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The
CDR FAQ attempts to answer the most frequently asked questions
about the CERN Central Data Recording Service. If your question is
not answered in this FAQ, please email
cdr.support@cern.ch.
-
Introduction
- What is the Central Data Recording
(CDR) ?
- Who is responsible for the
CDR service ?
- What is the policy concerning
usage of the CDR ?
- Who contributed to the development
of the CDR
-
General
questions
- How much will it cost to use
the CDR service
- What are the system requirements
for using the CDR ?
- Who do I contact for help
or support ?
- Do I need afs for the CDR
?
- What account does the CDR
run under ?
- Does the CDR run over the
winter shutdown period ?
- What should be done at the
end of a run ?
- What resources does the CDR
consume ?
- Can the CDR be used with
Objectivity and ROOT ?
-
Getting
started
- How do I start using the
CDR ?
- What architectures are supported
?
- My DAQ does not run a CDR
supported OS.
- How do I control the CDR
?
-
Data
access and storage - CASTOR
- Where does the CDR store
my data
- How do I see my CDR files in CASTOR
- How do I access data recorded
to obsolete tapes via CDR
- How do I access data recorded
to CASTOR via CDR
- Data files on the DAQ are
- How do I know if my data
in CASTOR have been migrated to tape ?
- Data in CASTOR are not the
same as the data on the DAQ disks
- Troubleshooting
- DAQ filesystems are 100%
full
- I get error mail messages
from Cron under the CDR account
- There is a problem with the
CDR service request form
- CDR fails to transfer some
files (I/O error)
- How do I know if the CDR is
running on my DAQ
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CASTOR
