Thanks. I did some calculations and, even though I do not expect your tape drive was running all the time on the average 145 MB/s, according to the rough estimate the processing of this huge W2008R2-FILE… should be finished in ~15 hours . So it’s either the statistics or performance is not displayed correctly.
I might be wrong and that’s why I am asking you to open a support case, so we could check the actual logs. Don’t forget to share the case ID please so I could forward it directly to QA team. Cheers!