Database Reference
In-Depth Information
Chapter 3
Dynamic Storage Management
Arie Shoshani,
1
Flavia Donno,
2
Junmin Gu,
1
Jason Hick,
1
Maarten Litmaath,
2
and Alex Sim
1
1
Lawrence Berkeley National Laboratory
2
European Organization for Nuclear Research (CERN), Switzerland
Contents
3.1
Introduction and Motivation
..........................................
74
3.2
Support for Mass Storage Systems
...................................
77
3.2.1
Management of Files in Today's Mass Storage Systems
......
77
3.2.2
Making Mass Storage Systems Available
through SRM Interfaces
.......................................
78
3.3
SRM Functionality
....................................................
80
3.3.1
Background
....................................................
80
3.3.2
SRM Concepts
.................................................
82
3.3.3
Conclusion
.....................................................
90
3.4
Data Management in WLCG and EGEE
.............................
91
3.4.1
The WLCG Infrastructure
.....................................
91
3.4.1.1
The Tiers Model
......................................
92
3.4.1.2
The WLCG Data Management Services
and Clients
............................................
92
3.4.2
High-Energy Physics Use Cases
...............................
93
3.4.2.1
Constraints for Distributed Computing
and Storage
...........................................
94
3.4.3
High-Level Physics Use Cases
.................................
94
3.4.3.1
Reconstruction
........................................
94
3.4.3.2
Mainstream Analysis
.................................
95
3.4.3.3
Calibration Study
.....................................
96
3.4.3.4
Chaotic Analysis
......................................
97
3.4.4
Storage Requirements
..........................................
97
3.4.4.1
The Classic Storage Element and SRM v1.1
.........
97
3.4.4.2
The Storage Element Service
.........................
99
3.4.4.3
Beyond the WLCG Baseline Services
Working Group
.......................................
100
73
