Module - 11 High Availability and Fault Tolerance

73
© 2012 VMware Inc. All rights reserved High Availability and Fault Tolerance Module 11

description

Module - 11 High Availability and Fault Tolerance

Transcript of Module - 11 High Availability and Fault Tolerance

  • 2012 VMware Inc. All rights reserved

    High Availability and Fault Tolerance

    Module 11

  • 11-2

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Course Introduction

    Introduction to Virtualization

    Creating Virtual Machines

    VMware vCenter Server

    Configuring and Managing Virtual Networks

    Configuring and Managing vSphere Storage

    Virtual Machine Management

    Data Protection

    Access and Authentication Control

    Resource Management and Monitoring

    High Availability and Fault Tolerance

    Host Scalability

    Patch Management

    Installing VMware vSphere Components

    You Are Here

  • 11-3

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Most organizations rely on computer-based services like email,

    databases, and Web-based applications. The failure of any of these

    services can mean lost productivity and revenue.

    Configuring highly available, computer-based services is extremely

    important for an organization to remain competitive in contemporary

    business environments.

    Importance

  • 11-4

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 1: Introduction to vSphere High Availability

    Lesson 2: Configuring vSphere HA

    Lesson 3: vSphere HA Architecture

    Lesson 4: Introduction to Fault Tolerance

    Lesson 5: Introduction to Replication

    Module Lessons

  • 11-5

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 1:

    Introduction to vSphere High Availability

  • 11-6

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    After this lesson, you should be able to do the following:

    Describe the options that you can configure to ensure high availability in a VMware vSphere environment.

    Discuss the response of VMware vSphere High Availability (vSphere HA) when a VMware vSphere ESXi host, a virtual machine, or an application fails.

    Learner Objectives

  • 11-7

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    VMware Offers Protection at Every Level

    Protection against hardware failures Planned maintenance with zero downtime Protection against unplanned downtime and

    disasters

    NIC teaming,

    storage

    multipathing

    VMware vSphere

    vMotion, DRS

    VMware

    vSphere

    Storage

    vMotion

    VMware

    vCenter

    Site

    Recovery

    Manager

    Component Server Storage Data Site

    third-party

    backup solutions,

    VMware Data

    Recovery

    high availability and fault tolerance

  • 11-8

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Make VMware vCenter Server and the components it relies on highly available.

    vCenter Server relies on:

    vCenter Server database: Cluster the database. See the documentation for the database.

    Active Directory structure: Set up with multiple redundant servers.

    Methods for making vCenter Server available:

    Use vSphere High Availability to protect the vCenter Server virtual machine.

    Use VMware vCenter Server Heartbeat.

    vCenter Server Availability: Recommendations

  • 11-9

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    A highly available system is one that is continuously operational for

    a desirably long length of time.

    High Availability

    Level of availability Downtime per year

    99% 87 hours (3.5 days)

    99.9% 8.76 hours

    99.99% 52 minutes

    99.999% 5 minutes

    What level of virtual

    machine availability is

    important to you?

  • 11-10

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA

    vSphere HA

    Level of availability High availability

    Amount of downtime Minimal

    Guest operating systems

    supported

    Works with all supported guest operating

    systems

    ESXi hardware supported Works with all supported ESXi hardware

    Uses

    Use to provide protection against the

    failure of an ESXi host, a virtual machine,

    and a virtual machines applications.

  • 11-11

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA protects against:

    ESXi host failure Virtual machine/guest operating system failure Application failure Other scenarios are discussed in lesson 3:

    Management network failures: Network partition Network isolation

    vSphere HA Failure Scenarios

  • 11-12

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    LUN 1 LUN 2 LUN 3

    vSphere HA Failure Scenario: Host

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine F

    vCenter Server

    ESXi host ESXi host ESXi host

    virtual machine D

    virtual machine E

    virtual machine A virtual machine B

    When a host fails,

    vSphere HA restarts

    the affected virtual

    machines on other

    hosts

    = vSphere HA cluster

  • 11-13

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    LUN 1 LUN 2 LUN 3

    vSphere HA Failure Scenario: Guest Operating System

    vCenter Server

    ESXi host ESXi host

    = vSphere HA cluster

    ESXi host

    When a virtual

    machine stops

    sending heartbeats

    or the virtual

    machine process

    crashes (vmx),

    vSphere HA resets

    the virtual machine

    virtual machine C

    VMware Tools VMware Tools

    virtual machine E

    VMware Tools

    virtual machine F

    VMware Tools

    virtual machine A

    VMware Tools

    virtual machine B

    VMware Tools

    virtual machine D

  • 11-14

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    LUN 1 LUN 2 LUN 3

    vSphere HA Failure Scenario: Application

    vCenter Server

    ESXi host ESXi host ESXi host

    virtual machine E

    application When an application

    fails, vSphere HA

    restarts the affected

    virtual machine on

    the same host.

    Requires installation

    of VMware Tools.

    virtual machine C

    application

    virtual machine F

    application

    virtual machine D

    application

    virtual machine A

    application

    virtual machine B

    application

    = vSphere HA cluster

  • 11-15

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You should be able to do the following:

    Describe the options that you can configure to ensure high availability in a vSphere environment.

    Discuss the response of vSphere HA when an ESXi host, a virtual machine, or an application fails.

    Review of Learner Objectives

  • 11-16

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 2:

    Configuring vSphere HA

  • 11-17

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    After this lesson, you should be able to configure a vSphere HA

    cluster.

    Learner Objectives

  • 11-18

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    A cluster is a collection of

    ESXi hosts and associated

    virtual machines with VMware

    vSphere High Availability and

    DRS enabled.

    A DRS cluster is managed by

    VMware vCenter Server and

    has these resource

    management capabilities:

    Initial placement Load balancing Power management

    What Is a Cluster?

    cluster

  • 11-19

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Enable vSphere HA by creating a cluster or modifying a vSphere

    Distributed Resource Scheduler (DRS) cluster.

    Enabling vSphere HA

  • 11-20

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Configuring vSphere HA Settings

    Disable host

    monitoring when

    performing

    maintenance

    on any cluster/host.

    Enabled is the

    default setting. Admission control

    refers to the amount

    of available resources

    that can be used to

    start virtual machines

    on an ESXi

    host.

    The default setting

    is to disallow

    power-on operations

    that will violate

    the selected

    admission

    control policy.

    Admission control

    helps ensure sufficient

    resources to provide

    high availability.

    Default setting is

    Host failures the

    cluster tolerates.

    VMware

    recommended

    setting

  • 11-21

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Admission Control Policy Choices

    Policy Description Recommended use

    Percentage of cluster

    resources reserved as

    failover spare capacity

    Reserves specified

    percentage of total

    capacity

    When virtual machines have

    highly variable CPU and

    memory reservations

    Host failures the cluster

    tolerates

    Reserves enough

    resources to tolerate

    specified number of host

    failures

    When virtual machines have

    similar CPU/memory

    reservations and similar

    memory overheads

    Specify failover hosts Dedicates one or more

    hosts exclusively for

    failover service

    To accommodate

    organizational policies that

    dictate the use of a passive

    failover host

  • 11-22

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Configure options at the cluster level or per virtual machine.

    Configuring Virtual Machine Options

    VM restart priority determines relative order in

    which virtual machines are restarted after a host

    failure.

    Host Isolation response determines what

    happens to virtual machines when a host loses

    the management network but continues running.

  • 11-23

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Configuring Virtual Machine Monitoring

    Reset a virtual machine

    if its VMware Tools

    heartbeat or VMware

    Tools application

    heartbeats are not

    received.

    Determine how

    quickly failures are

    detected.

    Set monitoring sensitivity for

    individual virtual machines.

  • 11-24

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    In a vSphere HA cluster, heartbeats are:

    Sent between the master and the slave hosts Used to determine if a master or slave host has failed Sent over a heartbeat network The heartbeat network is:

    Implemented using a VMkernel port marked for management Redundant heartbeat networks:

    Allow for the reliable detection of failures

    Importance of Redundant Heartbeat Networks

  • 11-25

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You can use NIC teaming to create a redundant heartbeat network on

    ESXi hosts.

    Both port groups must be VMkernel ports.

    Redundancy Using NIC Teaming

    NIC teaming on an ESXi host

  • 11-26

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You can also create

    redundancy by configuring

    more heartbeat networks:

    On ESXi hosts, add one or more VMkernel networks marked for management traffic.

    Redundancy Using Additional Networks

  • 11-27

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Before changing the networking configuration on the ESXi hosts

    (adding port groups, removing vSwitches):

    Deselect Enable Host Monitoring.

    Place the host in maintenance mode.

    These steps prevent unwanted attempts to fail over virtual machines.

    Network Configuration and Maintenance

  • 11-28

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    How much CPU and memory resources is the cluster using now?

    How much reserved capacity remains?

    Cluster Resource Allocation Tab

  • 11-29

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    The vSphere HA Cluster Status window

    displays details about host operational

    status, virtual machine protection, and

    heartbeat datastores

    The Configuration Issues window displays

    the current vSphere HA operational status,

    including the specific status and errors for

    each master and slave host in the cluster.

    Monitoring Cluster Status

    clusters Summary tab

  • 11-30

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Setting vSphere HA Advanced Parameters

    Set advanced

    parameters by

    editing vSphere HA

    cluster settings.

  • 11-31

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Set default (minimum) slot size:

    das.vmCpuMinMHz das.vmMemoryMinMB Set maximum slot size:

    das.slotCpuInMHz das.slotMemInMB

    Advanced Options to Control Slot Size

  • 11-32

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You should be able to configure a vSphere HA cluster.

    Review of Learner Objectives

  • 11-33

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 3:

    vSphere HA Architecture

  • 11-34

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    After this lesson, you should be able to do the following:

    Describe heartbeat mechanisms used by vSphere HA. Identify and discuss additional failure scenarios.

    Learner Objectives

  • 11-35

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA Architecture: Agent Communication

    vCenter Server

    ESXi host (slave)

    FDM

    ESXi host (master)

    FDM

    ESXi host (slave)

    FDM

    vpxd

    hostd hostd hostd

    datastore datastore datastore

    = Management network

    vpxa vpxa vpxa

  • 11-36

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA Architecture: Network Heartbeats

    vCenter Server

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine D

    virtual machine E

    virtual machine F

    slave host

    slave host

    master host

    VMFS VMFS NAS/NFS

    Management network 1

    Management network 2

  • 11-37

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA Architecture: Datastore Heartbeats

    Management network 1

    Management network 2

    vCenter Server

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine D

    virtual machine E

    virtual machine F

    slave host master host slave host

    VMFS VMFS NAS/NFS

    Cluster Edit Settings window

  • 11-38

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Slave host failure Master host failure Host isolation Management network failures:

    Network partition Network isolation

    Additional vSphere HA Failure Scenarios

  • 11-39

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Failed Slave Host

    vCenter Server

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine D

    virtual machine E

    virtual machine F

    slave host

    master host

    slave host

    NAS/NFS (lock file)

    ?

    file locks file locks

    primary heartbeat network

    alternate heartbeat network

    VMFS (heartbeat region)

  • 11-40

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Failed Master Host

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine D

    virtual machine E

    virtual machine F

    slave host MOID: 98

    file locks

    NAS/NFS

    (lock file)

    file locks

    vCenter Server

    primary heartbeat network

    alternate heartbeat network

    MOID = managed object ID

    default gateway

    (isolation address)

    slave host MOID: 100

    VMFS (heartbeat region)

    master host MOID: 99

    master host MOID: 99 ?

  • 11-41

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Isolated Host

    virtual machine A

    virtual machine B

    virtual machine C

    virtual machine D

    virtual machine E

    virtual machine F

    ESXi host ESXi host

    default gateway

    (isolation address)

    ESXi host

    If the host is not

    observing any election

    traffic on the

    management and

    cannot ping its

    isolation addresses,

    the host is isolated.

  • 11-42

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Host isolation events can be minimized through good design:

    Implement redundant heartbeat networks. Implement redundant isolation addresses. If host isolation events do occur, good design enables vSphere HA to

    determine whether the isolated host is still alive:

    Implement datastores so that they are separated from the management network using one or both of the following approaches:

    Fibre Channel over fiber optic Physically separating your IP storage network from the management

    network

    Design Considerations

  • 11-43

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Network Partition

    default gateway

    (isolation address)

    virtual machine A

    virtual machine B

    master

    host

    virtual machine C

    virtual machine D

    slave

    host

    virtual machine E

    virtual machine F

    virtual machine G

    virtual machine H

    vCenter

    Server

    Only one

    master host

    communicates

    with vCenter

    Server.

    partition 1 partition 2

    master

    host 1

    slave

    host

    slave

    host 1

    slave

    master 2 slave

    host

    slave

    host 2

  • 11-44

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    In this lab, you will demonstrate vSphere HA functionality.

    1. Create a cluster enabled for vSphere HA.

    2. Add your ESXi host to a cluster.

    3. Test vSphere HA functionality.

    4. Determine vSphere HA cluster resource usage.

    5. Manage vSphere HA slot size.

    6. Configure a vSphere HA cluster with strict admission control.

    7. Prepare for upcoming labs.

    Lab 19

  • 11-45

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    In this lab, you will design a network configuration for an ESXi host,

    based on a set of requirements.

    1. Analyze the requirements.

    2. Design virtual switches and physical connections.

    Lab 20 (Optional)

  • 11-46

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You should be able to do the following:

    Describe heartbeat mechanisms used by vSphere HA. Identify and discuss additional failure scenarios.

    Review of Learner Objectives

  • 11-47

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 4:

    Introduction to Fault Tolerance

  • 11-48

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    After this lesson, you should be able to do the following:

    List VMware vSphere Fault Tolerance requirements and limitations. Describe Fault Tolerance operation.

    Learner Objectives

  • 11-49

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Fault Tolerance:

    A fault-tolerant system is designed so that, in the event of an unplanned outage, a backup virtual machine can immediately take over with no loss of service. (The backup virtual machine is called a secondary virtual machine.)

    Provides a higher level of business continuity than vSphere HA Provides zero downtime and zero data loss for applications

    Fault Tolerance can be used for any application that needs to be

    available at all times.

    Fault Tolerance can be used with DRS:

    Fault-tolerant virtual machines benefit from better initial placement and are included in the clusters load-balancing calculations.

    What Is Fault Tolerance?

  • 11-50

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Fault Tolerance Characteristics

    Fault Tolerance

    Level of availability Fault tolerance

    Amount of downtime Zero

    Guest operating systems supported Works with all supported guest

    operating systems

    ESXi hardware supported Widely compatible

    Uses Use to provide fault tolerance to

    your critical virtual machines.

  • 11-51

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Fault Tolerance in Action

    Fault Tolerance provides zero-downtime, zero-data-loss

    protection to virtual machines in a vSphere HA cluster.

    primary

    VM

    secondary

    VM

    new

    primary

    VM

    new

    secondary

    VM

    vLockstep technology vLockstep technology

  • 11-52

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Check the requirements and limitations of Fault Tolerance.

    Ensure enough ESXi hosts for fault-tolerant virtual machines:

    No more than four fault-tolerant virtual machines (primaries or secondaries) on any single host

    Store ISOs images on shared storage for continuous access:

    Especially if used for important operations Disable BIOS-based power management:

    Prevents the secondary virtual machine from having insufficient CPU resources

    Fault Tolerance Guidelines

  • 11-53

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Enabling Fault Tolerance on a Virtual Machine

  • 11-54

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    In this lab, you will configure Fault Tolerance for a virtual machine

    and verify that Fault Tolerance works.

    1. Prepare the virtual machine.

    2. Enable Fault Tolerance logging.

    3. Activate Fault Tolerance.

    4. Test Fault Tolerance.

    5. Disable Fault Tolerance.

    Lab 21

  • 11-55

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You should be able to do the following:

    List Fault Tolerance requirements and limitations. Describe Fault Tolerance operation.

    Review of Learner Objectives

  • 11-56

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Lesson 5:

    Introduction to Replication

  • 11-57

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    After this lesson, you should be able to do the following:

    Describe VMware Replication operation. Detail Replication configurations for different scenarios. Outline virtual machine recovery using Replication. Describe the role Replication plays in a disaster recovery strategy.

    Learner Objectives

  • 11-58

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere Replication

    vSphere vSphere

    source target

    VMware vSphere Replication

  • 11-59

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Replication Appliance

    Standard OVF Virtual Appliance

    Delivered with the vSphere Platform

    Bundled with most vSphere

    Editions

    vSphere Replication Appliance

  • 11-60

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Full Integration with vSphere Web Client

    Single interface and common management

    Designed to integrate with other products

    Doesnt require console hopping

  • 11-61

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Supported Product Versions

    Supported? Product

    vCenter

    Yes Version 5.1 with Web Client

    No Version 5.0 and prior

    vSphere

    Yes 5.1

    Yes 5.0

    No 4.x and prior

    Yes Storage vMotion/SDRS

    Yes Standalone / VMware vCenter Site

    Recovery Manager

    No SRM 5.0 VR

    Yes Embedded, DB2, Oracle, SQL Server

  • 11-62

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    How Replication Works

    Deploy and configure VR components

    Pair with a destination

    Configure VR for a single virtual

    machine

    * Will need to define RPO, Target Datastore, Target

    Folder or Resource pool

  • 11-63

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Only Replicates Changed Blocks

    After ensuring data is consistent on both sites

    VR Agent tracks all changing blocks through vSCSI filter

    Changed blocks replicated as per RPO

    AII B CI DI E A B C D E

    Source Disk Target Disk

    A C D

    tcp/44046

    Disks are always consistent

  • 11-64

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    VSS writer integration

    Works with VMware Tools

    Quiescent Applications with vSphere Replication

    Integrates with VSS and application writers for consistent applications.

    ]

    Create quiescent copies of virtual machines including apps.

  • 11-65

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Single-Site vSphere Replication Architecture

    Powered-on VMDKs only.

    Independent of disk format and snapshots

    VR works at the virtual device layer above VMDK.

    FT, linked clones, VM Templates are not

    supported with VR.

    Virtual Hardware 7 or later is required for

    virtual machines to be protected by VR.

    15 minute most aggressive Recovery Point

    Objective.

    vSphere Replication Limitations

  • 11-66

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Single-Site vSphere Replication Architecture

    Storage

    vSphere Client

    Storage

    VMDK1 (VMDK1)

    VR

    Appliance

    vCenter Server

    Delta

    NFC

    Replication configured

    through client

    Agents track

    changes and send blocks to the VR

    appliance

    VR Appliance

    writes blocks to

    disk through

    NFC

    vSphere

    VR Agent

    vSphere

    VR Agent

  • 11-67

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Remote Offices Replicating with a Single VC

    Storage Storage

    vSphere Client

    Storage

    VR

    Appliance

    vCenter Server

    vSphere

    VRA

    vSphere vSphere

    VRA

    vSphere

    Storage

    VMDK3

    vSphere vSphere

    VRA VRA

    VRA VRA

    (VMDK1) (VMDK2) (VMDK3)

    VMDK1

    VMDK2

    VR Server

    VR Server

    NFC NFC

  • 11-68

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Main Datacenter Replicating to Remote Offices

    Storage Storage

    vSphere Client

    Storage

    VR

    Appliance

    vCenter Server

    vSphere

    VRA

    vSphere vSphere

    VRA

    vSphere

    Storage

    VMDK3

    vSphere vSphere

    NFC NFC

    NFC NFC

    (VMDK1)

    (VMDK2) (VMDK3) VMDK1 VMDK2

    VR Server

    VR Server

  • 11-69

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Four Steps for Full Recovery

    Right-click, select Recover

    Select a target folder

    Select a target resource

    Click Finish

    Will validate your choices as you go

  • 11-70

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere Replication and SRM

    SRM users can choose to use array

    replication and vSphere Replication.

    If VR is already installed and

    configured, SRM uses it when it is

    installed.

    Alternately you can install VR as part of

    SRM install.

    Choice of replication options for SRM

  • 11-71

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    Builds a Foundation for Disaster Recovery with SRM

    vSphere Replication is simply protection. SRM is disaster recovery.

    VR Unique Functions

    Next generation web client

    Common Functionality

    Replication Engine

    Application Quiescence

    SRM Specific Functions

    Full DR Orchestration Recovery planning

    Repeatable, non-intrusive

    testing

    Grouping of protected

    virtual machines

    Parallel recovery of virtual

    machines or groups of

    virtual machines

    Full site or partial site

    failover

    Reprotection and failback Automation and APIs

    Works with array replication Reporting and more

  • 11-72

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    You should be able to do the following:

    Describe Replication operation. Detail Replication configuration in different scenarios. Outline virtual machine recovery using Replication. Describe the role Replication plays in a disaster recovery strategy.

    Review of Learner Objectives

  • 11-73

    2012 VMware Inc. All rights reserved

    VMware vSphere: Install, Configure, Manage Revision A

    vSphere HA restarts virtual machines on the remaining hosts in the cluster.

    Hosts in vSphere HA clusters have a master/slave relationship. Implement redundant heartbeat networks either with NIC teaming or by

    creating additional heartbeat networks.

    Fault Tolerance provides zero downtime for applications that need to be available at all times.

    Replication can be used to protect virtual machines as part of a disaster recovery strategy.

    Questions?

    Key Points