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    |   xen-users
Re: [Xen-users] Best practice for Dom0 
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- Does it prefer that i use Dom 0 only for Xen Hypervisor ?
 
Dom0 doesn't run the hypervisor, it runs *on* the hypervisor; the only 
difference from other domains is that it's allowed to access your network, 
disk, graphics devices directly. 
But it's good practice not to run unnecessary services in dom0 - put them 
in domUs instead. Dom0 has root-equivalent privileges on every domU on the 
machine. 
 
- If yes, how much ram i need to reserv for Dom0  ?
 
I think 128Meg is solid for a lot of people, but it varies depending on if 
you're doing RAM-intensive things in dom0. 
 
- Are there a link between amount of ram in Dom0 and number of virtual
machine run on this computer ?
 
The more RAM you give to dom0, the less RAM is available for other domains. 
RAM for domUs comes from the host system, not from dom0. 
Cheers,
Mark
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