I've read many different threads on virtualizing using Esxi in a server setting to host VM's and Hyper-V to accomplish the same thing. My whole interest in this was to create some VM's to install the OS's to handle all of my media needs, audio and video alike and to save on hardware. With that said,
I have tested Hyper-V under Server 2008 R2 for the past few weeks and I have to say it works pretty well. The only servers I have to test with was the SM server I gotten from Tams, which has worked pretty solid. For ESXi, I tested that on the AIC server and based on trying it out, it works well too and I was able to create some VM's on it. Unfortunately, it seems that ESXi is useless for me to use on the current server hardware I have since its picky on what it can use for passthrough. Plus the fact that the SAT2-MV8 (not SAS) cards aren't compatible, it looks like I will have to buy all new hardware and SATA controller cards just to make ESXi work more effectively.
This is where for me Hyper-V has a better advantage....i can mark a drive as offline to where Hyper-V can use it in its own VM, which I have tested and works. I was hoping to use ESXi as a good VM instead of Hyper-V but I will have to invest in new hardware to make it work so I will use what I have currently.
I'm using Server 2008 R2 (for the Ceton) and thinking of using WHS 2011 in a VM for all my client backups since I have two XP boxes so that leaves WSE2012 out. For media streaming I may use Remote Potato since it has better video format compatibility for streaming. I plan to try DrivePool for pooling and figuring a solution for data redundancy. I don't have any RAID cards and don't really see the need for them, just using the SATA ports with either FlexRaid or Drivepool should work for me, and backup critical stuff offsite (I don't bother with cloud services).
So for those of us using the servers bought from Tams, what OS are you running on your machines?