Cache drive(s): SSD or not, and how many?

[French-Guy]

Hello,

I'm running 6.6.5 Unraid , pretty much a vanilla server for now

Got some issues with some of my drives when upgrading my parity, and received great support from some members. THANK YOU ALL

I'm thinking about adding a cache drive.......Mainly to speed up the transfers from my laptop to the server (wifi)

Should I go SSD or regular drive?

Should I look for a minimum size?

Should I already think ahead and may be have more than 1 cache drive (cache pool?) assuming I upgrade my mobo and cpu in a near future and wantto do more with my server?

 

Thanks