VMware vSphere ESX and vCenter Configuration Maximums

The following listings are a comprehensive collection of configuration maximums from VMware products.

Virtual Machine Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5ESX 3ESX 2ESX 1
Virtual CPUs per virtual machine128128128646432884421
RAM per virtual machine6128 GB6128 GB4TB1TB1TB1TB255GB255GB65GB16GB3,6GB2GB
Virtual SCSI adapters per virtual machine444444444444
Virtual SCSI targets per virtual SCSI adapter15151515
Virtual SCSI targets per virtual machine60606060
Virtual NVMe adapters per virtual machine44
Virtual NVMe targets per virtual SCSI
Virtual NVMe targets per virtual machine6060
Virtual SATA adapters per virtual machine4444
Virtual SATA devices per virtual SATA adapter30303030
Virtual disk size62TB62TB62TB62TB2TB2TB2TB2TB2TB2TB
IDE controllers per virtual machine111111111
IDE devices per virtual machine444444444
Floppy controllers per virtual machine11111111111
Floppy devices per virtual machine22222222222
Virtual NICs per virtual machine10101010101010104444
USB controllers per virtual machine1111111
USB devices connected to a virtual machine20202020202020
Serial ports per virtual machine32323232323232
Parallel ports per virtual machine33333333331
Concurrent remote console connections40404040404040401010
Video memory per virtual machine2 GB2 GB512MB512MB
NVDIMM controllers per VM

Host Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5ESX 3ESX 2ESX 1
Logical CPUs per host768576480320160160160643232168
Virtual machines per host1024102410245125125123203201281288064
Virtual CPUs per host4096409640964096204820485125121281288064
Virtual CPUs per core32323232252525208888
RAM per host16TB12TB12TB4TB2TB2TB1TB1TB256GB256GB64GB64GB
LUNs per server1024512256256256256256256
Non-volatile memory per host

vCenter Server Maximums

vCenter Server MaximumsESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5ESX 3
Hosts per vCenter Server2000200010001000100010001000300200200
Powered on virtual machines2500025000100001000010000100001000030002000
Registered virtual machines3500035000150001500015000150001500045002000
Linked vCenter Servers1515101010101010
Hosts in linked vCenter Servers50004000400030003000300030001000
Powered on virtual machines in linked vCenter5000030000300003000030000300003000010000
Registered virtual machines in linked vCenter7000050000500005000050000500005000015000
Number of host per datacenter20002000500500500500400100
MAC addresses per vCenter Server655366553665536655366553665536
USB devices connected at vSphere Client20202020

Cluster and Resource Pool Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5
Hosts per cluster646464323232323232
Virtual machines per cluster80008000400040004000300030001280
Virtual machines per host102410241024512512512320100
Resource pools per cluster160016001600160016001600512512128
Resource pools per host1600160016001600160016004096
Children per resource pool1600160016001024102410241024
Resource pool tree depth88888881212

Network Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5ESX 3
Total virtual network switch ports per host40964096409640964096409640964096127
Maximum active ports per host101610161016101610501016101610161016
Virtual network switch creation ports40884088408840884088408840884088
Port groups512512512512256256512512512
Distributed virtual network switch ports per vCenter600006000060000600006000030000200006000
Static port groups per vCenter100001000010000100001000050005000512
Ephemeral port groups per vCenter10161016101610162562561016
Hosts per distributed switch20002000100050050035035064
Distributed switches per vCenter128128128128128323216

Storage Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5ESX 4.1ESX 4.0ESX 3.5ESX 3
Software iSCSI NICs per server8888888
Number of total paths on a server4096204810241024102410241024
Number of paths to a iSCSI LUN8888888
Software iSCSI targets256256256256256256256256
NFS mounts per host2562562562562562566464
FC LUNs per host1024512256256256256256256256256
FC LUN ID16383163831023255255255255255255255
FC Number of paths to a LUN32323232323232323232
Number of HBAs of any type88888888
HBA ports161616161616161616
Targets per HBA25625625625625625625625615
Software FCoE adapters444444
Volumes per host1024512256256256256256256256
Hosts per volume646464646464646432
Powered on virtual machines per VMFS volume204820482048204820482048256
Concurrent vMotion operations per datastore128128128128128128
Concurrent Storage vMotion operations per datastore888888
Concurrent Storage vMotion operations per host222222
Concurrent non vMotion provisioning operations per host888888
VMFS Volume size64TB64TB64TB64TB64TB64TB64TB64TB64TB
Virtual disks per datastore cluster9000900090009000
Datastores per datastore cluster64646464
Datastore clusters per vCenter256256256256

Fault Tolerance Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5ESX 5.1ESX 5.0
Virtual disks1616161616
Virtual CPUs per virtual machine844111
RAM per FT VM128GB64GB64GB64GB64GB64GB
Virtual machines per host444444
Disk size2 TB2 TB2 TB

Virtual SAN Maximums

 ESX 6.7ESX 6.5ESX 6.0ESX 5.5
Virtual SAN disk groups per host5555
Magnetic disks per disk group7777
SSD disks per disk group1111
Spinning disks in all diskgroups per host35353535
Components per Virtual SAN host9000900090003000
Number of Virtual SAN nodes in a cluster64646432
Number of Virtual SAN nodes in a cluster (All-Flash)3232
Number of datastores per cluster1111
Virtual machines per host200200200100
Virtual machines per cluster6000600064003200
Virtual machine virtual disk size62TB62TB62TB2032GB
Disk stripes per object12121212
Percentage of flash read cache reservation100100100100
Failure to tolerate3333
Percentage of object space reservation100100100100
Virtual SAN networks/physical network fabrics2222

All informations are based on VMware documentation: