Copy job does not finish to wasabi immutable bucket

[spalmer]

Hello, We have a 365 job that backs up 3000+ mailboxes to wasabi, that runs well and takes just around 6 hours at this point... then we have a copy job that copies from the regular wasabi bucket to another wasabi immutable storage bucket (same subscription)
that seems to take forever and often does not finish, I usually cancel it after 20+ days... I can't figure it out... shouldn't this be faster than the original backup job? (since it is wasabi to wasabi)
Veeam Support - Case # 07271908

[Polina]

Hi Sheridan,

Typically backup copies do not take more time than the backup itself.

I see that your support case is already closed because there was no response from you for quite a while. Please reopen the case and upload the fresh logs to let our engineers continue troubleshooting.

Thanks!