NAS multiple drives

[MarkHaysHarris777]

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I plan to start with just two drives, using a powered USB 3.0 hub and separate USB to SATA cables for each connected to the hub.  Will there be a problem detecting the drives like this?  Also could I keep adding drive to the hub like this (don't ever see wanting more than 4)?
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I just added a PNY CS900 240GB internal SSD to my Rock64 via usb|sata adapter cable , powered via Belkin powered hub;  this works great, btw.

I mention this because its the only real-world example I'm actually familiar with to-date;  the PNY draws a whopping nominal 1000ma -- 1A  is a lot of current today !  My powered hub can support 3A;  so I'm not putting four (4) PNY SSD(s) on this Belkin hub !

There is another option.  The usb|sata adapter from the pine store ( please see this link ) has an external power port labeled  12v  @2A;  the port is a barrel jack plugin.  With this setup each SSD can have its own external wall wort,  so that the hub does not have to carry the load for all four drives.  

The next thing is cost.  I priced out PNY 1 TB drives last night;  because they are on sale right now at BestBuy, and because I'm also interested in the experiment.  Its not the size of the drive that you'll find to be the problem ( because it isn't ) rather the cost of each drive !  --  even on sale the PNY TB drive ( SSD ) was $286 usd ( you do the math, just multiply by 4 ).

So you need to decide if you want to make a $1200 dollar investment in a NAS server centered around a $46 dollar SBC !?!