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Dell Storage Manager 2020 R1 Administrator's Guide

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Replication Throttling

Replication throttling can fine-tune network bandwidth usage for replication of a pair of NAS volumes between two clusters.

Users can limit FluidFS replication bandwidth usage by:

  • Lowering bandwidth usage during work hours and increasing bandwidth consumption during nighttime
  • Increasing bandwidth usage during weekends

How Replication Throttling Works

Replication throttling:

  • Creates a new system entity named QoS node and defines bandwidth allocation in KBps
  • Defines usage percentage per hour of the week
  • Binds a QoS (Quality of Service) node (network level) of outgoing traffic to a replication. The average network usage should not exceed the bandwidth allocation in a minute timeframe. The default is not to limit the bandwidth for replication.

Limitations

The following limitations apply to replication throttling:
  • The maximum number of active outgoing replications is 10. If more than 10 replications are active, they are queued.
  • The maximum number of active incoming replications is 100. If more than 100 replications are active, they are queued.
  • The maximum number of replication partners is 100.
  • The maximum number of replicated NAS volumes or containers (source and target) on a cluster is 1024.
  • The maximum number of replication schedules per system is 1024.

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