Hi jcofin13,
Thank you for sharing the case numbers and for the detailed write up.
I'll go through your questions one by one, then a bit more commentary:
1. Debug logs are always safe to delete, just means it might be difficult to troubleshoot some issues if the corresponding logs have been cleared. In this case, if it's really the S3 "Slow down" response filling the logs, it's fine to delete the older ones
2. Likely yes, but without a review of the debug logs and the environment will be difficult to give a more assertive answer (see below commentary)
3. Potentially can help, yes. This config parameter changes the number of concurrent HTTP requests made during S3 operations; however, it works in conjunction with the total concurrent tasks allowed for the repository (a concurrent task can have up to (S3ConcurrentTaskLimit) HTTP connections at once, so if you have 10 tasks and S3ConcurrentTaskLimit is set to 10, potentially 100 concurrent HTTP requests)
4. Depends on the environment -- if you have many S3 repositories and a lot of jobs using them, potentially, but at first blush this seems a bit high
5. Can you be more specific on this one? You mean the log folder size or the S3 "SlowDown" responses? For the latter, Veeam utilizes an exponential 'back-off' mechanism whenever an S3 system returns a SlowDown response; during these periods, Veeam slows the number of requests
As for the issue itself, as alluded to above, while the config parameter may assist here, depending on how heavily S3 is being utilized there may be other places to check.
I would advise continue with Support and push for a closer review of the behavior here (e.g., does it occur only during deletes, only during specific time periods, etc) -- if it's really about Checkpoint removal then there may be other options to adjust, but best to wait for Support's review.
If there are concerns on the handling of the case, please use the Talk to a Manager button in the case portal; this will connect you with Support Management and they will review the case and allocate additional resources if necessary.
Thank you for sharing the case numbers and for the detailed write up.
I'll go through your questions one by one, then a bit more commentary:
1. Debug logs are always safe to delete, just means it might be difficult to troubleshoot some issues if the corresponding logs have been cleared. In this case, if it's really the S3 "Slow down" response filling the logs, it's fine to delete the older ones
2. Likely yes, but without a review of the debug logs and the environment will be difficult to give a more assertive answer (see below commentary)
3. Potentially can help, yes. This config parameter changes the number of concurrent HTTP requests made during S3 operations; however, it works in conjunction with the total concurrent tasks allowed for the repository (a concurrent task can have up to (S3ConcurrentTaskLimit) HTTP connections at once, so if you have 10 tasks and S3ConcurrentTaskLimit is set to 10, potentially 100 concurrent HTTP requests)
4. Depends on the environment -- if you have many S3 repositories and a lot of jobs using them, potentially, but at first blush this seems a bit high
5. Can you be more specific on this one? You mean the log folder size or the S3 "SlowDown" responses? For the latter, Veeam utilizes an exponential 'back-off' mechanism whenever an S3 system returns a SlowDown response; during these periods, Veeam slows the number of requests
As for the issue itself, as alluded to above, while the config parameter may assist here, depending on how heavily S3 is being utilized there may be other places to check.
I would advise continue with Support and push for a closer review of the behavior here (e.g., does it occur only during deletes, only during specific time periods, etc) -- if it's really about Checkpoint removal then there may be other options to adjust, but best to wait for Support's review.
If there are concerns on the handling of the case, please use the Talk to a Manager button in the case portal; this will connect you with Support Management and they will review the case and allocate additional resources if necessary.
Statistics: Posted by david.domask — Oct 10, 2025 10:52 am
