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AWS Directory Service
Administration Guide (Version 1.0)

AWS Directory Service Limits

The following are the default limits for AWS Directory Service. Each limit is per region unless otherwise noted.

Amazon Cloud Directory

Schema and Directory Limits

Limit/Concept Quantity
Number of attributes per facet (including required) 1000
Number of facets per object 5
Number of unique indexes an object is attached 3
Number of facets per schema 30
Number of rules per attribute 5
Number of attributes with default values per facet 10
Number of required attributes per facet 30
Number of development schemas 20
Number of published schemas 20
Number of applied schemas 5
Number of directories 100
Max page elements 30
Max input size (all inputs combined) 200 KB
Max response size (all outputs combined) 1 MB
Schema JSON file size limit 200 KB
Facet name length 64 UTF-8 encoded bytes
Directory name length 64 UTF-8 encoded bytes
Schema name length 64 UTF-8 encoded bytes

Object Limits

Limit/Concept Quantity
Number of written objects 20 per API call
Number of read objects 200 per API call
Number of written attribute values 1000 per API call
Number of read attribute values 1000 per API call
Path depth 15
Max objects in a single page 30
Max input size (all inputs combined) 200 KB
Max response size (all outputs combined) 1 MB
Policy size limit 10 KB
Edge or link name length 64 UTF-8 encoded bytes
Value length for indexed attributes 64 UTF-8 encoded bytes
Value length for non-indexed attributes 2KB
Number of policies attached to an object 4

Limits on batch operations

There are no limits on the number of operations you can call inside a batch. For more information, see Limits on Batch operations.

Limits that cannot be modified

Amazon Cloud Directory limits that cannot be changed or increased, include:

  • Facet name length

  • Directory name length

  • Schema name length

  • Max page elements

  • Edge or link name length

  • Value length for indexed attributes

AWS Directory Service for Microsoft Active Directory

AWS Directory Service Limits

Resource Default Limit
Microsoft AD directories 10
Manual snapshots 5 per Microsoft AD

AD Connector

AWS Directory Service Limits

Resource Default Limit
AD Connector directories 10

Increase Your Limit

Perform the following steps to increase your limit for a region.

To request a limit increase for a region

  1. Go to the AWS Support Center page, sign in, if necessary, and click Open a new case.

  2. Under Regarding, select Service Limit Increase.

  3. Under Limit Type, select AWS Directory Service.

  4. Fill in all of the necessary fields in the form and click the button at the bottom of the page for your desired method of contact.