The following notes will assist you to prepare for this objective:
- HA has come a long way, don’t rely on legacy knowledge of HA to meet objective
- Learn the newer features, pre-reqs and limitations of:
- Proactive HA
- Orchestrated Restart
- Fault Tolerance (FT) vSMP
- HA can’t work around everything
- For example datastore connectivity loss or unable to satisfy reservation
- Ensure you can explain the basic modes of DRS
- Disable, Manual, Partial, Full Automated, per-VM
- DRS has come a long way
- Predictive DRS
- Limitations of vMotion have been overcome
- What are the vMotion pre-reqs?
- CPU compatibility
- Network configuration
- Compatible virtual hardware
- What virtual hardware options can and cannot be migrated with DRS?
- SDRS often gets overlooked
- Remember it has 2 dimensions to optimization
- Space utilization & I/O latency
- What are you being asked in the question?
Reference:
vSphere Availability Guide pdf
vSphere Resource Guide pdf
Brian Graf Blog – https://www.brianjgraf.com/2016/10/17/vsphere-6-5-vsphere-ha-whats-new-part-3-orchestrated-restart/