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Real servers: nodes that make up an LVS cluster which are used to provide services on the behalf of the cluster; Client computers: computers requesting services from the virtual server; VIP (Virtual IP address): the IP address used by the director to provide services to client computers
Virtual servers do not have to be backed by opaque disk images, but can share a common file system and common sets of files (through copy-on-write hard links). This makes it easier to back up a system and to pool disk space amongst virtual servers. Processes within the virtual server run as regular processes on the host system.
A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service. [1] The term "virtual dedicated server" (VDS) has a similar meaning.A virtual private server runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS.
Virtualization: Server consolidation, service continuity, dev/test, cloud computing, business critical applications, Infrastructure as a Service IaaS: Up to near native [citation needed] Yes VMware ESX Server 4.0 (vSphere) Yes, add-on, up to 8 way Yes Yes Virtualization: Server consolidation, service continuity, dev/test, cloud computing
The primary driver was the potential for server consolidation: virtualization allowed a single server to cost-efficiently consolidate compute power on multiple underutilized dedicated servers. The most visible hallmark of a return to the roots of computing is cloud computing , which is a synonym for data center based computing (or mainframe ...
The flexibility of virtual server environment (VSE) has given way to its use more frequently in newer deployments. [citation needed] IBM provides virtualization partition technology known as logical partitioning (LPAR) on System/390, zSeries, pSeries and IBM AS/400 systems. For IBM's Power Systems, the POWER Hypervisor (PHYP) is a native (bare ...
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