[HCoop-Discuss] Our ideal architecture?

[Adam Chlipala]

Davor Ocelic wrote:
> On Sun, 31 May 2009 09:23:48 -0400
> Adam Chlipala <adamc at hcoop.net> wrote:
>
>   
>> Use Xen virtualization on both machines,
>> so that we can create many virtual servers and move them among
>> machines as needed.
>>     
>
> For our purposes, I recomend openvz virtualization.
>   

I can think of a few reasons why we might prefer Xen.  First, I think 
Xen is more popular, so it's more likely to have had folks spend time 
implementing features, and it's less likely to have bugs in established 
features.  Second, the less tight coupling of VMs seems like it should 
rule out some potential security problems.

I'm nowhere close to an expert on this subject, though.  I recognize the 
benefit of avoiding loading a separate kernel for each VM, and of 
avoiding the need to poke each VM to update the kernel.  I hope other 
folks will share their perspectives on the pros and cons of different 
virtualization tools.