System limits

This document lists the system limits that apply to Google Distributed Cloud (GDC) air-gapped. System limits are fixed values that cannot be changed.

System limits are applicable to all audience groups, and must be understood by each operator, platform administrator, and application developer to successfully use GDC. For more information, see Audiences for GDC air-gapped documentation.

System limits

The following tables list the system limits that apply to components of GDC, and the value for each system limit.

Database

System limit Value Notes
Maximum number of database clusters per organization 153
Maximum number of Postgres connections per database cluster 6000 The number of maximum connections is highly dependent on workload, database CPU, and memory. When using up to 6000 connections, we recommend 64 vCPU and 1 TB of RAM, though lower CPU and RAM settings might work depending on the workload.
Maximum storage size per database 2 TB

Managed Harbor Service

System limit Value Notes
Maximum Harbor registry instances per organization 5
Maximum Harbor registry instances per project 1
Maximum Harbor registry image layer size 128 GB
Maximum Harbor registry storage size 1 TB This storage limit might vary depending on the total storage available in object storage.
Maximum concurrent requests 30 The artifact sizes vary from 1 KB to 1 GB.

Multi-zone

System limit Value Notes
Maximum number of zones per universe 6
Maximum number of zones per region 6

Resource Manager

System limit Value Notes
Maximum project name size 30 characters A minimum of four characters must be used for the project name. A project name can contain letters, numbers, single quotes, hyphens, spaces, or exclamation points. For more information, see Project identifiers.
Maximum project ID size 30 characters A minimum of six characters must be used for the project ID. A project ID can contain lowercase letters, numbers, and hyphens. For more information, see Project identifiers.
Maximum number of organizations per zone 10
Maximum number of projects per organization 100
Minimum physical servers per customer organization per zone 6 physical servers The physical server number contains three control plane servers and three worker servers.