DataPlow SAN File System

The SAN File System (SFS) is a high-performance, clustered file system created by the company DataPlow. SFS enables fast access to shared files located on shared, storage area network (SAN)-attached storage devices.[1] SFS utilizes the high-speed, scalable data transfers inherent to storage area networks and is a general-purpose file system for a wide variety of environments, including scientific computing, finance, healthcare, entertainment, defense, broadcast, and aerospace.

Platforms

It is supported on Linux, Solaris, OS X, and Windows.

Supports all SAN-based, block-level storage protocols including Fibre Channel and iSCSI.

Features and specifications

Interoperability

  • Supports NFS and CIFS/Samba file serving
  • Supports virtual machine software: Microsoft, VMWare, and Zen
  • Supports all major backup software
  • SAN features: virtualization, zoning, snapshots, mirroring, and redundant network connections

Security

  • High security mode
  • UNIX: POSIX compliant permissions
  • Windows: Access control lists (ACLs)

Specifications

  • ASCII, UNICODE, and UTF-8 filename character encoding
  • Supports binary executables
  • User-level (Advisory) record locking
  • Journaling for fast recovery
  • Extent addressable storage minimizes fragmentation
  • UNIX: Volume attaches to mount-point
  • Windows: Volume attaches to drive letter
  • Buffered, synchronous, asynchronous, direct, and memory mapped I/O

Limits

  • 255 character filename length
  • Unlimited pathname length
  • 8 Exabyte file size
  • 64 Exabyte volume size

References
  1. "Functionality and Performance Evaluation of File Systems for Storage Area Networks (SAN)" (PDF).
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