What is a shared nothing migration?

What is a shared nothing migration?

Shared nothing live migration is a feature of Microsoft Hyper-V 3.0 and VMware vSphere 5.1 that allows a virtual machine (VM) to be moved from one physical server with direct-attached storage to another physical server with direct-attached storage.

What is the difference between live migration and quick migration?

The only difference between ‘Quick Storage Migration’ and ‘Live Migration’ is that the first one moves virtual machine storage from one location to another location and later one is capable of moving virtual machine along with the storage from one node to another node in the cluster.

What are the key management characteristics of a Hyper-V shared nothing live migration?

Hyper-V 2012 Shared Nothing and Live Migration

• Need 2 or more servers running Hyper-V. must support hardware virtualization. must have like processor family (like Intel)
• The VM’s which will be part of the live migration cannot use physical disks. They must use either: Virtual hard disks.

Is shared storage required for live migration?

Requirements for live migration using shared storage: All files that comprise a virtual machine (for example, virtual hard disks, snapshots, and configuration) are stored on an SMB share. Permissions on the SMB share have been configured to grant access to the computer accounts of all servers running Hyper-V.

How does VM live migration work?

In live migration, the static part (not changing or having any active write operation) of the VM is transferred first while VM keeps running on the source server. Then VM is suspended and the remaining part is transferred. Live VM migration reduces the down time but engages more resources for a longer time.

How does vMotion work without shared storage?

vMotion does not require environments with shared storage. This is useful for performing cross-cluster migrations, when the target cluster machines might not have access to the source cluster’s storage. Processes that are working on the virtual machine continue to run during the migration with vMotion.

Can I do vMotion between two different clusters?

Yes, you can migrate VM’s between vSphere clusters (even between different versions) as long as below conditions are met: vSphere clusters must be managed by single vCenter server. vSphere clusters must be within single DataCenter object in vCenter server.

Under what conditions would live migration not work?

VM failed to live migrate because a virtual switch used by the VM doesn’t exist on the destination node “Host2”. The virtual switch must have the same name on all nodes. If a virtual machine is connected to a virtual switch that doesn’t exist on the destination node, then live migration fails at < 10%.

What types of instances can be live migrated?

Live migration keeps your instances running during: Regular infrastructure maintenance and upgrades. Network and power grid maintenance in the data centers. Failed hardware such as memory, CPU, network interface cards, disks, power, and so on.

What is a shared nothing live migration?

– Definition from WhatIs.com Shared nothing live migration is a feature of Microsoft Hyper-V 3.0 and VMware vSphere 5.1 that allows a virtual machine ( VM) to be moved from one physical server with direct-attached storage to another physical server with direct-attached storage.

Is it possible to migrate from Hyper-V to shared nothing?

Just the fact that they exist with the same names as on the old Hyper-V hosts is sufficient to make shared nothing migration possible. Actually, this is a great time point to remind ourselves that we don’t even spare NICs.

What is a live migration?

Before the introduction of this feature, live migration was limited to virtual machines hosted on a shared storage system because both the original and target hosts required access to the same storage logical unit number ( LUN ).

How to migrate virtual machines from one network to another?

The first step is to make sure shared nothing migration works. We can achieve this in several ways. We can disconnect the virtual machine network adapters from their virtual switch. While this allows you to migrate the virtual machines, this leads to connectivity loss. This is not acceptable.