HANA minimal requirements

Hi

I read the following post which says you only need little hardware for installing HANA for pure sandbox mode.

http://scn.sap.com/community/developer-center/hana/blog/2013/05/08/how-to-install-the-hana-server-software-on-a-virtual-machine

However, I'd like to install an IDES system so there's some data for the developers to work with.

Now I read  2171852 - IDES ERP 6.0 incl. EHP7 on HANAwhich says I need at least 512GB RAM.

Questions:

1. Can I install HANA IDES on hardware/vmware with less than the recommended specification from note 2171852?
2. Is it startable / will I see a SAP Logon Screen?
3. What is the bare minimum hardware requirement to make 1. and 2. work, if I don't actually need "the HANA experience"

Regards, Vanessa