Block & File System Storage
Cray sells, integrates and supports DataDirect Networks (DDN) SFA12K, SFA10K, S2A6620 RAID subsystems for block storage in high performance file systems that are connected to Cray XK7 and Cray XE6 supercomputers and other external servers.
DDN RAID subsystems use Lustre™, which offers high performance scalable parallel I/O capabilities, POSIX semantics, and scalable metadata access. These SFA12K & SFA10K RAID subsystems can be used as block storage devices for object data in either directly attached or externally attached Lustre file system configurations.
Both the SFA10K & SFA12K controller couplet use dual rack mounted (4U each) enclosures. Each SFA couplet is configured with either 5 or 10 drive enclosures. Choose from the 84 bay 4U enclosure or a 60-bay 4U with 3.5" drives or a 24-bay with 2.5" drives.
All controllers connect to the disk drives using 6Gb SAS back-end disk channels. Drive capacities can be 450GB, 600GB or 900GB 10K or 15K rpm SAS or 1TB, 2TB or 3TB 7.2K rpm Near-Line SAS. Cray also supports Lustre file system RAIDs based on the S2A6620 that will expand to 120 drives in 8U.
All storage systems arrive installed in DDN disk cabinets and come with worldwide power support and water-cooled door options.