Thanks in advance for any advice. 

gary 

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