Speaker
Hartmut Reuter, Max-Planck-Institut für Plasmaphysik
Title
HPSS as an HSM solution
Abstract
RZG is in the process to replace the current HSM system TSM-HSM by
HPSS. So in future all newly created files in AFS-OSD should get copies
in HPSS and also the data presently stored in TSM-HSM have to be migrated
to HPSS over the next year(s). One of the advantages of HPSS is that the
client API can be used on any Linux (or AIX) based server. Therefore
archiving can be distributed over all OSDs avoiding double transfer of
the data over the network and gaining scalability because HPSS may run
any number of data movers in parallel. Still one OSD will function as
the owner of HPSS keeping all the metadata (link tables) and doing file
creation and deletion in HPSS. The separation of data and metadata had
already been implemented to support DCACHE as HSM system two years ago,
so this code just needed to be made more generic in order to get a
solution suitable for any future HSM-interface. This code is integrated
in the current production system 1.4.12.-osd as well as in the
1.5.74-osd.
Slides/video
