Failing SAM tests for data access via CEs reported last week turned out to be a problem with ETF, suffered by many ARC-CE sites for CMS. SAM tests generally green since the fix on Thursday. 

Production jobs: some big spikes in running cores in the last week, but performance remains good.

A few tape write failures to investigate. 

Issue with /store/unmerged/ on Echo not being cleaned up for all files: CMS keeps files that require merging via Merge jobs in this 'directory'. These files are not managed by Rucio. We run Cleanup jobs, which delete unmerged files and typically work well at RAL. However, some files remain, and CMS has a mechanism to delete these after a certain period and after checking those files are no longer needed. This uses ls of directories and does not work on Echo. The test is always green though! Files have built up over the years - we can delete the majority of them. We are considering a long-term solution. 

DC27: 50% of HL-LHC challenge. Proposed for last week of Feb and first week of March. 

CMS were testing FTS4 last week and continue this week, working closely with the FTS team. Generally successful so far, found a few things to fix or that hadn't been fully developed yet. Need to keep up the pressure to make sure it is production-ready in the autumn. 

Pledges: All looks up to date for CMS, tape pledge was given early; CPU pledge appears not to have increased. (pledges are here: https://indico.cern.ch/event/1598195/contributions/6736058/attachments/3197677/5692007/tier1expts2026-v1.pdf)