VMware and Windows Interview Questions: Part 9
- How can I change the EVC mode of an existing cluster?
- You need to shutdown all running VMs in that cluster to change the EVC mode
- What if reconnecting the ESXi host back to an EVC cluster fails?
- Make a note of the VM folders
- Remove the ESXi host from the inventory
- Add the ESXi host directly to the vCenter outside the EVC cluster
- Now move the server to the EVC cluster
- Add the VMs back to the folders
- What is PSC?
- PSC is Platform Service Controller
- This is an extended SSO model which was there in pre 6.0 versions
- It takes care of authentication,licensing,certificates etc..
- What are the two deployment models of PSC?
- Embedded & External
- Embedded if PSC is installed in vCenter box
- External if PSC is installed outside vCenter in separate box
- How can I check if storage is VAAI capable?
- Check datastore and confirm if it supports Hardware Acceleration
- What is vmx~?
- In addition to the normal vmx file, from vSphere 6.0 onwards there is an additional file vmx~
- vmx~ first takes any configuration changes and then writes to the actual vmx file
- This ensures that the actual vmx file do not get corrupted
- What are the various memory states in ESXi ?
- High
- Clear
- Soft
- Hard
- Low
- What is VMCP?
- VMCP is VMware Component Protection
- This new feature in 6.0 ensures that VMs are rebooted in other servers during APD or PDL situations
- What is the name of ballooning driver in ESXi?
- vmmemctl
- What is scratch partition?
- Scratch partition stores the logs and other details of ESXi which helps in troubleshooting
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