Limitations and restrictions - Amazon Simple Storage Service
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Limitations and restrictions

Note

Amazon S3 Vectors is in preview release for Amazon Simple Storage Service and is subject to change.

Amazon S3 Vectors has certain limitations and restrictions that you should be aware of when planning your vector storage and search applications.

  • Vector buckets per Amazon Region in an account: 10,000

  • Vector indexes per vector bucket: 10,000

  • Vectors per vector index: Up to 50 million

  • Dimension value per vector: 1 to 4,096

  • Total metadata per vector: Up to 40 KB (filterable + non-filterable)

  • Total metadata keys per vector: Up to 10

  • Filterable metadata per vector: Up to 2 KB

  • Non-filterable metadata keys per vector index: Up to 10

  • Write requests per second per vector index: Up to 5

  • Request payload size: Up to 20 MiB

  • Vectors per PutVectors API call: Up to 500

  • Vectors per DeleteVectors API call: Up to 500

  • Vectors per GetVectors API call: Up to 100

  • Top-K results per QueryVectors request: Up to 30

  • Vectors listed per page in a ListVectors response: Up to 1,000

  • Vector buckets listed per page in a ListVectorBuckets response: Up to 500.

  • Vector indexes listed per page in a ListIndexes response: Up to 500.

  • Segment count for parallel listing: Up to 16

If you require higher limits, contact your Amazon account team.