Cloud VPS in Vietnam is created by dividing physical server into multiple different servers that have full function like a dedicated server.
Virtual (or Virtual Private Server – VPS) server is based on virtualization technology. Depending on each of virtualization technology that virtual servers have different resource sharing.
When you make a decision to use VPS instead of shared hosting VPS, you will look for information and become confused by many different types of VPS: Windows VPS, Linux VPS, OpenVZ VPS, Xen VPS, VMWareVPS… You realize that you do not know each of them, what is the advantage and disadvantage.
The classified information above such as OpenVZ, Xen or VMWare is essential virtualization technologies (Virtual Platform) that is used to divide one physical server into several Vietnam VPS server. And each of the virtualization technology has its advantages and disadvantages as follows:
- XEN VPS
XEN virtualization technology allows you to run multiple virtual servers on one physical VPS server.
XEN virtualization technology allows each virtual server to run on their own kernel so that users can install both Linux and Windows operating system. Each VPS has its own file system and operates as an independent physical server.
Resources of XEN VPS server is also independent that means each server has its own RAM, CPU and Disk. It ensures that your VPS server will be provided with sufficient resources like commitment of service provider.
XEN virtualization technology requires sufficient physical resources for each VPS so that service providers must equipped physical resources on the real server. It is resulted that XEN VPS server are often more expensive than other technology.
- OpenVZ VPS
OpenVZ (Open Virtuozzo) is a virtualization technology system based on the Linux kernel. OpenVZ allows a physical server to run separately operating systems (called containers), virtual private servers (VPSs) or virtual environments (VEs).
OpenVZ is not really virtualized so it can run only Linux operating system. That means all virtual servers can also run Linux with the same technology and Kernel version. However, there is none of separate kernel so it operates so fast and efficiently.
The OpenVZ memory allocation is not separated. That means one memory can be used by several VPS. It also uses a shared file system, so each VPS is really a changed root folder. The new version of OpenVZ allows each VPS to have its own file system. With the “virtual” folders like a VPS, we can copy a VPS in Vietnam by copying the folder and transferring to the appropriate configuration.
- VMWare VPS
VMWare virtualization technology is developed by the company VMWare. It also supports hardware virtualization. This technology is commonly chosen by large companies such as banks not used for business VPS.
- KVM (Kernel-based Virtual Machine)
KVM virtualization is a new technology that allows virtualizing on the hardware. Like XEN, KVM is provided separate resources. This avoids sharing with other server on the same node. Root servers are installed Linux, but KVM supports virtual server that can run both Linux, Windows. It also supports both x86 and x86-64 system.
There are no official statistics of the advantages of KVM and XEN. However, XEN was developed about 10 years ago so it can be complete. Besides that KVM is new technology so it can be updated and avoid unnecessary mistakes. Therefore, choosing XEN or KVM VPS depends on your preferences as well as the prestige of hosting providers.