Speaker
Arne Wiebalck
(CERN)
Description
Serving more than 3 billion accesses per day, the
CERN AFS cell is one of the most active
installations in the world. Limited by overall
cost, the ever increasing demand for more space
and higher I/O rates drive an architectural
change from small high-end disks organised in fibre-channel fabrics towards external SAS based
storage units with large commodity drives. The
presentation will summarise the challenges to
scale the AFS service at CERN, discuss the approach taken, and highlight some of the applied
techniques, such as SSD block level caching or
transparent AFS server failover.
Primary author
Arne Wiebalck
(CERN)
