Is there any impact if existing databases shift in to Vertual Servers?

Hi,
I have nearly 30 databases running in 3 servers with Red Hat Linux, Windows 2003 and Suse Linux, Our Management wants to set up vertual servers and asking confirmation for Oracle database operation.
Appriciate if some one can advice on this proposal regarding oracle databse operation in vertual Servers.
What is a virtual server environment?
It is a method of partitioning one physical server into multiple “virtual” servers, giving each the appearance and capability of running on its own dedicated machine. Each virtual server functions as a fully-fledged server and can be independently rebooted.
What are some of the main advantages of a virtual server environment?
• Individual systems do not need dedicated physical hardware.
• Decrease in the required number of physical devices.
• Significant energy efficiency through reduced cooling and electricity costs.
• Better redundancy in the event of an outage.
Regards
Karunika

Salman Qureshi wrote:
Hi,
I have nearly 30 databases running in 3 servers with Red Hat Linux, Windows 2003 and Suse Linux, Our Management wants to set up vertual servers and asking confirmation for Oracle database >operation.
Appriciate if some one can advice on this proposal regarding oracle databse operation in vertual Servers.First of all, 30 databases on 3 servers, quite bad idea i think. How many of them are critical production systems? If your company did not invest in hardware and software, will they be ready to buy license of virtual machines (you need separate OS licenses for OS on virtual machines).
Now, not a bad idea for going virtual as you already see the advantages, but, you alreay have 3 servers, you already have all the benefits which you can get by going virtual.
Believe me, i don't see any benefit for you to go virtual. having 10 databases on a single server is better than having 10 virtual machines on a server and configuring one database on each virtual machine.
Exactly how is having 10 databases on a single physical server better than 10 virtual machines with one database each? Believe me, I don't think that statement is so self-evident. A lot of it depends on the nature of the databases that are sharing a physical server, their relationship to one another, their individual support and upgrade needs, etc., etc.
Your question is very complex as no one knows your needs and how much more hardware you are going to buy, how many databases are critical production. You need to research on the internet whether it is feasible for you? Check bellow document about "when should you use virtualization "
http://articles.techrepublic.com.com/5100-10878_11-6074941.html
Salman

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