Speaker
Dr
Doris Ressmann
(Forschungszentrum Karlsruhe)
Description
At GridKa an initial capacity of 1.5 PB online and 2 PB background storage is needed
for the LHC start in 2007. Afterwards the capacity is expected to grow almost
exponentially. No computing site will be able to keep this amount of data in online
storage, hence a highly accessible tape connection is needed. This paper describes a
high-performance connection of the online storage to an IBM Tivoli Storage Manager
(TSM) environment.
The performance of a system does not only depend on the hardware, but also on the
architecture of the application. The scenario we are describing distributes its files
over a large number of file servers, storing their data with the help of a proxy node
to tape. Each file server can restore the data independent on the file server which
has stored the data originally. Furthermore with the LAN free connection to the tape
drives the data transfers bypass the TSM server which otherwise would be a
bottleneck. The system is completely transparent to the user.
Primary authors
Dr
Doris Ressmann
(Forschungszentrum Karlsruhe)
Dr
Silke Halstenberg
(Forschungszentrum Karlsruhe)
