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---+ Data Storage This page describes where to store your data in order to run over it. ---+ Locally For small to medium amounts of data it is recommended that you store it in either: <verbatim> /opt/ppd/scratch /opt/ppd/month </verbatim> Each has a capacity of 1.6 TB. ---+ On the Grid (at RAL) The advantage of storing data on the grid is that there is alot more avaliable storage space. By Storing data on the grid at RAL local users will be able to run over the data interactively for developing software as well as looking at smaller samples as well as running over the same data as a grid job. The dis-advantage is that you don't have full control over your data and some things can take time. If you wish to copy either ATLAS data that is already on the grid to RAL you can download a small amount using DQ2-get. If you want to run over a larger sample you can request data replication via [[http://panda.cern.ch:25980/server/pandamon/query?mode=ddm_req][Data Replication] <verbatim> dq2-put -L SITENAME -s SOURCEDIRECTORY DATASETNAME </verbatim> The SITENAME is: UKI-SOUTHGRID-RALPP_SCRATCHDISK The DATASETNAME needs to follow the [[https://twiki.cern.ch/twiki/bin/view/Atlas/DQ2ClientsHowTo#DatasetNameRules][Dataset naming rules.]] -- Main.AlastairDewhurst - 2010-01-29</verbatim>
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Topic revision: r2 - 2010-01-29
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AlastairDewhurst
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