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Virtualization makes simple management and reduce costs. Article will guide you how to select the server and software for virtualization.By using a physical server to run multiple virtual servers, you can reduce many operating costs as well as investment costs.

Currently, almost impossible to buy a server that is not the kind most people, but many small businesses (under 100 employees) the server does not need to ask too much so. However, if you comply with this requirement, it is likely that small businesses will be equipped with physical servers are expensive, less effective just consuming energy, radiate more heat.

That's why most people buy a server - with 4, 6 or even 12 cores on a processor - a server to storage virtualization, suitable for all sizes of business activities.

Select the host:
Decision success in server virtualization environments smaller scale starts with the physical host (host). Although it will be responsible for hosting dozens of virtual servers, but the resource requirements on the processor (CPU) less than you think.

Depending on the virtualization software (hypervisor instance), you will be able to run on a virtualized server CPU 4 or 6 people. The reason is that most of virtualized servers operated almost in maintaining the status (idle) in the majority of the time. When server virtualization started running, their resources tend to split up the CPU, RAM, hard disk and network access in / out, in which only a few virtual servers require significant CPU resources. By taking advantage of this, you can close coordination of multiple servers on a single physical host only.

However, for the database server, download data much irrelevant installed on server virtualization. All depending on the hardware resources on the host server, virtualization software features, and also depending on the requirements of virtualized servers. The establishment and inspection requirements before implementation is not too difficult.

Choose hardware, a principle to remember is to select and multi-core CPU clocked at large for the host, if you select the speed between CPU 4 CPU 2.93 GHz and 6 speed 2 or 12 people, 4GHz, you should choose the CPU 6 or 12. Because the ability to share virtual server load faster on multi-core CPU, the performance more uniform across all virtual servers.

RAM and hard drive:
Server and storage virtualization can always use more system memory (RAM), so equip as much RAM as possible, and select the type of RAM as quickly as possible. On the other hand, the allocation of RAM is also demanding more control over the CPU. The more RAM, the more you can have multiple virtual servers.
In smaller environments, you may not need storage or network storage device for storing photos online server virtualization, because the host will be responsible for this task. In that case, as much as possible the hard disk. General requirements, SATA drives running RAID 5 or RAID 6 is fully met, although SAS hard drives (Serial Attached SCSI) provides performance more effectively.


Virtualization Software:
You have many options for free software. Free VMware Server runs on Windows or Linux. Virtualization software to the operating system to provide the required performance and they are easy to install and use. If you want completely free, install and run Linux on servers to VMware Server on Linux. If not, install the Windows Server 2003 or 2008 and VMware Server running on Windows.

VMware VMware ESXi is the free version. This version is built on the basis of VMware paid, stable, VMware ESXi, but there are some hardware compatibility issues, hardware compatibility check in find.pcworld.com/70448.

Microsoft's Hyper-V is probably good for networks running Windows. Technically, Hyper-V is not free, as it is required to purchase Windows Server 2008 R2, Hyper-V but the interface is simple and well integrated into the OS. If the virtual server running on host Windows Server 2008, you might think about buying the copyright.

Buy Windows Server 2008 R2 allows you to run 4 virtual servers Windows Server 2008, with only 1 license.

You can also choose other options, such as Citrix XenServer. This free version features may not be equal to the free version of VMware, such as managing multiple servers. XenServer does not follow the trend as the other software, but it can be downloaded and installed free of charge, and does not need to rely on the operating system or operating system license.

Network Card:
In many cases, physical servers use only 1 or 2 network cards to support the entire virtualization environments, but if the network switches (switch) allows you to include links to increase bandwidth for virtual servers is very good. The included 2 or more gigabit network card, to help you create a larger virtual network card, support more bandwidth to users and to other physical servers on the network. Many midrange switches support this feature.
If the network switches lack features include connection, you can take a card for a server network is the most downloaded. Gigabit network card is pretty cheap now, so be equipped with at least 4 gigabit network card for physical servers.
Power
You often see a number of servers with only a single power supply, but if you run multiple virtual servers on a host, you should invest more resources to run the standby mode. All server virtualization you are totally dependent on the power supply of the physical server. The equipment and backup power quite worth it if you abundance.

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