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Status Submitted
Workspace Sterling Connect:Direct
Categories Performance
Created by Guest
Created on Jan 7, 2026

RELATED IDEAS

Request for Multi‑Endpoint / Automatic Failover Support for S3 IO Exit in Connect:Direct

During multiple production runs, we observed intermittent S3 transfer failures in Connect:Direct. The failures are inconsistent, and not all transfers are affected. Our internal teams (SRE, Storage/S3, and Network) are continuing deeper analysis, but initial evidence points to a lack of response from the S3 endpoint for approximately one minute during certain intervals.

We currently configure Connect:Direct’s S3 IO Exit to use a single s3.endpointUrl, which points to a load balancer. We suspect the load balancer may be contributing to the connection drops. As part of troubleshooting, we plan to test using direct IPs instead of the LB.

This raised a critical question:
Does Connect:Direct support defining multiple S3 endpoints (Primary + Secondary) so that CD can automatically fail over when the primary endpoint is unresponsive?

What is your industry? Financial Markets
How will this idea be used?

This enhancement is critical for the following reasons:

  • Intermittent failures occur when the S3 endpoint (or load balancer in front of it) does not respond.

  • Without endpoint failover, Connect:Direct fails the entire transfer instead of retrying with a secondary endpoint.

  • High‑volume environments (like ours) require resilience and redundancy to avoid disruptions.

  • Manual updates to initparm.cfg during outages are operationally risky and not feasible.

  • Other CD components (e.g., Netmap) already support primary/alternate communication parameters; extending similar capability to the S3 IO Exit would significantly improve reliability.

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