S3 Express API

Get ultra-low latency object storage for performance-critical workloads. AIStor's S3 Express mode eliminates checksum overhead, enables atomic appends, and optimizes LIST operations—all with a simple mode switch, no architecture changes required.

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Gauge displaying Ultra-Fast IOPS with three features below: AppendObject Operations, Zero MD5 Overhead, and Unsorted LIST.

S3 Express Capabilities

AWS S3 Express One Zone API compatibility for on-premises deployment with full data sovereignty.

Atomic Append Operations

AppendObject API enables sequential writes with offset-based locking—no multipart complexity for log aggregation and streaming ingestion.

UUID-Based ETags

Skip MD5 checksum computation on uploads. Cryptographically random ETags deliver faster PUT throughput while maintaining unique object identification.

Unsorted LIST Operations

Directory buckets return objects without lexicographic sorting, improving throughput for AI training workflows scanning millions of objects.

Sequential Multipart Uploads

Parts must complete in order (1, 2, 3...N) with no gaps—simpler tracking and reduced metadata overhead for large object assembly.

Why AIStor is Different

AWS S3 Express requires special directory bucket types, session-based authentication, and architectural changes to access low-latency performance. Organizations wanting Express-level speed on-premises face a gap—until now. AIStor brings S3 Express capabilities to any deployment with a single flag.

One Mode Switch

Enable S3 Express deployment-wide—no special bucket types or configuration complexity.

Zero Extra Auth Steps

Use existing IAM and STS credentials without AWS's session-based authentication overhead.

Full Erasure Coding

Preserve healing, replication, and data protection while gaining Express performance.

Instant Rollback Option

Switch between S3 and S3 Express modes with identical IAM policies and zero app changes.

Business Impact

AI/ML Training Acceleration

Unsorted LIST and AppendObject enable faster data enumeration and checkpointing for distributed training.

Simplified Log Aggregation

AppendObject replaces multipart uploads, reducing API calls for high-volume telemetry ingestion.

Faster Analytics Ingest

MD5-free PUTs and unsorted LIST boost throughput for real-time data lake pipelines.

Zero-Risk Testing

Mode switching enables instant S3 vs. S3 Express comparison with identical policies.

Lower Client CPU Usage

UUID-based ETags remove client-side MD5 hashing, streamlining uploads and freeing compute.

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Additional Resources

Blog

AIStor Adds Support for the S3 Express API

MinIO AIStor now offers support for Amazon’s S3 Express API, a streamlined version of the general-purpose S3 API.

Docs

S3 Express Mode

Documentation for enabling AIStor to run in S3 Express mode.

Training

MinIO Academy

Access training, documentation, and hands-on resources in one place with role specific content for administrators, developers, data engineers, and partners.