Stephen Graham schrieb:
If at all possible you should consider outsourcing it. You might have access to some kind of large university of national facility for archiving scientific/academic 'data'. Otherwise there are companies who specialise in archiving data - for a fee they will take the problem out of your hands (and you don't need to worry about what format to use, what to do once the media you currently use become scarce, etc).Either way, we should all lobby the PDB or someone to archive all the images for us pronto!
A more realistic suggestion would be central storage of all diffraction data required to reproduce a PDB entry, which would indeed be highly desirable. A first step would be to "lobby" the PDB that they _allow_ deposition of datasets. I estimate that the amount of (compressed) data per PDB entry would be on average 2 GB for molecular replacement structures, and maybe 5 GB for SAD/MAD structures.
I am storing _all_ data collected since 1999 at synchrotron sites, together with data reduction, on harddisk.
Our hardware currently is an eSATA 4 TB RAID5 in a €340,- RaidSonic Stardom ST6600-5S-S2 5-disk case (http://www.raidsonic.de/de/pages/search/search_list.php?we_objectID=4239&pid=0). A terabyte disk now is less than €100, so the whole thing costs €800,- . RAID5 guards against single-disk failures, and I keep a spare terabyte disk in case I have to exchange one of the five internal ones. The unit is hooked up to a Linux machine with a recent kernel (which supports the SATA port multipier feature) and a eSATA adapter (e.g. Adaptec 1225SA). We have two of those in different buildings, and I do a daily (rsync) copy of the master to the backup.
I'm running this for over a year, and am happy with it. best, Kay -- Kay Diederichs http://strucbio.biologie.uni-konstanz.de email: kay.diederi...@uni-konstanz.de Tel +49 7531 88 4049 Fax 3183 Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz This e-mail is digitally signed. If your e-mail client does not have the necessary capabilities, just ignore the attached signature "smime.p7s".
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