Speaker
O. Smirnova
(Lund University, Sweden)
Description
In common grid installations, services responsible for storing big data
chunks, replication of those data and indexing their availability are usually
completely decoupled. And a task of synchronizing data is passed to either
user-level tools or separate services (like spiders) which are subject to
failure and usually cannot perform properly if one of underlying services
fails too.
The NorduGrid Smart Storage Element (SSE) was designed to try to
overcome those problems by combining the most desirable features into one
service. It uses HTTPS/G for secure data transfer, Web Services for
control (through same HTTPS/G channel) and can provide information to
indexing services used in middlewares based on the Globus Toolkit (TM). At
the moment, those are the Replica Catalog and the Replica Location
Service. The modular internal design of the SSE and the power of C++
object programming allows to add support for other indexing services in
an easy way.
There are plans to complement it with a Smart Indexing Service capable of
resolving inconsistencies hence creating a robust distributed data storage
system.
Primary authors
A. Konstantinov
(Vilnius University, Lithuania)
A. Waananen
(Niels Bohr Institute, Copenhagen, Denmark)
B. Konya
(Lund University, Sweden)
F. Ould-Saada
(University of Oslo, Norway)
J L. Nielsen
(Niels Bohr Institute, Copenhagen, Denmark)
J R. Hansen
(Niels Bohr Institute, Copenhagen, Denmark)
M. Ellert
(CERN)
O. Smirnova
(Lund University, Sweden)
P. Eerola
(Lund University, Sweden)
T. Ekelof
(Uppsala University, Sweden)
