Where can I get information about sold Cloud H/W spec

[Lee Chunki]

Hi,

I am trying to build sold cloud.
Do you know where can I get informations like :

* solr cloud support heterogeneous servers
* HDD
   * SDD vs. SAS vs. ….
   * no RAID vs. RAID-5 vs. RAID-0 vs. ….
* Network
   * 100MB vs. 1GB vs. ….
* ….

of course, it will depend on data size, traffic and so on.
but please let me know general or  minimum H/W spec.

Thanks,
Chunki.