There has been a lot of improvements and research done in each product released by VMware. We all know that VMware has been specializing in Virtualizing Server Infrastructure and have been making life easier for the Server Administrators around the world. With every new product release, VMware pushes very hard to enable more features extending their support for more Configuration.
In this post, I would be collating all the configurations maximums supported by vSphere product and putting them all together.
Virtual Machine Maximums
| ESX 6.0 | ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | ESX 3 | ESX 2 | ESX 1 | |
| Virtual CPUs per virtual machine | 128 | 64 | 64 | 32 | 8 | 8 | 4 | 4 | 2 | 1 |
| RAM per virtual machine | 4TB | 1TB | 1TB | 1TB | 255GB | 255GB | 65GB | 16GB | 3,6GB | 2GB |
| Virtual SCSI adapters per virtual machine | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Virtual SCSI targets per virtual SCSI adapter | 15 | 15 | ||||||||
| Virtual SCSI targets per virtual machine | 60 | 60 | ||||||||
| Virtual SATA adapters per virtual machine | 4 | 4 | ||||||||
| Virtual SATA devices per virtual SATA adapter | 30 | 30 | ||||||||
| Virtual disk size | 62TB | 62TB | 2TB | 2TB | 2TB | 2TB | 2TB | 2TB | ||
| IDE controllers per virtual machine | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||
| IDE devices per virtual machine | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |||
| Floppy controllers per virtual machine | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Floppy devices per virtual machine | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Virtual NICs per virtual machine | 10 | 10 | 10 | 10 | 10 | 10 | 4 | 4 | 4 | 4 |
| USB controllers per virtual machine | 1 | 1 | 1 | 1 | 1 | |||||
| USB devices connected to a virtual machine | 20 | 20 | 20 | 20 | 20 | |||||
| Parallel ports per virtual machine | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | |
| USB 3.0 devices per virtual machine | 1 | 1 | ||||||||
| Concurrent remote console connections | 40 | 40 | 40 | 40 | 40 | 40 | 10 | 10 | ||
| Video memory per virtual machine | 512MB | 512MB |
Host Maximums
| ESX 6.0 | ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | ESX 3 | ESX 2 | ESX 1 | |
| Logical CPUs per host | 480 | 320 | 160 | 160 | 160 | 64 | 32 | 32 | 16 | 8 |
| Virtual machines per host | 2048 | 512 | 512 | 512 | 320 | 320 | 128 | 128 | 80 | 64 |
| Virtual CPUs per host | 4096 | 4096 | 2048 | 2048 | 512 | 512 | 128 | 128 | 80 | 64 |
| Virtual CPUs per core | 32 | 32 | 25 | 25 | 25 | 20 | 8 | 8 | 8 | 8 |
| RAM per host | 12TB | 4TB | 2TB | 2TB | 1TB | 1TB | 256GB | 256GB | 64GB | 64GB |
| LUNs per server | 256 | 256 | 256 | 256 | 256 | 256 |
vCenter Server Maximums
| vCenter Server Maximums | ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | ESX 3 |
| Hosts per vCenter Server | 1000 | 1000 | 1000 | 1000 | 300 | 200 | 200 |
| Powered on virtual machines | 10000 | 10000 | 10000 | 10000 | 3000 | 2000 | |
| Registered virtual machines | 15000 | 15000 | 15000 | 15000 | 4500 | 2000 | |
| Linked vCenter Servers | 10 | 10 | 10 | 10 | 10 | ||
| Hosts in linked vCenter Servers | 3000 | 3000 | 3000 | 3000 | 1000 | ||
| Powered on virtual machines in linked vCenter | 30000 | 30000 | 30000 | 30000 | 10000 | ||
| Registered virtual machines in linked vCenter | 50000 | 50000 | 50000 | 50000 | 15000 | ||
| Concurrent vSphere Clients | 100 | 100 | 100 | 100 | 30 | ||
| Number of host per datacenter | 500 | 500 | 500 | 400 | 100 | ||
| MAC addresses per vCenter Server | 65536 | 65536 | 65536 | ||||
| USB devices connected at vSphere Client | 20 | 20 | 20 |
Cluster and Resource Pool Maximums
| ESX 6.0 | ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | |
| Hosts per cluster | 64 | 32 | 32 | 32 | 32 | 32 | 32 |
| Virtual machines per cluster | 4000 | 4000 | 4000 | 3000 | 3000 | 1280 | |
| Virtual machines per host | 2048 | 512 | 512 | 512 | 320 | 100 | |
| Maximum concurrent host HA failover | 32 | 32 | 4 | 4 | |||
| Failover as percentage of cluster | 100% | 100% | 50% | 50% | |||
| Resource pools per cluster | 1600 | 1600 | 1600 | 512 | 512 | 128 | |
| Resource pools per host | 1600 | 1600 | 1600 | 4096 | |||
| Children per resource pool | 1024 | 1024 | 1024 | 1024 | |||
| Resource pool tree depth | 8 | 8 | 8 | 8 | 12 | 12 |
Network Maximums
| ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | ESX 3 | |
| Total virtual network switch ports per host | 4096 | 4096 | 4096 | 4096 | 4096 | 127 | |
| Maximum active ports per host | 1016 | 1050 | 1016 | 1016 | 1016 | 1016 | |
| Virtual network switch creation ports | 4088 | 4088 | 4088 | 4088 | 4088 | ||
| Port groups | 512 | 256 | 256 | 512 | 512 | 512 | |
| Distributed virtual network switch ports per vCenter | 60000 | 60000 | 30000 | 20000 | 6000 | ||
| Static port groups per vCenter | 10000 | 10000 | 5000 | 5000 | 512 | ||
| Ephemeral port groups per vCenter | 1016 | 256 | 256 | 1016 | |||
| Hosts per VDS | 500 | 500 | 350 | 350 | 64 | ||
| Distributed switches per vCenter | 128 | 128 | 32 | 32 | 16 | ||
| e1000 1Gb Ethernet ports (Intel PCI?x) | 32 | 32 | 32 | 32 | 32 | 32 | |
| e1000e 1Gb Ethernet ports (Intel PCI?e) | 24 | 24 | 24 | 24 | 32 | 32 | 32 |
| igb 1Gb Ethernet ports (Intel) | 16 | 16 | 16 | 16 | 16 | ||
| tg3 1Gb Ethernet ports (Broadcom) | 32 | 32 | 32 | 32 | 32 | ||
| bnx2 1Gb Ethernet ports (Broadcom) | 16 | 16 | 16 | 16 | 16 | ||
| forcedeth 1Gb Ethernet ports (NVIDIA) | 2 | 2 | 2 | 2 | |||
| nx_nic 10Gb Ethernet ports (NetXen) | 8 | 8 | 8 | 4 | 4 | ||
| ixgbe 10Gb Ethernet ports (Intel) | 8 | 8 | 8 | 4 | 4 | ||
| bnx2x 10Gb Ethernet ports (Broadcom) | 8 | 8 | 8 | 4 | 4 | ||
| be2net 10Gb Ethernet ports (Emulex) | 8 | 8 | 8 | 4 | 4 | ||
| VMDirectPath PCI/PCIe devices per host | 8 | 8 | 8 | 8 | 8 | ||
| VMDirectPath PCI/PCIe devices per virtual machine | 4 | 4 | 4 | 4 | |||
| Concurrent vMotion operations per host (1Gb/s network) | 4 | 4 | 4 | 2 | 2 | ||
| Concurrent vMotion operations per host (10Gb/s network) | 8 | 8 | 8 |
Storage Maximums
| ESX 5.5 | ESX 5.1 | ESX 5 | ESX 4.1 | ESX 4.0 | ESX 3.5 | ESX 3 | |
| Qlogic 1Gb iSCSI HBA initiator ports per server | 4 | 4 | 4 | 4 | |||
| Broadcom 1Gb iSCSI HBA initiator ports per server | 4 | 4 | 4 | 4 | |||
| Broadcom 10Gb iSCSI HBA initiator ports per server | 4 | 4 | 4 | 4 | |||
| Software iSCSI NICs per server | 8 | 8 | 8 | 8 | |||
| Number of total paths on a server | 1024 | 1024 | 1024 | 1024 | |||
| Number of paths to a iSCSI LUN | 8 | 8 | 8 | 8 | |||
| Qlogic iSCSI: dynamic targets per adapter port | 64 | 64 | 64 | 64 | |||
| Qlogic iSCSI: static targets per adapter port | 62 | 62 | 62 | 62 | |||
| Broadcom 1Gb iSCSI HBA targets per adapter port | 64 | 64 | 64 | 64 | |||
| Broadcom 10Gb iSCSI HBA targets per adapter port | 128 | 128 | 128 | 64 | |||
| Software iSCSI targets | 256 | 256 | 256 | 256 | 256 | ||
| NFS mounts per host | 256 | 256 | 256 | 64 | 64 | ||
| FC LUNs per host | 256 | 256 | 256 | 256 | 256 | 256 | 256 |
| FC LUN ID | 255 | 255 | 255 | 255 | 255 | 255 | 255 |
| FC Number of paths to a LUN | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Number of total paths on a server | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 |
| Number of HBAs of any type | 8 | 8 | 8 | 8 | 8 | ||
| HBA ports | 16 | 16 | 16 | 16 | 16 | 16 | |
| Targets per HBA | 256 | 256 | 256 | 256 | 256 | 15 | |
| Software FCoE adapters | 4 | 4 | 4 | ||||
| Volumes per host | 256 | 256 | 256 | 256 | 256 | 256 | |
| Hosts per volume | 64 | 64 | 64 | 64 | 64 | 32 | |
| Powered on virtual machines per VMFS volume | 2048 | 2048 | 2048 | 256 | |||
| Concurrent vMotion operations per datastore | 128 | 128 | 128 | ||||
| Concurrent Storage vMotion operations per datastore | 8 | 8 | 8 | ||||
| Concurrent Storage vMotion operations per host | 2 | 2 | 2 | ||||
| Concurrent non vMotion provisioning operations per host | 8 | 8 | 8 | ||||
| VMFS Volume size | 64TB | 64TB | 64TB | 64TB | 64TB | 64TB | |
| Virtual disks per datastore cluster | 9000 | ||||||
| Datastores per datastore cluster | 64 | ||||||
| Datastore clusters per vCenter | 256 |
Fault Tolerance Maximums
| ESX 6.0 | ESX 5.5 | ESX 5.1 | ESX 5.0 | |
| Virtual disks | 16 | 16 | 16 | |
| Virtual CPUs per virtual machine | 4 | 1 | 1 | 1 |
| RAM per FT VM | 64GB | 64GB | 64GB | 64GB |
| Virtual machines per host | 4 | 4 | 4 | 4 |
Virtual SAN Maximums
| ESX 5.5 | |
| Virtual SAN disk groups per host | 5 |
| Magnetic disks per disk group | 7 |
| SSD disks per disk group | 1 |
| Spinning disks in all diskgroups per host | 35 |
| Components per Virtual SAN host | 3000 |
| Number of Virtual SAN nodes in a cluster | 32 |
| Number of datastores per cluster | 1 |
| Virtual machines per host | 100 |
| Virtual machines per cluster | 3200 |
| Virtual machine virtual disk size | 2032GB |
| Disk stripes per object | 12 |
| Percentage of flash read cache reservation | 100 |
| Failure to tolerate | 3 |
| Percentage of object space reservation | 100 |
| Virtual SAN networks/physical network fabrics | 2 |
All the information are collected from VMware blogs and articles.
https://www.vmware.com/pdf/vsphere6/r60/vsphere-60-configuration-maximums.pdf
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