Limits and quotas

modules/ROOT/content-nav.adoc

@@ -6,6 +6,7 @@ Generic Start
 * Introduction
 ** xref:index.adoc[About Aura]
 ** xref:visual-tour/index.adoc[Visual tour]
+** xref:products-tiers-and-limits.adoc[Products, tiers and limits]
 
 * Quick start
 ** xref:getting-started/create-account.adoc[Create an account]

modules/ROOT/pages/products-tiers-and-limits.adoc

@@ -0,0 +1,203 @@
+= Neo4j AuraDB Limits and Quotas
+
+This document provides a comprehensive overview of the system limits, quotas, operational constraints and defaults for Neo4j AuraDB across its different service tiers. 
+These limits are in place to ensure the stability, performance, and security of the managed service.
+
+== Service Tiers Overview
+
+AuraDB is offered in four distinct tiers, each designed for different use cases, from learning and development to mission-critical enterprise applications.
+
+* *AuraDB Free:* A perpetual free tier for learning, prototyping, and small projects.
+* *AuraDB Professional:* A scalable, pay-as-you-go tier for production-ready applications.
+* *AuraDB Business Critical:* A highly available, multi-node cluster for mission-critical workloads requiring a 99.95% uptime SLA.
+* *AuraDB Virtual Dedicated Cloud (VDC):* A single-tenant, dedicated environment offering maximum security, isolation, and customizable configurations.
+
+== Graph Size & Instance Limits
+
+These limits define the scale of a single AuraDB instance based on its tier and configured size.
+
+[cols="2,2,2,3",options="header"]
+|===
+| Limit
+| AuraDB Free
+| AuraDB Professional
+| AuraDB Business Critical / AuraDB VDC
+
+| Nodes
+| 200,000
+| Millions of nodes and relationships
+| Billions of nodes and relationships
+
+| Relationships
+| 400,000
+| Millions of nodes and relationships
+| Billions of nodes and relationships
+
+| Memory (RAM)
+| N/A
+| 1 GB  -  128 GB
+| 2 GB  -  1,952 GB* (GCP)
+
+2 GB  -  512 GB (AWS & Azure)
+
+| Storage
+| 1 GB
+| 2 GB  -  2,048 GB
+| 4 GB  -  5,120 GB (AWS & GCP)
+
+4 GB  -  2,048 GB (Azure)
+
+| RAM/Disk ratio
+| N/A
+2+^| Up to 1:16 max
+
+|===
+
+_*Larger GCP instances from 744GB RAM are available on request_
+
+== Query, Connection and Transaction Limits
+
+These limits govern the execution of Cypher queries to ensure database stability. 
+
+[cols="2,2",options="header"]
+|===
+| Transaction Limits | Default Value
+
+| Max Concurrent Transactions
+| 1,000
+
+|===
+
+[cols="2,2",options="header"]
+|===
+| Page Cache Limits | Default Value
+
+| Query Cache Size
+| 51
+
+| Additional page cache warmup after restart
+| False
+
+
+| Page cache warmup profile interval
+| 1 minute
+
+| Checkpoint IOPS limit
+| 600
+
+|===
+
+[cols="2,2",options="header"]
+|===
+| Max Transaction Memory Size Limits
+| Default Value
+
+| 1GB RAM instance
+| 200 MB
+
+| 2 GB RAM instance
+| 275 MB
+
+| 4 GB RAM instance
+| 1,597 MB
+
+| 8 GB RAM instance
+| 2,654 MB
+
+| 16 GB RAM instance
+| 4,154 MB
+
+| 24 GB RAM instance
+| 7,699 MB
+
+| 32 GB RAM instance
+| 11,244 MB
+
+| 48 GB RAM instance
+| 16,876 MB
+
+| 64 GB RAM instance
+| 22,508 MB
+
+| 128 GB  -  2 TB RAM instance
+| 28,508 MB
+|===
+
+== Data Import Limits
+
+These limits apply when loading data into AuraDB or performing administrative actions.
+
+[cols="2,2",options="header"]
+|===
+| Limit | Value
+
+| Restore from file on Aura Console
+| 4GB
+|===
+
+== Features, Backups, and SLAs
+
+This table compares key operational features and service level agreements across the tiers.
+
+[cols="1,1,1,1,1",options="header"]
+|===
+| Feature 
+| AuraDB Free 
+| AuraDB Professional 
+| AuraDB Business Critical 
+| AuraDB VDC
+
+| Uptime SLA
+| None
+| None
+| 99.95%
+| 99.95%
+
+| Backup Frequency
+| On-demand
+| Daily
+| Daily & Hourly
+| Hourly
+
+| Backup Retention
+| 1 backup at a time
+| 7 days
+| 30 days
+| 60 - 90 days
+
+| IP Filtering
+| None
+| None
+| 20 IP Ranges
+| 100 IP Ranges
+
+| Architecture
+| Zonal Database
+| Zonal Instance
+| Regional Cluster
+| Regional Cluster with Dedicated VPC
+|===
+
+== Aura Trial Limits
+
+These limits apply to Aura credit-based trials.
+
+[cols="2,2",options="header"]
+|===
+| Limit | Value
+
+|Max number of non-free-tier active instances
+|2
+
+|Max instance size
+|4GB
+
+|Aura Graph Analytics - Max session size
+|8GB
+
+|Aura Graph Analytics - Max concurrent number of sessions
+|3
+
+|Aura Agent - Max number of external agents
+|1
+|===