Chapter 05: introduction to virtualization features

Copyright © Huawei Technologies Co., Ltd. 2019
Introduction to Virtualization Features

Foreword
 Having attended previous courses about cloud computing, you may already have
a good understanding of virtual machines (VMs) and the resources they use. This
chapter focuses on when and where we would need to use VMs and what
virtualization features VMs provide.

Objectives
 Upon completion of this course, you will:
 Understand virtualization features.
 Understand where and when virtualization features may be used.

What Are the Benefits of Virtualization?
What do I get
by using
virtualization?
?

Contents
1. Introduction to Cluster Features
2. Introduction to Virtualization Features
3. Introduction to the Features of Huawei’s Virtualization Product

Virtual Cluster Features (1)
Cluster
VM VM VM
VM VM VM VM VM

Cluster
VM VM VM
VM VM VM VM
VM

Cluster
Virtual Resource Pools
VM
VM
VM
VM
VM

Hypervisor
4 GB
VM 1
2 GB
VM 2
2 GB
VM 3
2 GB
VM 1
2 GB
VM 2
2 GB
VM 3
2 GB
20%
70%
70%
VM 3
2 GB
VM 3
2 GB
VM 3
2 GB
Memory
Sharing
Memory
Swapping
Memory
Ballooning

Virtualization (VM) Features (1)
VM1
VM 2
VMn
VM 1
VM 2
VM 3
VM 4

VM 75%
VM 25% VM

Read
Write
Original Snapshot 1 Snapshot 2
Read
Write
Read
Write
Create

Read
Write
Create
Read
Write
DELETE
Delete

Read
Write
Create
Original
Snapshot 2
Read
Write
Delete
Read
Write
Read
Write
Restore

NUMA
NUMA-Node0
NUMA-Node1
Interconnect
Local Access
Remote Access
VM
VM
VM
VM

Prerequisites for Enabling Advanced
Features - Tools
I need VM hardware information
I need VM status information
Kernel-mode hardware drivers
• Snapshot
• Live migration
• Online VM flavor change
• NIC QoS
...
User-mode vm-agent process
• Obtain VM MAC address
• Obtain VM status
• Soft shut down a VM
• Restart a VM
...

Contents
1. Introduction to Cluster Features
2. Introduction to Virtualization Features
3. Introduction to the Features of Huawei’s Virtualization Product
 Cluster Features
 VM Features

Cluster Features
Cluster
• IMC
Others
• Memory
overcommitment
• NUMA
Basic Features
• CNA host failure
• Data store failure
• Blue screen of death
(BSOD) on a Windows VM
HA
• Cluster resource scheduling
• Power management
• DRS rules
Load Balancing

HA
Restore on
original host
VM HA
Do nothing
VM HA
Do nothing
Restart VM
VM HA

07:00
Power Management
Cluster
VM VM VM
VM VM VM VM
VM
07:00 23:00
VM VM VM VM

DRS Rules
VM 1 VM 2
VM 1 VM 2 VM 1 VM 2
VM 1 VM 2
Keep VMs
together
Keep VMs
apart
VM 1 VM 2
VMs to hosts
Host Group
VM Group

IMC
 On FusionCompute, enabling incompatible migration cluster (IMC) mode for a cluster allows VMs
to migrate between hosts that are using CPUs with different performance baselines within this
cluster.
 Currently, IMC mode only allows VM live migration between hosts using Intel CPUs.
 IMC mode allows the hosts in a cluster to present the same CPU function set to VMs running on
them, despite the fact that these hosts may be using CPUs with different performance baselines.
 For the IMC mode to work for a cluster that already contains hosts and VMs, ensure that the
following conditions are met:
 The CPU generations of the hosts in the cluster are the same as or later than the target IMC mode.
 The CPU generations of the running or hibernating VMs in the cluster are the same as or earlier than the
target IMC mode. If any VM in the cluster does not meet this requirement, stop this VM or migrate it to
another cluster.

VM Features
Virtual
Machines
• VM deployment
using a template
• VM cloning
• CPU QoS
• Memory QoS
• Disk scaling
• Adding or deleting NICs
• VNC login
Console
Fast Deployment Others
Resource Management
• Snapshot
• Bundling or attaching USB, PCI, or
GPU devices, or CD-ROM drive

CPU and Memory QoS
Reserved Reserved
Quota
Limit
Quota
Limit
Memory
CPU

Quiz
1. Which of the following is not a snapshot management option?
A. Create a snapshot
B. Modify a snapshot
C. Restore a VM using one of its snapshots
D. Replicate a snapshot
2. Templates can be used to quickly deploy VMs. At present, templates can be created
only by converting or cloning VMs.
A. TRUE
B. FALSE

Summary
At this point you should:
 Understand virtualization features.
 Understand where and when virtualization features may be used.

Recommendations
 Huawei e-Learning website
 http://support.huawei.com/learning/Index!toTrainIndex
 Huawei Support case library
 http://support.huawei.com/enterprise/servicecenter?lang=en
 HCIA-Cloud Computing v4.0 online forum
 https://forum.huawei.com/enterprise/en/Huawei-Official-Communication-Channel-
HCNA-Cloud-Certification-Course/thread/456287-911

Chapter 05: introduction to virtualization features

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Chapter 05: introduction to virtualization features