Architecting VMware vSAN 6.2 : vSAN Technology and Features Overview : 3.2 vSAN Key Features : 3.2.9 Scalability : 3.2.9.3 vSAN 6.2 Scalability Limits
   
3.2.9.3 vSAN 6.2 Scalability Limits
Requirements for vSAN scalability are shown in the following table. Always validate these limits with the latest updates to the VMware vSphere 6.0 Configuration Maximums guide (https://www.vmware.com/pdf/vsphere6/r60/vsphere-60-configuration-maximums.pdf).
Table 2. vSAN Scalability Limitations
Option
Limit
vSAN ESXi host
 
vSAN disk groups per host
5
Mechanical disks per disk group
7
SSD disks per disk group
1
Spinning disks in all disk groups per host
35
Components per vSAN host
9000
vSAN Cluster
 
Number of vSAN nodes in a cluster
64
Number of datastores per cluster
1
vSAN virtual machines
 
Virtual machines per host
200
Virtual machines per cluster
6400
Virtual machine virtual disk size
62 TB
vSAN VM storage policy
 
Disk stripes per object
12
Percentage of flash-read cache reservation
100
Failures-to-tolerate
3 if VM disk is <= 16 TB
1 if VM disk is > 16 TB
Percentage of object space reservation
100
Virtual networking
 
vSAN networks/physical network fabric
2
Note These scalability limits for the release of vSAN version 6.2 are correct at time of this writing.