Welcome to the fourth annual CERN Tape Archive Workshop (CTA 2025).
The LHC experiments have completed another successful year of data taking, with new records in terms of throughput and total data archived. This presentation introduces the CTA Project, Team and Community, as well as an overview of the challenges and achievements during the third year of LHC Run-3.
With LHC now in the middle of Run 3, we will present our current tape hardware setup and present our experience with the different components of the technology.
We will start with a reflection on the evolution of our capacity planning vs. increasing storage requirements of the experiments.
We will then report on performance characteristics of both LTO9 and TS1170 tape drives: RAO,...
For six years Scaleway offered S3 Glacier-class storage fully operated on mostly powered-off SMR disks.
This enabled us to offer our customers fast restore time while remaining cost effective, using a mix of commodity and custom hardware.
As our S3 service grew, and since we cannot control nor predict public cloud workloads, the former glacier stack was unable to keep up while becoming...
S3 is a popular protocol for object storage, in use at CERN since 2018. CERN's Ceph S3 service provides a disk storage back-end for various use cases including backup. In principle it is possible to archive S3 objects to tape using the S3 GLACIER storage class extensions. However, this is not yet supported in an open source solution. This talk gives a brief overview of the landscape of support...
