One of the smaller Physics projects, GLAST (Gamma-ray Large Area Space Telescope) is
looking at storing their data in Oracle. The bulk of thge data will be a sky map of
individual photons, about 20 terabytes, acquired at a rate of about 1 TB a year. What
size is the largest Oracle database at present? I believe Oracle should be able to
handle this, but I'd like to know if anyone has approached this size. I hear rumors
of Oracle databases of hundreds of terabytes at the CIA, but I have no way to confirm
them.
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Offtopic
I wrote a little while ago about CERN considering Oracle for LHC project, and needing
a petabyte database. It turns out that the number was incorrect. The petabyte that
was tossed around a few years ago would be for online and secondary storage only. I
don't know their needs for tertiary storage, but our little project here , called
Babar, which is expected to store half a petabyte of data in online and nearline
storage is sized to 300 petabytes when tertiary storage is included. The 0.5
petabytes for online and nearline will probably be upped. If LHC has the same
relationship between tertiary and online/nearline storage, then they will need
something which can handle about 600 petabytes. Last week I attended a meeting on a
project called SuperBabar. Data estimates of size for that one are one exabyte. I'm
sure there are others in the works which will make SuperBabar look tiny. The mind
boggles.
Babar is not in Oracle and I don't expect SuperBabar will be either.
Ian MacGregor
Stanford Linear Accelerator Center
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