Any combination of supported SCSI virtual storage controllers. Four Paravirtual SCSI adapters may be used only if the virtual machine boots from a device attached to an IDE controller, or from the network.
Virtual Machine Maximums
Virtual SCSI targets per virtual SCSI adapter
15
Any combination of disk, CD‐ROM or VMDirectPath SCSI target.
Virtual Machine Maximums
Virtual SCSI targets per virtual machine
60
Virtual Machine Maximums
Disk size
2TB minus 512 bytes
Virtual Machine Maximums
IDE controllers per virtual machine
1
Supports two channels (primary and secondary) each with a master and slave device.
Virtual Machine Maximums
IDE devices per virtual machine
4
Virtual Machine Maximums
Floppy controllers per virtual machine
1
Virtual Machine Maximums
Floppy devices per virtual machine
2
Virtual Machine Maximums
Virtual NICs per virtual machine
10
Virtual Machine Maximums
USB controllers per virtual machine
1
Virtual Machine Maximums
USB devices connected to a virtual machine
20
Virtual Machine Maximums
Parallel ports per virtual machine
3
Virtual Machine Maximums
Serial ports per virtual machine
4
Virtual Machine Maximums
Concurrent remote console connections to a virtual machine
40
ESX Host Maximums Host CPU maximums
Logical CPUs per host
up to 160
vSphere 4.1 supports up to 128, and vSphere 4.1 Update 1 supports up to 160.
ESX Host Maximums Virtual machine maximums
Virtual machines per host
320
ESX Host Maximums Virtual machine maximums
Virtual CPUs per host
512
ESX Host Maximums Virtual machine maximums
Virtual CPUs per core
25
The achievable number of vCPUs per core depends on the workload andspecifics of the hardware. For more information see the latest version ofPerformance Best Practices for VMware vSphere
ESX Host Maximums Fault Tolerance maximums
Virtual disks
16
ESX Host Maximums Fault Tolerance maximums
Virtual CPUs per virtual machine
1
ESX Host Maximums Fault Tolerance maximums
RAM per FT VM (GB)
64
ESX Host Maximums Fault Tolerance maximums
Virtual machines per host
4
ESX Host Maximums Memory Maximums
RAM per host
1TB
ESX Host Maximums Memory Maximums
Maximum RAM allocated to service console
800MB
ESX Host Maximums Memory Maximums
Minimum RAM allocated to service console
272 MB
ESX Host Maximums Memory Maximums
Number of swap files
1 per virtual machine
ESX Host Maximums Memory Maximums
Swap file size
Same as maximum virtual machine RAM 255GB
ESX Host Maximums Storage Maximums iSCSI Physical
LUNs per server
256
ESX Host Maximums Storage Maximums iSCSI Physical
Qlogic 1Gb iSCSI HBA initiator ports per server
4
ESX Host Maximums Storage Maximums iSCSI Physical
Broadcom 1Gb iSCSI HBA initiator ports per server
4
ESX Host Maximums Storage Maximums iSCSI Physical
Broadcom 10Gb iSCSI HBA initiator ports per server
4
ESX Host Maximums Storage Maximums iSCSI Physical
NICs that can be associated or port bound with the software iSCSI stackper server
8
ESX Host Maximums Storage Maximums iSCSI Physical
Number of total paths on a server
1024
ESX Host Maximums Storage Maximums iSCSI Physical
Number of paths to a LUN (software iSCSI and hardware iSCSI)
8
ESX Host Maximums Storage Maximums iSCSI Physical
Qlogic iSCSI: dynamic targets per adapter port
64
ESX Host Maximums Storage Maximums iSCSI Physical
Qlogic iSCSI: static targets per adapter port
62
ESX Host Maximums Storage Maximums iSCSI Physical
Broadcom 1Gb iSCSI HBA targets
64
ESX Host Maximums Storage Maximums iSCSI Physical
Broadcom 10Gb iSCSI HBA targets
64
ESX Host Maximums Storage Maximums iSCSI Physical
Software iSCSI targets
256
The sum of static targets (manually assigned IP addresses) and dynamic targets (IP addressesassigned to discovered targets) may not exceed this number.
ESX Host Maximums Storage Maximums NAS
NFS mounts per host
64
ESX Host Maximums Storage Maximums Fibre Channel
LUNs per host
256
ESX Host Maximums Storage Maximums Fibre Channel
LUN size
2TB minus 512 bytes
ESX Host Maximums Storage Maximums Fibre Channel
LUN ID
255
ESX Host Maximums Storage Maximums Fibre Channel
LUNs concurrently opened by all virtual machines
256
ESX Host Maximums Storage Maximums Fibre Channel
Number of paths to a LUN
32
ESX Host Maximums Storage Maximums Fibre Channel
Number of total paths on a server
1024
ESX Host Maximums Storage Maximums Fibre Channel
Number of HBAs of any type
8
ESX Host Maximums Storage Maximums Fibre Channel
HBA ports
16
ESX Host Maximums Storage Maximums Fibre Channel
Targets per HBA
256
ESX Host Maximums Storage Maximums VMFS
Raw device mapping (RDM) size
2TB minus 512 bytes
ESX Host Maximums Storage Maximums VMFS
Volume size
64TB
ESX Host Maximums Storage Maximums VMFS
Volumes per host
256
ESX Host Maximums Storage Maximums VMFS
Hosts per volume
64
ESX Host Maximums Storage Maximums VMFS-3
Block size
8MB
ESX Host Maximums Storage Maximums VMFS-3
File size (1MB block size)
256GB
ESX Host Maximums Storage Maximums VMFS-3
File size (2MB block size)
512GB
ESX Host Maximums Storage Maximums VMFS-3
File size (4MB block size)
1TB
ESX Host Maximums Storage Maximums VMFS-3
File size (8MB block size)
2TB minus 512 bytes
ESX Host Maximums Storage Maximums VMFS-3
Files per volume
Approximately 30,720
Networking Maximums Physical NICs
e1000 1GB Ethernet ports (Intel PCI‐x)
32
Networking Maximums Physical NICs
e1000e 1GB Ethernet ports (Intel PCI‐e)
24
Networking Maximums Physical NICs
igb 1GB Ethernet ports (Intel)
16
Networking Maximums Physical NICs
tg3 1GB Ethernet ports (Broadcom)
32
Networking Maximums Physical NICs
bnx2 1GB Ethernet ports (Broadcom)
16
Recommended number of ports for bnx2 when in MSI‐X mode and jumbo configuration is 6.
This value takes precedence over recommendations in KB 1020808 for this configuration.
Networking Maximums Physical NICs
forcedeth 1GB Ethernet ports (NVIDIA)
2
Networking Maximums Physical NICs
s2io 10GB Ethernet ports (Neterion)
4
Networking Maximums Physical NICs
nx_nic 10GB Ethernet ports (NetXen)
4
Networking Maximums Physical NICs
ixgbe Oplin 10GB Ethernet ports (Intel)
4
Networking Maximums Physical NICs
bnx2x 10GB Ethernet ports (Broadcom)
4
Networking Maximums Physical NICs
Infiniband ports (refer to VMware Community Support)
N/A
Mellanox Technologies InfiniBand HCA device drivers are available directly from Mellanox
Technologies. Refer to Mellanox for support status of InfiniBand HCAs with
ESX. http://www.mellanox.com
Networking Maximums VMDirectPath limits
VMDirectPath PCI/PCIe devices per host
8
Networking Maximums VMDirectPath limits
VMDirectPath PCI/PCIe devices per virtual machine
4
A virtual machine can support 6 devices, if 2 of them are Teradici devices.
Networking Maximums VMDirectPath limits
Total virtual network switch ports per host (vDS and vSS ports)
4096
Networking Maximums vNetwork Standard and Distributed Switch
Maximum ACTIVE ports per host (vDS and VSS)
1016
Networking Maximums vNetwork Standard and Distributed Switch
Virtual network switch creation ports per standard switch
4088
Networking Maximums vNetwork Standard and Distributed Switch
Port groups per standard switch
512
Networking Maximums vNetwork Standard and Distributed Switch
Static or Dynamic Port groups per distributed switch
5000
Networking Maximums vNetwork Standard and Distributed Switch
Ephemeral Port groups per distributed switch
1016
Networking Maximums vNetwork Standard and Distributed Switch
Ports per distributed switch
20000
Networking Maximums vNetwork Standard and Distributed Switch
Distributed virtual network switch ports per vCenter
20000
Networking Maximums vNetwork Standard and Distributed Switch
Static or Dynamic Port groups per vCenter
5000
Networking Maximums vNetwork Standard and Distributed Switch
Ephemeral Port groups per vCenter
1016
Networking Maximums vNetwork Standard and Distributed Switch
Distributed switches per vCenter
32
Networking Maximums vNetwork Standard and Distributed Switch
Distributed switches per Host
16
Networking Maximums vNetwork Standard and Distributed Switch
Hosts per distributed switch
350
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Hosts per cluster
32
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Virtual machines per cluster
3000
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Virtual machines per host
320
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Maximum concurrent host HA failover
4
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Failover as percentage of cluster
50%
Resource Pool and Cluster Maximums Cluster (all clusters including HA and DRS)
Resource pools per cluster
512
Resource Pool and Cluster Maximums Resource Pool
Resource pool tree depth
8
Additional 4 resource pools are used by system internals
Resource Pool and Cluster Maximums Resource Pool
Resource pools per host
4096
Resource Pool and Cluster Maximums Resource Pool
Children per resource pool
1024
vCenter Server Maximums vCenter Server Scalability
Hosts per vCenter Server
1000
vCenter Server Maximums vCenter Server Scalability
Powered on virtual machines per vCenter Server
10000
vCenter Server Maximums vCenter Server Scalability
Registered virtual machines per vCenter Server
15000
vCenter Server Maximums vCenter Server Scalability
Linked vCenter Servers
10
vCenter Server Maximums vCenter Server Scalability
Hosts in linked vCenter Servers
3000
vCenter Server Maximums vCenter Server Scalability
Powered on virtual machine in linked vCenter Servers
30000
vCenter Server Maximums vCenter Server Scalability
Registered virtual machine in linked vCenter Servers
50000
vCenter Server Maximums vCenter Server Scalability
Concurrent vSphere Clients
100
vCenter Server Maximums vCenter Server Scalability
Number of host per datacenter
400
vCenter Server Maximums Concurrent Operations
Concurrent provisioning operations per host
4
vCenter Server Maximums Concurrent Operations
Concurrent provisioning operations per datastore
4
vCenter Server Maximums Concurrent Operations
Concurrent vMotion operations per host (1Gb/s network)
4
Concurrent vMotion operation is currently supported only when source and destination
hosts are in the same cluster.
vCenter Server Maximums Concurrent Operations
Concurrent vMotion operations per host (10Gb/s network)
8
Concurrent vMotion operation is currently supported only when source and destination
hosts are in the same cluster.
vCenter Server Maximums Concurrent Operations
Concurrent vMotion operations per VMFS3 datastore
128
vCenter Server Maximums Concurrent Operations
Concurrent Storage vMotion operations per host
2
vCenter Server Maximums Concurrent Operations
Concurrent Storage vMotion operations per datastore