News
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dCache Articles
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Workshops and tutorials
- The German dCache support group has been scheduling the next dCache workshop for April 13/14. Stay tuned.
- The German Storage Support group organized a "dCache Administration Workshop with hands-on" during the 2009 GridKa school.
- Security
- dCache.org is introducing a new mailing list :
security at dcache dot org
dCache user should report problems or bugs to this list if there is the suspicion that the issue is security related or if the
report may contain confidential information. (e.g. passwords). Only a very restricted number of people have access to this
particular mailing list.
- Newletters and announcements.
- Chimera :
In order to be prepared for the first year of LHC datataking, we recommend to upgrade the pnfs filesystem to chimera. Please checkout the migration
instructions and give it a try. You can evaluate the
entire migration procedure in a safe test environment. Some sites already started the migration end of last year. Up to know, the NDGF Tier I and
about 10 dCache Tier II are operating chimera. No problems have been reported yet. More information is available from
our documentation area.
The main advantages of chimera are :
- Chimera scales nicely with the hardware performance and the database backend.
- You may run regular SQL queries to collect maintainance and monitoring information of the chimera filesystem.
- File system ACL inheritance is only available with Chimera. With pnfs, newly created directory will get the default set of ACL's. With Chimera it will inherit its parent ACLs .
| Chimera upgrade schedule |
Tier 1's
- NDGF : done
- IN2P3 : done
- gridKa
- CMS : done
- Atlas : Feb 1, 2010
- SARA : done
- Triumf : scheduled : mid of Feb
- FERMI : scheduled : N/A
- BNL : scheduled : N/A
- PIC : scheduled : N/A
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Tier II's
- DESY
- Atlas : done
- CMS : done
- ILC, DESY-generic : done
- H1 Resilient : done
- Hera : done
- Aachen : done
- Wuppertal : done
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- The dCache wiki : In addition to the Book, we offer a
wiki were you may find some more helpful information.
Check the link to findout on how you can contribute to the wiki with advise, documentation or tools.
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Current release
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1.9.6 is out. It is our next step in supporting industry protocols. In addition to the already implemented NFS4.1 protocol it provides a first version of our WebDAV implementation allowing to browse and up/down-load your dCache files with a standard web browser or mount your dCache with Linux, Windows and MAC OS.
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Supported and expected Releases
- 1.9.7 scheduled for March 8, 2010.
- 1.9.6 in pre-production.
- 1.9.5 Golden Release will be depricated end of 2010.
- 1.9.4 will be depricated March 8, 2010.
General Release Policy
- Time Based Releases : The dCache project is moving
away from feature based releases towards Time Based Releases. As the name already implices, this essentially means that
we will be better in predicting when a release is being published. The drawback is that features which don't make it into the
repository till some time before the release is due, just won't be part of that release. The advantage is that
sites can do better planing in upgrading and that the synchronization with our distributors is eased.
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Golden Release
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- Golden Release : The Golden Release (1.9.5) is meant to be maintained throughout the entire first round of LHC data taking.
- Version 1.9.5 is out.
Please make yourself familiar with the release notes. 1.9.5 includes :
- File System Access Control Lists (ACL's), as already in 1.9.3.
- The asynchronous srmLs, as already in 1.9.3.
- Tape System Protection. This feature allows to restrict "Tape Read Access" to a white list of DN/FQANs.
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