vSAN Configuration Maximums 6.X

Previous Posts we have discussed about  vSAN Cluster Configuration  , Here I am sharing the maximum supported configuration on vSAN 6.0 and 6.5  .

vSAN Configuration Maximums

  • vSAN ESXi host
  • vSAN Cluster
  • vSAN virtual machines
  • vSAN iSCSI Target , New feature only Available with 6.
VMware vSAN 6.5 6.0

Virtual SAN ESXi host

Virtual SAN disk groups per host 5 5
Magnetic disks per disk group 7 7
SSD disks per disk group 1 1
Spinning disks in all diskgroups per host 35 35
Components per Virtual SAN host 9000 9000
Cache tier maximum devices per host 5 5
Capacity tier maximum devices per diskgroup 7 7
Capacity tier maximum devices 35 35

Virtual SAN Cluster

Number of Virtual SAN hosts in a cluster 64 (Hybrid)               64 (All-Flash) 64
Number of datastores per cluster 1 1

Virtual SAN virtual machines

Virtual machines per host 200 200
Virtual machines per cluster 6000 6400
Virtual machine virtual disk size 62 TB 62 TB
Disk stripes per object 12 12
Percentage of flash read cache reservation 100 100
Failure to tolerate 3 for VM virtual disk size <= 16 TB 3 for VM virtual disk size<= 16 TB
1 for VM virtual disk size> 16 TB
Percentage of object space reservation 100 100
Virtual SAN networks/physical network fabrics 2 2

Virtual SAN iSCSI Target

Number of iSCSI LUNs per Cluster 1024 NA
Number of iSCSI Targets per Cluster 128
Number of iSCSI LUNs per Target 256
Max iSCSI LUN size 62 TB
Number of iSCSI sessions per Node 1024
iSCSI IO queue depth per Node 4096
Number of outstanding writes per iSCSI LUN 128
Number of outstanding IOs per iSCSI LUN 256
Number of initiators who register PR key for a iSCSI LUN 64

Also added to this post find Limitations of vSAN

vSAN  ESXi host cannot be part of multiple vSAN clusters.
vSphere DPM is not supported by vSAN
 RDM, VMFS, diagnostic partition will not supported by vSAN .
Space Efficient Sparse Disk (SE Sparse disks ) will not supported on vSAN .
vSAN does not support SCSI reservations.
Storage I/O Control is not supported in vSAN .

Reference KB