Davoud Teimouri - Virtualization & Datacenter

A technology blog mainly focusing on virtualization and datacenter

vSphere Configuration Maximums


Virtual Machine Maximums

vSphere / Virtual Infrastructure6.
Virtual CPUs per virtual machine128128646432884421
RAM per virtual machine6TB4TB1TB1TB1TB255GB255GB65GB16GB3,6GB2GB
Virtual SCSI adapters per virtual machine44444444444
Virtual SCSI targets per virtual SCSI adapter151515
Virtual SCSI targets per virtual machine606060
Virtual NVMe adapters per virtual machine4
Virtual NVMe targets per virtual SCSI adapter15
Virtual NVMe targets per virtual machine60
Virtual SATA adapters per virtual machine444
Virtual SATA devices per virtual SATA adapter303030
Virtual disk size62TB62TB62TB2TB2TB2TB2TB2TB2TB
IDE controllers per virtual machine11111111
IDE devices per virtual machine44444444
Floppy controllers per virtual machine1111111111
Floppy devices per virtual machine2222222222
Virtual NICs per virtual machine101010101010104444
USB controllers per virtual machine111111
USB devices connected to a virtual machine202020202020
USB 3.0 devices per virtual machine11111
Video memory per virtual machine2GB512MB512MB
Parallel ports per virtual machine3333333331

Host Maximums

vSphere / Virtual Infrastructure6.
Logical CPUs per host576480320160160160643232168
Virtual machines per host102410245125125123203201281288064
Virtual CPUs per host409640964096204820485125121281288064
Virtual CPUs per core323232252525208888
RAM per host12TB12TB4TB2TB2TB1TB1TB256GB256GB64GB64GB

Network Maximums

vSphere / Virtual Infrastructure6.
Total virtual network switch ports per host4096409640964096409640964096127
Maximum active ports per host10161016101610501016101610161016
Virtual network switch creation ports4088408840884088408840884088
Port groups512512512256256512512512
Distributed virtual network switch ports per vCenter6000060000600006000030000200006000
Static port groups per vCenter1000010000100001000050005000512
Ephemeral port groups per vCenter1016101610162562561016
Hosts per distributed switch2000100050050035035064
Distributed switches per vCenter128128128128323216
VMDirectPath PCI/PCIe devices per host8888888
VMDirectPath PCI/PCIe devices per virtual machine444444
Concurrent vMotion operations per host (1Gb/s network)4444422
Concurrent vMotion operations per host (10Gb/s network)88888

Storage Maximums

vSphere / Virtual Infrastructure6.
Software iSCSI NICs per server888888
Number of total paths on a server204810241024102410241024
Number of paths to a iSCSI LUN888888
Software iSCSI targets256256256256256256256
NFS mounts per host2562562562562566464
FC LUNs per host512256256256256256256256256
FC LUN ID163831023255255255255255255255
FC Number of paths to a LUN323232323232323232
Number of HBAs of any type8888888
HBA ports1616161616161616
Targets per HBA25625625625625625625615
Software FCoE adapters44444
Volumes per host512256256256256256256256
Hosts per volume6464646464646432
Powered on virtual machines per VMFS volume20482048204820482048256
Concurrent vMotion operations per datastore128128128128128
Concurrent Storage vMotion operations per datastore88888
Concurrent Storage vMotion operations per host22222
Concurrent non vMotion provisioning operations per host88888
VMFS Volume size64TB64TB64TB64TB64TB64TB64TB64TB
Virtual disks per datastore cluster900090009000
Datastores per datastore cluster646464
Datastore clusters per vCenter256256256

Fault Tolerance Maximums

vSphere / Virtual Infrastructure6.
Virtual disks16161616
Virtual CPUs per virtual machine44111
RAM per FT VM64 GB64GB64GB64GB64GB
Virtual machines per host44444

Virtual SAN Maximums

vSphere / Virtual Infrastructure6.56.05.5
Virtual SAN disk groups per host555
Magnetic disks per disk group777
SSD disks per disk group111
Spinning disks in all diskgroups per host353535
Components per Virtual SAN host900090003000
Number of Virtual SAN nodes in a cluster646432
Number of Virtual SAN nodes in a cluster (All-Flash)32
Number of datastores per cluster111
Virtual machines per host200200100
Virtual machines per cluster600064003200
Virtual machine virtual disk size62TB62TB2032GB
Disk stripes per object121212
Percentage of flash read cache reservation100100100
Failure to tolerate333
Percentage of object space reservation100100100
Virtual SAN networks/physical network fabrics222

vCenter Server Maximums

vSphere / Virtual Infrastructure6.
Hosts per vCenter Server200010001000100010001000300200200
Powered on virtual machines25000100001000010000100001000030002000
Registered virtual machines35000150001500015000150001500045002000
Linked vCenter Servers10101010101010
Hosts in linked vCenter Servers4000400030003000300030001000
Powered on virtual machines in linked vCenter30000300003000030000300003000010000
Registered virtual machines in linked vCenter50000500005000050000500005000015000
Concurrent Client connections6018010010010010030
Number of host per datacenter2000500500500500400100
MAC addresses per vCenter Server6553665536655366553665536
USB devices connected at vSphere Client20202020

Cluster and Resource Pool Maximums

vSphere / Virtual Infrastructure6.
Hosts per cluster6464323232323232
Virtual machines per cluster8000400040004000300030001280
Virtual machines per host10241024512512512320100
Maximum concurrent host HA failover323244
Failover as percentage of cluster100%100%50%50%
Resource pools per cluster16001600160016001600512512128
Resource pools per host160016001600160016004096
Children per resource pool110011001024102410241024
Resource pool tree depth8888881212


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