Pi with more space

I wanted to get more space on Pi so that I can put documents and pictures and I can access them from anywhere. To do this, I will need to attach a hard disk to the Pi since the space on SD card is very limited.

My friend Phua, suggested this expansion board support which is looks like the solution for my project. Then it can be put in a nice metal case with coolling fan.

Note: 

- check if Phua is getting this himself

- where is the power come from to power the hd