Book Image

Dell VxRail System Design and Best Practices

By : Victor Wu
Book Image

Dell VxRail System Design and Best Practices

By: Victor Wu

Overview of this book

Virtualized systems are well established now, and their disparate components can be found bundled together in hyper-converged infrastructures, such as VxRail from Dell EMC. Dell VxRail System Design and Best Practices will take you, as a system architect or administrator, through the process of designing and protecting VxRail systems. While this book assumes a certain level of knowledge of VMware, vSphere 7.x, and vCenter Server, you’ll get a thorough overview of VxRail's components, features, and architecture, as well as a breakdown of the benefits of this hyper-converged system. This guide will give you an in-depth understanding of VxRail, as well as plenty of practical examples and self-assessment questions along the way to help you plan and design every core component of a VxRail system – from vSAN storage policies to cluster expansion. It's no good having a great system if you lose everything when it breaks, so you'll spend some time examining advanced recovery options, such as VMware Site Recovery Manager and Veeam Backup and Replication. By the end of this book, you will have got to grips with Dell’s hyper-converged VxRail offering, taking your virtualization proficiency to the next level.
Table of Contents (17 chapters)
1
Part 1: Getting Started with the VxRail Appliance 7.x System
4
Part 2: Design of the VxRail Appliance 7.x System
9
Part 3: Design of Data Protection for the VxRail System

Failure scenarios of VxRail Stretched Cluster

This section will discuss some failure scenarios of VxRail Stretched Cluster. The VMs allocated on VxRail Stretched Cluster trigger different behavior when any hardware failure (for example, VxRail node, vSAN witness, HDD, network uplinks, and so on) exists in the cluster. In Figure 7.14, two VMs (VM A and VM B) are running on this VxRail Stretched Cluster instance; these two VMs are allocated on the preferred site, and the different VM storage policies assign each VM. VM A is configured with VM Storage Policy A, and VM B is configured with VM Storage Policy B:

Figure 7.14 – VxRail Stretched Cluster with eight nodes

Now, we will discuss each failure scenario.

Failure scenario one

In Figure 7.15, what status will the VMs trigger if the vSAN communication is disconnected between the preferred and secondary sites?

Figure 7.15 – Failure scenario one of VxRail Stretched Cluster...