Enable Configure or Disable Hyperthreading on Vsphere ESXi Hosts

Hyper-threading is a neat feature in the latest INTEL NEHALEM series. It allows each physical core to run 2 threads simultaneously which means 4 physical cores and 8 logical cores. Having double the logical processors does not boost the performance by 100% but it just makes processors more efficient and in some cases help to achieve a gain of 20%. But it still plays a great role when deployed in Vsphere Virtual Infrastructure.

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Understanding concepts of Vmware Virtual vNetworking – VCP 5 NOTES

Before designing a virtual network for the virtual machines it is very important to know the features, terms and options available in the vmware vsphere for the virtual network design. The prime components of a network design are always the switches. So I will start with the switches. The virtual switches present inside vmware vsphere have similar features to physical switches but at the same time there are some differences as well.
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Understanding concepts of VSphere High Availability (HA) – My VCP 5 Notes

VMware VSphere High Availability (HA) is a super cool feature. It is different from the Vmotion. When doing vmotion a running guest is migrated from one ESX host to another ESX host. The condition that should be satisfied for the vmotion is that both hosts should be powered on. In case one ESXi Host fails and we have a production virtual machine running on that host, we wont be able to migrate that to another failover host. This is where the VMWare VSphere High Availability (HA) comes into play. The VSphere High Availability (HA) is a business continuity feature if a host fails and is configured for VSphere High Availability (HA) then the selected machines are started automatically on the another ESXi host.

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