Suggestion basic hardware

Dear all,

after having read a lot about drive pool, I'm thinking to updade my old WHS 1.

I have a very limited uses case.

1) Every week I sync all my files from main PC to the server

2) I would like to set-up redundant policy by folder (drive pool should be able to do it)

3) Every month I make a backup on an external hard drive to keep it in a different physical location

Considering I would like 4 HD, 1 SSD for the system and 3 HD for the pool ( i could use the same I have in WHS 1) to have 3 duplication for top files, what do you suggest as hardware?

Thanks

Maurizio