vsphere advanced functionality requires vcenter server and shared storage support can be achieved. Advanced features vsphere have vmotion, storage vmotion, vsphere HA, vsphere DRS, storage DRS, vsphere fault tolerance and so on.
1、vmotion
vmotion is a useful for running virtual machines from one host to another esxi esxi host and does not service interruption.
2、storage vmotion
This function is used to run in a virtual machine disk files and configuration data from one data store to another store, without interrupting service.
3、vsphere HA
One kind enables a cluster with high availablity function. If a host fails, all virtual machines running on that host are immediately restarted on other hosts in the same cluster.
When the function is enabled vsphere HA cluster, to be noted that the number of hosts can hope to recover.
vmware HA provides a base level contains a virtual machine by restarting the virtual machine host fails. vmware fault tolerance to provide higher levels of availability, allows users to protect any virtual machine from a host failure data, and other things.
Fault-tolerant technology using vmware vlockstep esxi on the host platform to provide continuous availability. By ensuring that the state of the main and auxiliary VM virtual machine at any point in the instruction execution of the virtual machine are the same to complete the process. vlockstep to complete the process by the main and auxiliary VM virtual machine executing the same sequence of x86 instructions. The Primary VM captures all the events and replayed on the secondary virtual machine.
If the primary virtual machine allows a host fails, transparent failover occurs.
4、vsphere DRS
vsphere DRS is a help to improve resource allocation and function across all hosts and resource pools consumption state functions. Resource usage for all hosts and virtual machines within the phone vsphere DRS cluster and gives recommendations placement and load balancing capabilities during the initial start the virtual machine (ie, DRS will automatically migrate -vmotion attempt by executing a virtual machine or virtual machine provided migration recommendations to improve the cluster resource utilization).
5, Storage DRS
DRS stores a plurality of data storage may be used as a single data storage function of managing the cluster. Virtual disks can be assigned to the data storage cluster, Storage DRS will find its corresponding data storage. The load balancer is responsible for initial placement and follow-up work based on migration is responsible for measuring. Balance storage space and I / O balance may be insufficient to reduce the risk of virtual machine performance space and I / O bottlenecks minimize risk.
6、vsphere fault tolerance
vsphere FT by creating and maintaining the same host virtual machine, and readily replace the primary auxiliary virtual machine VM failover occurs, to ensure continuous availability of the virtual machine.
Currently only downside vmware fault tolerance is in fault-tolerant virtual machines can only be assigned a CPU, it does not support multi-CPU.
7, New Cluster
