Snapshot Replication

Features

  • Schedulable and near-instantaneous data protection
  • Supports various replication topologies for different scenarios, including active-active, extended replication, one-to-many and hub-to-spoke
  • Fast data recovery on the disaster recovery site
  • Snapshot management, preview and recovery for all file services and File Station

Specifications

  • Customizable snapshot and replication schedules
    • Snapshot can be taken every 5 minutes
    • A replication task for a shared folder can be executed every 5 minutes
    • A replication task for a LUN can be executed every 15 minutes
  • Maximum number of snapshots per system:
    • Memory exceeding or equivalent to 2 GB: 65,536
    • Others: 4,096
  • Maximum number of snapshots per shared folder:
    • Memory exceeding or equivalent to 2 GB: 1,024
    • Others: 256
  • Maximum number of snapshots per LUN:
    • Memory exceeding or equivalent to 2 GB: 256
    • Others: 64
  • Maximum replication tasks (See limitation 2)
    • 64 per system (shared folder + LUN)
    • 64 per shared folder
    • 32 per LUN
  • Customizable retention rules for different snapshot management demands
  • Supports external storage devices to boost initial replication
  • Online preview of snapshot content and downloading single file in snapshots (See limitation 7)
  • Restoration of files and folders by using Windows Previous Versions
  • Snapshot size calculation for space management
  • Customizable IP address and port of a replication task
  • Replication transmission encryption
  • Supports verification tests on site recovery and snapshot integrity

Limitations

  1. Each one-to-many/extended replication supports three different sites as destination sites at most
  2. The maximum number of replication tasks varies according to models (Refer here for more information)
  3. Only shared folder snapshots support:
    • Online preview of snapshot content
    • File and folder restoration using Windows Previous Versions
    • Calculation of snapshot size for space management
  4. Snapshots cannot be taken if there is less than 100 MB of available space on the volume
  5. NFS permission cannot be recorded in snapshots
  6. Data in the recycle bin are recorded in snapshots
  7. Encrypted shared folders do not support online preview of snapshot content