Hello Readers!
We will be learning about how VMware provides a stable & reliable environment by making itself available and migrate machines to prevent possible downtime.
VMware Availability:
Availability or High Availability in VMware deals with ESXi host failure and what happens to the VMs running on those hosts.
Availability is to make sure that downtime is very less in the event of failure and machines should be always up.
Above is the agreement done with clients in terms of % availability.
Migration:
Migration is the technique of moving a virtual machine from on host to another host or form one datastore to another datastore.
Types of migration:
--> Cold Migration
--> Suspended Migration
--> vMotion --> VM vMotion / Storage vMotion
Cold Migration:
Movement of a virtual machine to another host in powered off state.
Suspended Migration:
Migrating/movement of a virtual machine that is in suspended (pause state of a vm)
vMotion:
Migrating a virtual machine that is in powered on state. This is very useful as this does not cause any downtime for the target VM.
In VM vMotion, machine is migrated from one ESXi host to another in powered on state, whereas in storage vMotion, machine is migrated from one datastore to another datastore in powered on state.
Thats all for this blog now!
Happy Reading! Happy Learning!
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