Home LAN with NAS and Cable Gateway Question

[Joseph_Sherman]

Setting up home LAN with 3 desktops, QNAP NAS with 2 NICs, and a cable modem/router/gateway from Comcast. I plan to use the NAS as shared file storage for 3 desktops (large shared files used daily) and want to know if I need to buy a Switch or Router (that supports LAG for the NAS) to hook all this together?

My crude diagram:
Internet --> Gateway/Cable/Modem/Router(4 ports) --> Switch or Router w/LAG? (6 or more ports) --> NAS & My 3 desktops? = happy fast file sharing and internet access?

Because I already have a router in the Gateway Cable Modem, can I just use a switch that supports LAG and connect everything to it? Is this the best way to do this or is another configuration/equipment better? Can anyone recommend best Switch or Router for this configuration?

 

[kanewolf]

LAG probably won't change much with so few hosts. Each host will be limited to gigabit throughput. LAG can improve throughput when there are a lot of simultaneous connections. With 3 PCs you won't see any significant change.