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I guess this could have merit, but ONLY if it allows the read-only sharing
of the OS, library, and application memory images. There are plenty of reasons to run multiple instance of the same OS, but almost NO reasons to run instances of DIFFERENT OSes on the same box. Any shop of any scale will dedicate each box to multiple instances of ONE OS. The multi OS thing is ONLY for very small shops and for testing.

I am not sure why you guys keep reporting about the merits of running instances of different OSes on the same machine as if it were the Holy Grail of virtualization. That is not useful at all for all shops of any size (other than for testing maybe).
Posted by: DonnieBoy   Posted on: 09/18/07 You are currently: a Guest | Members login | Terms of Use
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I guess this could have merit, but ONLY if it allows the read-only sharing  DonnieBoy | 09/18/07
Where you at?  yyuko@... | 09/19/07
Agreed. Running multiple...  bjbrock | 09/19/07
No, you do it for islation, so that each customer gets their own server, or  DonnieBoy | 09/19/07
Get out of the box  yyuko@... | 09/19/07
Again, only good for small shops. A shop with any scale with have multiple  DonnieBoy | 09/19/07
That is only for SMALL shops. When you run more than one OS, you waste a  DonnieBoy | 09/19/07
You need to go back to virtualization school  yyuko@... | 09/19/07
Right, so why can't you give even one valid reason for a large shop running  DonnieBoy | 09/19/07
You forget...  civikminded | 09/19/07
Ok, and I did not realize that VMWare could share memory pages between  DonnieBoy | 09/20/07
No, he's got a point.  Resuna | 09/20/07
Don't forget OpenVZ. It is a very good choice for Partititioned OS  DonnieBoy | 09/20/07
YOu really are clueless on this topic, aren't you?  B.O.F.H. | 09/19/07
You can't read?? Yes, Virtualization is good, but there ARE different types  DonnieBoy | 09/19/07
According to you we must be a small shop ...  dwjunix | 09/20/07
You have hundreds of servers and you bother mixing OSes on a single box?  DonnieBoy | 09/20/07
target boxes w/ extra capacity  dwjunix | 09/20/07
Still, you have more memory, it uses more electricity. That can be quite  DonnieBoy | 09/20/07
Another thing, with a given size chache, you get better performance if you  DonnieBoy | 09/20/07
Ouch  guymar | 09/21/07
You can do that now with FreeBSD Jails  Resuna | 09/20/07
Thanks, and yes, BSD is a very good option considering the security and  DonnieBoy | 09/20/07
Server Virtualization: Single vs. Multiple OSs - Both are useful  Filker0_z | 09/21/07
Sure, I could see doing a little mixing, but keeping almost all dedicated  DonnieBoy | 09/22/07
Here is a link to a wikipedia article to better understtand the different  DonnieBoy | 09/19/07
Blades suck for virtualization...  Uber Dweeb | 09/19/07
Virtualization can work very well on a blade, but ONLY if you use the  DonnieBoy | 09/19/07
Buy a clue...  Uber Dweeb | 09/19/07
Sure, you pay for what you get. But, blades can easily run a number of  DonnieBoy | 09/20/07
Blades are not designed for virtualization.  B.O.F.H. | 09/19/07
Blades  civikminded | 09/19/07
Thank you! Not sure who got the idea that a particular form factor does  DonnieBoy | 09/20/07
RE: With hardware-based hypervisors, Hitachi says 'ditch software like Xen, VMware'  civikminded | 09/19/07
VMware ESX3i  nsmallcomb@... | 09/20/07
Software is software  Resuna | 09/20/07
RE: With hardware-based hypervisors, Hitachi says 'ditch software like Xen,  jfryan1@... | 09/21/07

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