I have Proliant ML330 G6 with two 1TB Seagate Baracuda drives. I created RAID1+0 logical disk(the only other option was RAID0). Here's what happened during ESXi and Windows Server 2012 Datacenter Server Core only installations:
ESXi 5.5.0 - Instead of RAID it was my two drives as plain SATA. So I could pick one or the other to install ESXi on. Installation was a success but my gripe with ESXi is that it didn't see a single logical RAID disk with size of 1TB.
Windows Server 2012 - Didn't see RAID too. Downloaded HP Smart Array B110i SATA RAID Controller from here:
http://h20564.www2.hp.com/hpsc/swd/public/readIndex?sp4ts.oid=3958194&swLangOid=8&swEnvOid=4138
Applied the drivers during installation. A single RAID drive showed up but Windows said it couldn't install itself on it. And told me to check if my RAID is enabled.
So, my question is why neither of them worked properly with RAID. Is Proliant's hardware/software not suported by these hypervisors or can you actually make it work somehow(how?)?