troubleshooting Question

Storage Spaces, SOFS and Shared SAS JBOD Redundancy

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convergintFlag for United States of America asked on
Server HardwareComponentsWindows Server 2012Dell
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I've spent many hours online reading different articles on Server 2012 R2 storage spaces so please refrain from posting links as I need more real world comments and experiences.

My goal is to have two servers for Scale-Out File Server (SOFS) clustering using storage spaces connecting to two JBOD enclosures with full redundancy.  I understand that you need a JBOD enclosure without any RAID abstract layer for the server and to get full redundancy you would need a shared SAS controller to allow each server a connection to each enclosure.

It seems like you also need to use the enclosure awareness feature to support the failover of an enclosure but for some odd reason it requires three enclosures (yes I've read the MS articles but it still doesn't make 100% sense).  The HCL list is also pretty sparse right now with only DataON, RAIDInc, Fujitsu and a few others officially supported.  http://blogs.technet.com/b/privatecloud/archive/2013/04/05/windows-server-2012-about-clustered-storage-spaces-issue.aspx shows an example of two servers and two enclosures but I don't get how it would be possible to have three enclosures.  All the sparse hardware I've found seem to only support two SAS connections per enclosure.  I'm assuming that the theory is supported by Microsoft but there's no easily obtainable hardware that exists yet.

Would it be possible to have each server connect to only one enclosure and then mirror the storage spaces enclosure on each sever?  If the SOFS is clustered over the two servers, shouldn't it be able to handle an enclosure failure?  Finding a shared SAS controller doesn't seem to be easy and I do not want to use a SAS switch as that is another single point of failure.

Has anyone tried storage spaces with a Tier 1 manufacturer's enclosure, ie Dell, HP and make it work in a JBOD?  I am hesitant to use DataON and RaidInc as I have no experience with these manufacturers and worried about support.
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