Enables Cloud Hosting Companies to Enforce Storage SLAs with NFS

The host storage resources is slower and more complex, and can severely disabling virtual machine (VM) performance during the critical business processes. In a VMware environment, provides storage I / O Control (SIOC) control a much-needed storage I / O and is used to ensure that the performance of the virtual critical not affected vehicle manufacturers of other machines, if the competing demands for the I / O 5 new vSphere Storage I / O control now supports NFS and Network Storage (NAS) over claims for common data storage is based. This allows companies to scramble for the hosting quality of service set priorities per virtual machine memory for improved access to storage resources a high priority. It also enables the implementation of service level agreements cover (SLA) with the NSF. Take some more look.Storage I / O control allows administrators to have control, the scramble for the amount of virtual machines hosting queues to access I / O in a common data store. This ensures that virtual machines with critical applications a higher priority to the queue I / O than other virtual machines that can access the same data store together. And the new storage API and awareness by storage at 5 vSphere eliminates the need to maintain tables detail the massive storage capacity for each LUN that are necessary to ensure good to SLA for virtual machines. While vSphere 4.1 supports SIOC-based VMFS datastore using iSCSI and Fibre Channel SAN, vSphere supports SIOC 5 years to data warehouses has been extended on the basis of NFS.

Storage I / O control will now control virtual machines dynamically to multiple resources at the residence of the I / O on the basis of disk resources for virtual machines. It helps isolate the performance of latency sensitive applications, employing less than 8 KB (<) random I / O requests. This feature has been shown to increase the yield by almost 20%. At the same time it has been dispersed without the use of resources for virtual machines that need it, in proportion to the contributions of the virtual machine disk, use that as a fair sharing of storage resources without loss. And to provide reliable power for critical workloads, with limited power fluctuations in a small area during periods of congestion / O This increases performance by 11% compared with an unmanaged scenario without memory I / O control.

Storage I / O controller provides a mechanism to dynamically control access to resources for virtual machines Fibre Channel I / O (FC), iSCSI or NFS to manage on a cluster. It offers the same performance of NFS datastores that FC or iSCSI support, and data warehouses. Tests have shown that with the right balance between workload, storage I / O control, the performance of mission-critical applications to improve up to 10%, with improved latency for each operation, I / O, up to 33%.

Recent tests in laboratory performance of VMware Performance Engineering has examined various aspects of the SIOC, and found that the administration of the improved access from the tails of I / O uses a 10% improvement in response time caused the workload for testing. The ability to isolate from the SIOC application performance with lower demand has improved performance. The tests showed that the databases SIOC with I / O 8K improvement of working through the sharing of data storage with a workload that large applications using basic research contributed to I / O SIOC monitors the use of the queue virtual machine I / O in the host and dynamically distribute the queue slots not used on virtual machines that need it. Tests, these results confirmed a few more resources consistent and reliable cloud hosting.

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