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Quota management in dCache or making a perfectly normal file system normal

Authors :
Litvintsev Dmitry
Krishnaveni Chitrapu
Meyer Svenja
Millar Paul
Mkrtchyan Tigran
Morschel Lea
Rossi Albert
Sahakyan Marina
Source :
EPJ Web of Conferences, Vol 295, p 01050 (2024)
Publication Year :
2024
Publisher :
EDP Sciences, 2024.

Abstract

dCache (https://dcache.org) is a highly scalable storage system providing location-independent access to data. The data are stored across multiple data servers as complete files presented to the end-user via a single-rooted namespace. From its inception, dCache has been designed as a caching disk buffer to a tertiary tape storage system with the assumption that the latter has virtually unlimited capacity. dCache can also be configured as a disk-only storage system with no tape backend. Owing to the idea that a tape resource is infinite, or purely physically limited by budget considerations, the system has never provided for any restrictions on how much data can be stored on tape. Likewise, in the disk-only configuration, the capacity of the system is only limited by the aggregate disk capacity of the data servers. In a multi-user environment, however, this has become problematic. This presentation will describe the design and implementation of a user-and group-based quota system, that allows to manage tape and disk space allocations, as part of dCache namespace.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
2100014X
Volume :
295
Database :
Directory of Open Access Journals
Journal :
EPJ Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.083f136a8a3e4ac29c56d03fe98640d6
Document Type :
article
Full Text :
https://doi.org/10.1051/epjconf/202429501050