Nested Hypervisor on vSphere
VM Hardware version 9 or Higher VM Advanced settings add: vhv.enable = “true” hypervisor.cpuid.v0 = “FALSE” (Hyper-V) And in vSphere Webclient enable “Expose hardware assisted virtualization to the guest OS” under CPU.
vSphere
VSA change MAC vSphere 5.1
edit the vmx file /vmfs/volumes/50bf4d82-31b73571-5543-001e4f378eac/MAS # vi MAS.vmx ensure you are using generated MACs: ethernet0.addressType = “generated” ethernet1.addressType = “generated” edit these 3 lines to reflect the MAC you want. this assumes you want to use one of the “VMWARE automagic (00:0c:29)” ones, notice the last 6 chars of the […]
vSphere 5.1 static MAC
Failed to start VM After upgrading an ESX cluster from vSphere 5.0 to vSphere 5.1 a VM failed to reboot.. Instead, an error message was issued: Failed to start the virtual machine. Module DevicePowerOn power on failed. Could not set up “macAddress” for ethernet0. Invalid MAC address specified. 00:0C:29:A0:B0:1D is […]
Oversubscription Pros & Cons + how far it should go before it becomes dangerous
Best Practices for Oversubscription of CPU, Memory and Storage in vSphere Virtual Environments Pros and cons of oversubscription and how far it should be taken before it becomes dangerous Scott D. Lowe http://www.vkernel.com/files/docs/white-papers/vsphere-oversubscription-best-practices.pdf vSphere Oversubscription Best Practices