Antares tests in yellow warning mode was 'fixed' at the test end by tweaking the evaluation of the test, to make it more appropriate for sites with low numbers of links (such as RAL and CERN tapes). Has been green since. 

Busy period writing to tape. 

Another period of low efficiency CMS jobs doing mostly I/O only. Many T1s see the same. Job failure rate was fine. 

Some issues with other sites reading data from Echo using AAA. Reading jobs were timing out because they couldn't get hold of data at RAL; Jyothish (again) increased the throttling level to allow more connections...but this time it seems too many for Echo to easily process. Remember that CMS jobs are likely making small, sparse reads. The IOPS went up higher than we are comfortable with. There is an associated ticket. https://helpdesk.ggus.eu/#ticket/zoom/2837