I'm having my iSCSI attached servers losing their connection to the SAN after 4 - 6 hours.  I have two 6224's.  One dedicated to SPA and one dedicated to SPB.  I do not need to use any of the advanced features of the 6224's.  I basically plugged them in - right out of the box and had the disconnection issues.  When I bypass the 6224's, and plug directly into my Storage Processors, the connections with stay up forever.  What setting changes do I need to make for this to work reliably?  Simple is good!  I don't need to use these switches for anything other than connecting the iSCSI servers to the SAN on our tiny network.