I will limit my question to two products then, namely Xensource's and 
VMWare's products.
Anyone ?

Johan

VLIZ
Flanders Marine Institute

Troy Dawson wrote:
> Hi Johan,
> XenExpress, XenServer, and XenEnterprise are all products of 
> XenSource, not RedHat.
> They are all "added value" that XenSource adds to Xen.
>
> RedHat starts with Xen and add's their own "added value".  Their 
> limitation of 4 concurrent VM's is a support limitation.  Basically 
> their way of saying "If you do this, and it breaks, don't come runing 
> to us."
> BUT ... there is a hardware limitation that I've been seeing.  
> Basically if I try to run too many virtual machines on a machine 
> without enough memory, at some point I get a "Hay ... you don't have 
> enough memory to squeeze in another virtual machine" message.  It 
> doesn't really say that, but that is what it means.
>
> So back to your questions.  I'm not going to answer them, but I am 
> going to point out that you really are asking to compare 3 different 
> products, not two.
>
> You want to see the comparison between XenSource's products, VMWare's 
> products, and RedHat's Virtual Products.
>
> Troy
>
> Johan Mares wrote:
>> I've posted previously about Xen. But know I have some more specific 
>> questions.
>>
>> In RHEL5 Xen is limited to 4 concurrent VMs, which could mean that 
>> RHEL5 ships with Xen Express (the free starter package). In one of 
>> the replies on my previous post it was mentioned that there were no 
>> such restrictions on the number of concurrent VMs in SL5. Can someone 
>> give an explanation for the difference in concurrent VMs for Xen in 
>> SL5 versus RHEL5 ?
>>
>> Without having  to rtfm, what is Xen 3.0 in comparison to XenExpress 
>> (free version), XenServer (only Windows) and XenEnterprise (windows 
>> and linux) ? Is Xen 3.0 the basis on which the other 3 are build and 
>> then you just pay for the comfort of someone else having done it for 
>> you, some management tools and the support ?
>>
>> Can someone compare Xen (free & commercial) with VMware 
>> Infrastructure (starter to enterprise) ? When to use what ? 
>> Difference in features. Because VMWare Infrastructure , especially 
>> the enterprise,  has a serious price tag.
>>
>> We would use virtualization for webservers, files and mysql-database 
>> servers, grid-computing, ease of setting up test and development 
>> servers.
>>
>> thanx,
>>
>> Johan
>>
>
>