SSD for databases (data, log and tempdb) any recommendations?

Hi all -

I am working on a project to migrate to new ASE environment but the HW layout is all SSD. this layout will be used for data, log and tempdb included.

While I have worked on using tempdb, log for SSD , this is my first to out data (database devices also on SSD).

any recommendations on how many data devices and the size of the data devices on these SSD?

Thanks,

Malathy