What is Metro vMotion?
With Metro vMotion in vSphere 5.0, vMotion can be used to move a running virtual machine when the source and destination ESX hosts have a latency of more than 5ms RTT. The maximum supported round trip time latency between the two hosts is now 10ms. Metro vMotion is only available with vSphere Enterprise Plus license.
What is vMotion and how it works?
VMware® VMotion™ enables the live migration of running virtual machines from one physical server to another with zero downtime, continuous service availability, and complete transaction integrity. VMotion is a key enabling technology for creating the dynamic, automated, and self- optimizing data center.
What is vMotion in vCenter?
VMware Cross vCenter vMotion is a feature introduced in vSphere 6.0 that allows virtual machines (VMs) to switch from one vCenter Server instance to another to change the compute, network, storage and management of the VM concurrently. Several requirements must be in place for the VM to migrate across vCenters.
Does vMotion affect performance?
When a vMotion is done, a VM is stunned by the kernel. While this should not impact VM performance in most cases, there can be situations where it takes longer.
What is long distance vMotion?
Long Distance vMotion is vMotion with latency between hosts greater than 4 milliseconds. This means all the requirements and features that applies to vMotion also applies to Long Distance vMotion.
What is the maximum allowable round trip between ESXi hosts for long distance vMotion?
150 milliseconds
Round-Trip Time for Long-Distance vMotion Migration The maximum supported network round-trip time for vMotion migrations is 150 milliseconds. This round-trip time lets you migrate virtual machines to another geographical location at a longer distance.
How long should a vMotion take?
This entire process takes less than two seconds on a gigabit Ethernet network. Live migration allows you to: Automatically optimize virtual machines within resource pools.
How many types of Vmotions are there?
vMotion Migration Types. There are three main types or modes of vMotion as listed next. I’ve included some of the inherent benefits as well as a clip showcasing each type.
What is the difference between VMware ha and vMotion?
If an accident occurs with any host within the same cluster, then your best solution is VMware HA. vMotion technology promotes migration from one host to another, and it doesn’t matter which OS each host has. VMware HA and vMotion are two interwoven processes; VMware HA is dependent on vMotion.
Can we cancel vMotion?
Storage vMotion (live migration) does not take a snapshot and can be canceled. Storage vmotion copies the data and then uses CBT to copy the changes.
How do I speed up storage on vMotion?
The easiest way to accelerate vMotion is using 10Gbit connection. This method provides not only better bandwidth but also more concurrent vMotions. If a vMotion is configured with a 1GB line speed, it is possible four concurrent vMotion, while with a 10GB link speed – eight concurrent vMotions per host.
What is vMotion and how does it work?
With vMotion, you can change the compute resource on which a virtual machine is running. You also can change both the compute resource and the storage of the virtual machine. When you migrate virtual machines with vMotion and choose to change only the host, the entire state of the virtual machine is moved to the new host.
What are the steps involved in the migration process with vMotion?
Migration with vMotion occurs in three stages: When the migration with vMotion is requested, vCenter Server verifies that the existing virtual machine is in a stable state with its current host. The virtual machine state information (memory, registers, and network connections) is copied to the target host.
How do I move a virtual machine with vMotion?
vMotion Migration Types With vMotion, you can change the compute resource on which a virtual machine is running. You also can change both the compute resource and the storage of the virtual machine. When you migrate virtual machines with vMotion and choose to change only the host, the entire state of the virtual machine is moved to the new host.
What are the different phases of VMware vMotion?
As described in the “Architecture” section, vMotion consists of multiple phases including the guest-trace phase, the precopy phase and the switchover phase. To capture the precise and fine-grained timing details of these different phases, we used a VMware SysInfo (VSI) interface and VMkernel logs.