SIG Quality of Service
Objective
The purpose of this SIG is to allow a RSE handle in an automatic manner storage with two different qualitiy of services based on access latency. Initial work in this area differentiates between disk and tape within the same RSE. New data files are initially pinned on disk either for the lifetime of the rule or up to the maximum set by the storage site. After the pin expires the local storage system is free to stage the file to tape for further access. When Rucio needs to access such files again, the bring on line command is given to the RSE and the file is transferred from tape to disk if needed. Currently this is being tested with dCache. In the future, it can be extended to other storage systems where appropriate. At the end of this SIG a report will be written documenting the outcome/benefit of this activity.
Expected End-Date
September 30, 2023
End of 2023
Means to achieve the objective
- Mattermost channel: #QoS
- eMail list: rucio-sig-qos@cern.ch
- biweekly meetings with interested communities either over Zoom or asynchronously over Mattermost.