Originally Posted by deltahost
What you mean under "compatible"? All servers compatible.
This is not true.
ESXi has some limitations that it REQUIRES a hardware RAID controller to present a RAID protected data store. You _could_ hack together multiple drives presented to ESXi (as say datastore1, datastore2, datastore3, datastore4) and then setup software RAID in the guest VM's (Linux), however you would not be able to properly run RAID10 for a Windows guest.
To the OP, your best bet is to discuss with some providers and understand their experience. It is very important There are several things that can be done to really help your ESXi experience run better.
For example an Adaptec 5405 or an LSI 9260-4i type controller will run with ESXi without hassles, however an Adaptec 6405 will not.
If you have any specific questions about ESXi on a dedicated, I would be happy to provide you with additional answers.