Thanks Janne, I will hand that to the customer.
Look at https://community.veeam.com/blogs-and-podcasts-57/sobr-veeam -capacity-tier-calculations-and-considerations-in-v11-2548 for "extra large blocks" to make them 8M at least. We had one Veeam installation vomit millions of files onto our rgw-S3 at an average size of 180k per object, and at those sizes, you will see very poor throughput and the many objs/MB will hurt all other kinds of performance like listing the bucket and so on.
@joachim What do you mean with "default region"? I just checked the period and it aligns. I've told them to try to get more information from it "bucket does not exist" or "permission denied".
Had received similar error messages with another client program. The default region did not match the region of the cluster.
-- Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im groüen Saal.