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sam15
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Does Vmware mostly runs on windows server? is it available for unix or linux

which is most popular O/S for Vmware?
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Senior IT Advisor
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Top Expert 2008
Commented:
The most popular installation is ESXi and it runs on it's own Operating System.  On top of it you can install practically and flavor linux, windows, etc..

For small developers VMWare Workstation runs on Windows and VMWare Fusion runs on MAC.
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Commented:
VMware's ESX product is a stripped down Linux (RedHat Linux, to be exact) OS on top of which VMware layers their virtualization and management software. It doesn't run on Winblows.

Not sure what you mean by most popular O/S for Vmware

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Commented:
I thougt VMware is installed on top of windows and then you build virtual machines on one physical server with whatever O/S is needed.

If you run oracle on VmWare ESXI with linux O/S. is it easy to copy to native O/S server in case issue arise. It does not sound easy but i want to confirm.
Paul SolovyovskySenior IT Advisor
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Commented:
That is incorrect.  ESXi is installed bare metal and there is specified hardware that will run it, you can check by reviewing the HCL on the vmware website.  You can also install it on a usb drive or SD card on the server which is fully supported.

If you want to make a copy of a VM that runs on ESXi it is fairly easy to do.  You would browse to the datastore, ensure VM is shutdown and copy the VM folder with the vm files there.
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Commented:
As mentioned earlier there are different VMware Products. Some of them are based on ESXi which is a Level 1 Hypervisor. It as has already been mentioned runs on top of it's own small RedHat version and so uses very little resources itself. VM's running inside ESXi will run almost at at the same level of efficiency as if they were running directly on the hardware.

Other VMware Products like VMware Player or Workstation are installed inside Windows or Linux (there are both versions available), or VMware Fusion is installed inside the MAC OS. These are Level 2 Hypervisors. Any VM running inside those will be much slower than when compared to those running on ESXi. You have to take into account that the Host OS needs it's resources, and the Guest OS needs it's own resources too. Another similar product is Oracle's VirtualBOX, which like VMware Player is free.

One thing you also have to take into account when using ESXi. That is an OS that is meant for running on a Server in a Server room. You normally don't work directly on that server. There is only a limited console display on which you can't do much. In order to work with the VM's on this server you have to connect to it via the LAN from other PC's, and the VM's you install on it you'll also have to use remotely.

With Level 2 Hypervisors you can use the VM's directly on the same PC where the Hypervisor is running on.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
If you are referring to VMware Workstation and VMware Server, there are versions for Windows and Linux.

Author

Commented:
well i checked today and they are going to run oracle 11g on VM ESXi.
they said they can build any VM machine (windows, red hat, solaris) on the ESXI and would would be similar to running on a unix server.

Is this true and would you recommend installing solaris VM for oracle database 11g?

They said there is a new technology coming out that enables them to copy the VM to bare bone machine in case oracle support is needed to run on native O/S. But the above comment seems to say it is pretty easy to do that now using datastore.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
Yes, VMware ESXi is a Type 1 Hypervisor, which supports many Operating Systems.

Performance under a Hypervisor can be different to an actual Sun Solaris Sparc Server running Oracle. At present I also believe Oracle is not supported in a VM.

software by a Company called Platespin has been able to complete A virtual to physical for many years, its not new. But this is additional commercial software available separately.

Author

Commented:
what O/S for the VM machine you would recommend for oracle? solaris, red hat or windows.
would you pick one based on what you worked for mostly with. Right now we use oracle over IBM AIX server.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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You should pick an OS that your Suuport teams and dbas are most familiar.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Support Teams and Database Administrator are familiar.

Author

Commented:
i wll be the DBA. i have mostly done development for last few years on unix paltforms. How would you make adecision based on this. Some say oracle runs better and much more stable on unix than windows. so i am srot of between slaris and redhat VM machine
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
I would always agree with Oracle on Unix!

Author

Commented:
yes, but would i select solaris or red hat over vm esxi.

I wonder which would be more stable over VM Esxi. Someone mentioned that VM Esxi is based  on red hat linux O/S mostly.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
ESXi is not based on Red Hat Linux anymore, that was ESX, where the service console was Red Hat Linux based, There is no service console in ESXi.

Only Sun Solaris 10 (32 & 64 bit) is supported on ESXi 4.x.
Oracle Solaris 10 (32 & 64 bit) , 11 is supported on ESXi 5.0.

I would install on Oracle Solaris 10 or later.

Author

Commented:
never heard of oracle solaris. is this the old sun solaris and they changed the name after they bought sun?

so you would vote for Solaris over Red Hat Enterprise linux.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Yes, now that Oracle own Sun, it's called Oracle Solaris 11.

Yes, Oracle Solaris and Oracle 11g.

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