Wednesday, 25th November 2020

Supercomputer storage support

DDN's SFA18K® Series has been adopted as the second-tier storage system for the supercomputer Fugaku. A four-time award-winning supercomputer, including the number-one ranking in the TOP500 list in June 2020, Fugaku is in joint development with RIKEN and Fujitsu Limited, aiming to start operation in 2021.

The SFA18K Series is DDN's latest platform featuring high throughput, high density and low power consumption. Fugaku's second-tier storage system requires a total effective capacity of at least 150 PB, with a minimum effective throughput of 1.5 TB/s. Joint testing between DDN Japan and Fujitsu confirmed that a configuration of five SFA18KE and twenty-five SFA18KXE devices, mounted with Fujitsu's FEFS file system, met these requirements for successful adoption.

Robert Triendl, general manager of DDN Japan, commented, "We are a leader in storage for high-performance computing, with our systems in supercomputers all over the world, and now in these leading-edge supercomputers in Japan. I am extremely proud that we have been selected as the chosen provider for Fugaku, a national project said to be the pinnacle of Japan's technological

capabilities. We look forward to collaborating closely with RIKEN and Fujitsu ahead of the launch of Fugaku's operations, and supporting smooth operations thereafter."

The SFA18K Series Overview

In Fugaku's second-tier storage, the SFA18KE and SFA18KXE will be used as compute nodes for OSS (object storage servers), which serve as a gateway to data storage units. The "E" in SFA18KE and SFA18KXE stands for "embedded," with OSS implemented on a virtual machine (VM) on the storage controller; hard drives in expansion disk enclosures are utilized as OSTs (object storage targets), used for data storage.

The main features of the SFA18K Series are:

·Highly optimized internal PCI-express fabric and a 12Gb back-end SAS fabric ensure high-speed, low-latency data access

·Industry-leading density enables use of an unmatched number of flash devices (NVMe/SAS) and HDDs in minimal physical space, making it ideal for HPC environments requiring extended capacity

·Scalable, declustered RAID enables quick rebuild times of new high-capacity drives, higher data availability and data protection, as well as the striping of data across a much larger set of physical disks than was previously possible with traditional RAID, greatly improving the parallelism of drive rebuilds

·Highly-aggregated hardware significantly reduces cost and complexity, and with fewer ports, cables, and network devices, administrative costs can be reduced by as much as 70 percent

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