Storage servers
Further to the local disk of each node with a 36GB capacity, MareNostrum has 20 storage servers arranged in 7 racks. These have a total of 560 disks of 512GB and each one provide a total capacity of 280 TB external storage. These disks are working with GPFS (Global Parallel File System) which offers a global vision of the file system and also allows a parallel access.
The 2560 nodes access the disks through the Gigabit network.
Each one of the 20 storage nodes has two nodes p615 in charge of the disk requests, a controller type FAStT100 and one unit EXP100. Each node p615 Gbit connections and Ethernet 10/100 connection.
