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

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

Floating IPs per Region

1

Security groups per Region

450

VLAN ID range per physical network

-

VXLAN / Geneve tunnel endpoints per Region

591

Layer 2 Networks

Criteria
Value

Layer 2 networks per Region

14

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

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