What is Fujitsu Exabyte File System?

Fujitsu Exabyte File System (FEFS) is a scalable parallel file system based on Lustre and designed for Fujitsu HPC clusters. Cooperating with Fujitsu PRIMERGY servers and ETERNUS storage, it provides high performance storage space for the daily HPC computing.

Why choose Fujitsu Exabyte File System from ClusterTech?

ClusterTech is an Official Reseller of Fujitsu Exabyte File System

Strategic cooperation between ClusterTech and Fujitsu helps customers utilise their computing resources efficiently, and gain maximum benefit from their IT investment.

Our Advantages:

  • Rich experience in satisfying the demands and solving concerns of industry application in the Greater China Region
  • Familiarity with system architecture in the Greater China Region
  • Comprehensive coverage across the Greater China Region with local experts
  • Strong local support for daily operation and maintenance


  Outstanding Performance with High Scalability

FEFS can achieve scalable I/O performance (~1TB/s) & capacity (~8EB) with multiple servers & storage. Its effective I/O usage management offers QoS by utilising all available I/O bandwidth.

  High Reliability

Avoids out-of-service time caused by a single point of failure with redundant hardware and failover mechanism. In InfiniBand Multi-rail, all IB connections are used by round-robin order by each request.

  Advanced Collaboration Environment

Supports segmentation of service threads to different node groups. Multiple teams can share the same file system with a guaranteed amount of service. It also supports per-directory usage quota, per-node fair share, etc.

  Fujitsu Hardware Ready

FEFS is guaranteed to work with a wide range of Fujitsu hardware from direct-attached subsystems to fibre channel storage systems. Its client driver can also be installed on third-party clients.


FEFS is based on the community release of Lustre software, and is hardware, server, and network fabric neutral. Enterprises can scale their storage deployments horizontally, yet continue to have simple-to-manage storage.


Per-Directory Quota

FEFS supports per-directory quota. Multiple users can put files into the same project directory.

Flexible Storage Schemes

Users can define which drive the files go to; different isolated projects can run on separate drives for guaranteed performance.


FEFS supports fair-share configuration per node. Busy interactive node (e.g., login node) can be configured to avoid a single user obstructing others’ progress.

Single File System Namespace

FEFS is capable of providing a single namespace on top of hundreds or thousands of logical volumes; zero-downtime expansion is possible.

Failover Support

With multipath storage devices, servers can be configured as high-availability active/active pairs. Failure downtime is minimised.

Higher File System Limits

FEFS supports more numbers of ACL entries than its upstream implementation.

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