Antares is the tape archive service at RAL that manages both Tier-1 and local Facilities data. In this talk, we present the main developments in the service since last year’s CTA workshop including the migration of CASTOR Facilities instance and discuss the service’s performance as well as the main operational issues since the beginning of LHC Run-3. Finally, we provide an overview of the...
CTA has been in production at DESY for almost an year, with dCache as the frontend. Over the course of this time we have migrated all our data from OSM, moved all experiments to CTA and so far written close to 25PB of data. In this talk we give an overview of the past year and share our overall experience with CTA.
The presentation will provide an overview of the status and progress of CTA at IHEP. Last year, we completed the data migration from CASTOR to CTA, added new CTA instances for JUNO, HEPS, and LHCb Tier1. We compiled CTA 5.8.10 on alma9 and have commenced performance testing. Additionally, CTA has been utilized on the new tape library and LTO9 tapes.
At the 2nd CTA Workshop (2023), we announced a repository of Free and Open Source operator tools for CTA, including the Repack automation system (ATRESYS) tool. Since then, the repository has seen a number of new tool additions, as well as changes to the underlying libraries.
In this talk, we will introduce these new features, including tools for: automating the supply of tapes to tape...
The Tape Alerting System (TAS) acts automatically on issues detected in the tape infrastructure by disabling the affected elements, notifying operators of the situation requiring their attention, and thereby protecting the system from further disruption or damage to the infrastructure.
This is done by performing a scan of a configurable time frame of past tape sessions and then executing a...
During three years in production at CERN as the WLCG Tier-0 tape storage service, the CTA software has evolved and gained various features driven by the service requirements. Discussions between developers and the operations have led to design choices that shaped the service and helped refine CTA operations best practices.
This presentations aims at clarifying the current operations and...
This presentation will aim to provide a yearly site report. This year at AARNet, we implemented tape limiting and offsite tape vaulting processes and workflows. CTA was also an integral part of decommissioning efforts of some of our storage platforms.
In 2024, Fermilab will replace the legacy Enstore tape management system with CTA for CMS data. This will be followed by the migration of the second instance of Enstore containing all other scientific data on tape at Fermilab.
We will detail the results of on-going scale tests of CTA. These tests target the 10% scale in tape bandwidth compared to the existing CMS Enstore instance. Tests...
Throughout 2023, we have continued conducting operational tests to familiarize ourselves with the functionality of CTA and understand the differences from Enstore. In addition to configuration tests of the application to observe how resource allocation works or to configure automatic tape provisioning, efforts have been made to deploy a centralized logging system to enhance the monitoring and...
This
presentation summarizes the current state of tape storage systems at
the Joint Institute for Nuclear Research (JINR) and gives our current
vision of its future in response to the discontinuation of Enstore
support. We provide a brief description of two of our currently
operating tape systems: a 90 PB instance built on dCache/Enstore and
an 11 PB instance based by EOS/CTA....
This paper presents one of the possible architectures for a container-based CTA installation designed for a midsize storage system. The primary objective of this setup is to store archive data efficiently and integrate it with an existing computing cluster.
The configuration of the CTA tape daemon was inherited from CASTOR, which relied on a manual process to create and store the configuration for each tape drive. As the scale of CERN's tape operations have grown to hundreds of drives, this approach has not scaled well. The CTA team have therefore developed a new semi-automated process to determine the configuration of each drive. The...
