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VMware vSphere

vSphere is the world’s most wide-spread virtualisation platform for establishing private and public cloud infrastructures. By consolidating, the data centre infrastructure on hardware level can be reduced to a minimum. Thus, hardware utilisation reaches easily and without performance loss 80% compared to a solution without virtualisation. This leads to a significant reduction in investment and operating costs due to lower space, energy, cooling, hardware and service costs.

At system level, this platform provides high-availability mechanisms for business-critical applications, meeting top levels of Service Level Agreement requirements. Little effort is needed to scale the system platform to meet new operational requirements in the most efficient way.

Operating systems, being no longer supported by the new hardware platforms, can be easily converted and run on the virtualised platform. Pprerequisite for this is that the system to be migrated is supported on the hypervisor (please consult the compatibility list).


The most essential vSphere Components

  • ESXi is the VMware hypervisor, forming the virtualisation layer for sharing hardware resources.
  • VMware Virtual Machine File System (VMFS) provides access to disk resources on local and shared storage systems (such as FC, iSCSI, and more).
  • In the event of a software problem or hardware failure of a physical host, VMware vSphere High Availability (HA) ensures the restart of the virtual instances on a different host within a very short time.
  • VMware vSphere vMotion enables you to move running virtual machines between physical hosts while they are in operation and this without any interruptions. This allows maintenance to be performed on the physical servers without interrupting operations.
  • VMware Storage vMotion allows virtual disks of one VM to be migrated to another VMFS store during operation. In this way, migrations to another storage system are possible without any interruptions perceptible to the user.
  • VMware vSphere Fault Tolerance (FT) provides uninterruptible VM availability through replication (online copy of a VM) in case of a hardware failure.
  • VMware vSphere Data Protection enables cost-effective backup of VMs, based on Avamar technology. This is an agentless backup including data deduplication in the backup pool.
  • VMware vSphere Data Protection Advanced Version, not free of charge, provides additional features for online integration, single item recovery and greater backup capacity.
  • VMware vSphere Distributed Resource Scheduler (DRS) ensures distribution of virtual machines on the physical hosts in an ESX cluster using policy-based automation.
  • VMware vSphere Storage Distributed Resource Scheduler (Storage DRS) decides, based on storage characteristics regarding performance and on virtual machine requirements, on which storage device virtual machine data are to be stored.
  • VMware vSphere Distributed Switches simplify Network Management due to a senior network instance. These switches are required for using the dynamic Link Aggregation Control Protocol (LACP).

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