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: [log in to unmask] Tel +49 7531 88 4049 Fax 3183
Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz
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