Aspera High Peformance Synchronization and ReplicationAspera Sync 3.6 & 3.7

Aspera Sync is purpose-built by Aspera for high-performance, scalable, multi-directional asynchronous file replication and synchronization. Designed to overcome the performance and scalability shortcomings of conventional tools like rsync, Aspera Sync can scale up and out for maximum speed replication and synchronization over distant WAN connected locations. Aspera Sync tackles today's largest big data stores with ease by both optimizing for the largest file sizes and for millions of individual files.


  • The latest release integrates asperawatchd, a new ultra fast file system notification service designed for speed, scale and distributed change watching.
    • Quicky discovers changes in huge file systems - up to 100 million items across thousands of directories
    • The distributed architecture captures changes on any local or shared storage client host (CIFS, NFS, etc.) and aggregates all changes in real time in a single snapshot
    • Highly scalable for large numbers of concurrent clients (e.g. Aspera Drive or async clients) by allowing each client to compute its differential changes relative to a single snapshot on the server side
    • Supports push, pull and bidirectional synchronization
  • Synchronizes file attribute changes even when content is not updated, e.g. Windows ACL and Unix ownership (user and group)
  • Includes LZ compression for high performance on low capacity networks
  • A single FASP transfer session supports multiple parallel transfer channels segmented by data size, allowing small files to be synchronized (and deduplicated) in parallel with long running transfers of large files resulting in greater scalability and performance
  • Direct-to-Cloud synchronization to object storage (AWS S3, Swift) is now compatible for push, pull and bidirectional synchronization of changes on cloud storage. Now supports synchronization initiated on cloud storage in addition to cloud storage on the server side.
  • New compatibility with Windows file locking avoids errors and conflicts in bidirectional synchronization of files open in Word or other MS Office applications through graceful transparent retries and skipping of temporary/shadow backup files
  • New API for creation of sync jobs and reporting of changes.
  • New optional periodic scan capability in bidirectional continuous mode, with options to configure scan interval separately on source and destination
  • Enhanced performance for high concurrency sync (many Drive clients) with lower CPU utilization
  • New enhanced server side reporting reports Drive sync sessions and Drive users to Console and includes sync target paths
  • New recursive mtime option enables excluding directories and files older than a configured timestamp (v 3.7)
  • New asyncadmin option prints file attributes (mtime, recursive mtime for directories and checksum)  (v 3.7)