Configuration Maximums

This page lists the configuration limits Platform9 has validated for Private Cloud Director (PCD). Stay at or below these values to ensure full Platform9 support.

These are tested limits, not the architectural maximums of the underlying components. The individual components often support higher values. If your requirements exceed the published values, contact Platform9 support for guidance.

Actual achievable limits depend on hardware selection, workload characteristics, and network topology, and it may not be possible to hit every maximum simultaneously. Consult the individual subsystem sections (compute, network, storage) when sizing your environment. To scale beyond the per-Region maximums, deploy multiple Regions.

Virtual Machine Maximums

Limits that apply to a single VM running on PCD.

Storage

Criteria	Value
Virtual disks per VM (root + attached volumes)	8
Boot volume size	4TB
Ephemeral disk size	No hard maximums exist

Networking

Criteria	Value
Security groups per port	10
Security group rules per security group	100
Floating IPs per VM	50

Hypervisor Host Maximums

Limits that apply to a single PCD hypervisor host.

Host Compute

Criteria	Value
Maximum vCPU oversubscription ratio	16×
Maximum RAM oversubscription ratio	~1.5×

Region Maximums

Limits that apply to a single PCD Region (the management plane controlling a set of hypervisors). Customers requiring scale beyond these values should plan for multiple Regions.

Criteria	Value
Clusters per Region	8
Hypervisors per Region	591 active; 629 total registered
VMs per Region	9,673 powered on VMs
Tenants per Region	74
Users per Region	136
Host Aggregates per Region	9
Flavors per Region	15
Images per Region	7
Concurrent VM create operations per Region	50
Concurrent VM migrate operations per Region	5

High Availability (VM HA) and DRR Maximums

Limits that apply to PCD VM HA clusters.

Criteria	Value
Hypervisors per cluster	100
Failure domains per cluster	2
Failure domains per host	1
Failure domains per VM (soft affinity)	1

Networking Maximums

Limits that apply to the software-defined networking layer.

Networks and Subnets

Criteria	Value
Tenant networks per Region	14
Subnets per Region	13
Subnets per network	100
Ports per Region	19,992
Ports per network	10,000

Addressing and Isolation

Criteria	Value
Security groups per Region	450
VLAN ID range per physical network	-
VXLAN / Geneve tunnel endpoints per Region	591

Layer 2 Networks

Criteria	Value
Ports per Layer 2 network	500

Block Storage Maximums

Limits that apply to the block storage service.

Criteria	Value
Volumes per Region	10,000
Volumes per tenant	10,000
Backends per Region	6
Volume types per Region	6

Tenant Maximums

Default quotas applied to each tenant.

Criteria	Value
VMs per tenant	10,000
vCPUs per tenant	10,000
RAM per tenant	8,000 GB
Volumes per tenant	10,000
Volume storage per tenant	10,000 GB
Networks per tenant	100
Routers per tenant	10
Floating IPs per tenant	50
Security groups per tenant	500
Key pairs per user	100