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Dick Stokes

VMWare Cloud Computing guidelines from the professionals - 0 views

VMWare Computing esxi firewall cloud hosting security virtualization

started by Dick Stokes on 31 Jan 12
  • Dick Stokes
     
    2011 proved to be a watershed year with regard to business migration to cloud-based solutions, and with the much anticipated release of VMWare Cloud Computing vSphere 5, hosts and providers worried about cloud security welcome the addition of the ESXi stateless firewall. " vSphere is the most trusted cloud operating platform on the market, with 100% of Fortune 100, 98% of Fortune 500, and 96% of Fortune 1000 companies with the platform to power their cloud computing solutions. The new version, vSphere 4. 1, brings significant gains and impressive functional improvements on the virtual table. Most critics consentrate on overall improvements in scalability, effectiveness, customization, and control.

    Increased Scalability

    vCenter's 64-bit OS requirement means significant gains in ability. vSphere 4. 1 requires that vCenter run on a system with a 64-bit main system. As a result, vCenter can support a more substantial number of physical hosts and a better number of Virtual Machines per cluster. VMware claims that each vCenter server can help 1, 000 physical hosts and up to 15, 000 authorized Virtual Machines, with a limit of 10, 000 VMs online concurrently and up to 3, 000 VMs per cluster. These figures represent even though a three-fold increase over previous capacity.

    Improved Performance

    Sophisticated memory compression boosts Virtual Machine density. Significant acquires in memory compression enable vSphere 4. 1 to find the most out of computer. As technology has advanced and a typical server has included more CPU and quicker cores, memory has become a performance bottleneck. vSphere several. 1 includes functionality that compresses over-committed memory and stores it in physical RAM rather then swapping it to computer. This method is a great order of magnitude faster and enables a higher VM density per virtual host, meaning that each host can support as much 25% more VMs while using same amount of memory as a system running the old version.

    vMotion enhancements increase VM migrations. In vSphere 4. 1, improvements to vMotion translate to individual virtual machine migrations which can be 8 times faster in comparison to the previous release. In add-on, the new vMotion sustains simultaneous migrations, a crucial capability when trying to perform non-disruptive scheduled appliance maintenance. Depending on that vMotion network adapter, concerning 4 and 8 simultaneous migrations are generally possible.

    Storage and network I/O control features aid workload balancing. Storage and network I/O equipment foster performance improvement by giving granular control over precisely how applications access shared storage space and network resources. With vSphere 4. 1, new controls allow intelligent workload balancing that can be used to prioritize traffic types, ensuring that high-priority virtual machines access the proper I/O resources. This stops typical issues during cycles of congestion.

    Resolve socket restrictions. Multi-core virtual CPU help allows administrators to adjust may be cores for each virtual CPU in the VM, which facilitates operating systems with socket restrictions to make use of more host CPU cores together with increase performance.

    Choices and Control

    Better Active Directory authentication tightens protection. AD authentication extends to the individual hypervisor level to provide tighter security and additional capabilities like policy enforcement and audit logging. Cloud computing is making a mark on the IT landscape, but it has yet to reach the amount of universal acceptance that virtualization has achieved.

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