dCache for Photon Science Outline: Overview and Resources Photon - - PowerPoint PPT Presentation

dCache for Photon Science

Birgit Lewendel for the dCache operations team DESY IT 6th dCache Workshop

Outline:

Overview and Resources Photon dCache Monitoring Summary

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 2

National Analysis Facility

GRID

Atlas Atlas

XFEL ILC, Calice Olympus Belle

HERA

CTA H1 ILDG, Pitz IceCube 900 TB 1500 TB 2000 TB 300 TB 900 TB

Local Batch Farm Local Batch Farm

180 TB 670 TB 0.7 PB 3.5 PB

DESY Zeuthen

450 TB

Photon

HZG, Petra III, Flash, CFEL

dCache at DESY

/usr

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 3

Photon Science Data

Data Sources Requests

Photon scientists work in small groups. Experiments often record small size images.

• ACLs for NFS4.1
• Container for small files
• Flash FEL
• PetraIII Synchroton radiation
• Doris Synchroton radiation
• XFEL components
• Accelerator simulation
• External (LCLS, ESRF, …..)

Data volume: GB to PB

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 4

Photon dCache

dcache-se-photon admin, statistics, http dcache-door- photon02 gridftp dcache-dir-photon NFS4.1 server pnfsManager PoolManager,gPlazma dcache-door- photon01 NFS3 server dcap NFS4.1 clients SL6.2 idmapping dcache-photon01 – dcache-photon30 disk-only write pools dcap clients 10+ WGS different photon sources and accelerator physics 2.1

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 5

Monitoring

> Why

• 5 instances with ~400 pool nodes
• History
• Repeat any time
• Run tests at different frequencies
• Compare to last result

> How cron and scripts with input from admin interface, postgres DB, web page

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 6

Monitoring

Birgit Lewendel | 6th dCache WS | 19.04.2012 | Page 7

Summary

> dCache operations team monitoring > Data management for photon science > dCache NFS4.1 server in production