Setup Guide

vSAN ReadyNode (vSRN)

A vSRN is a certied hardware form factor for vSAN deployment, which is recommended by the server OEM and VMware. vSRN is ideal

for larger data center environments looking for hyper-converged building blocks for automation. The predened hardware conguration is

certied with specic versions of vSAN and listed in the VMware Compatibility Guide (VCG). Dell EMC provides multiple vSAN

ReadyNodes that are built on PowerEdge servers and certied to run dierent VMware vSAN versions. For more information, see VMware

Compatibility Guide for Dell EMC. Each Dell EMC vSRN contains predened components such as processor, memory, network, storage I/O

Controller, HDDs, and SSDs combined with a VMware ESXi certied PowerEdge server. So, multiple ReadyNode options on dierent

performance proles are available to meet various types of workload requirements. For more information, see vSAN Hardware Quick

Reference Guide. To understand the correlation between ESXi builds and vSAN versions, see ESXi-vSAN versioning.

vSRNs contain the following features:

• vSRN are classied into All Flash (AF) and Hybrid (HY) proles

NOTE: The vSRN prole is created based on dierent design considerations. For more information, see vSAN Hardware Quick

Reference Guide.

• Prole options of vSRN are AF8, AF6, AF4, HY8, HY6, HY4, and HY2 for AF and HY ReadyNodes.

• AF contains only SSD drives (SAS/SATA/NVMe) that are required for both cache and capacity tier

• HY vSRNs use HDDs in capacity tier and SSDs in caching tier

NOTE

: For more information about the components that can be changed in vSRN and the components that are not suitable

for vSRN, see VMware blog.

Following are the conditions to replace the drives in vSAN:

• Dell EMC vSRNs are available in multiple proles to meet various workload requirements. Dell EMC provides NVMe AF ReadyNodes

that have high-performance NVMe drives used in cache and capacity tiers.

NOTE

: Dell EMC oers vSAN with NVMe All Flash vSRNs conguration and the cache and capacity tiers that are congured

with high-performance NVMe drives.

• Drives that are part of cache tier and capacity tier can be replaced with the drives having increased capacity size, performance class,

and endurance class. Ensure that the drives that are selected for replacements are listed in VCG.

• VMware and Dell EMC recommends that you use a homogenous vSAN cluster.

NOTE

: If you want to replace the drive with a dierent model, ensure that the previous condition is satised. However, you

may face performance issues when you replace the drive with a dierent model.

• When the capacity tier drive is replaced with a higher capacity drive, the overall size of vSAN increases accordingly.

vSAN ReadyNode (vSRN) 7