Setting the replication rate limit for the TS7600 ProtecTIER Deduplication Solutions, V3.4.1

Setting the replication rate control allows you to limit the nominal and physical throughput (data flow rate) of replication.

About this task

The values set for the physical and nominal limits have no explicit influence on one another. That is, the values set in the physical throughput may, but do not necessarily impact those values set in the nominal throughput, and vice versa.

The physical throughput limit restrains the amount of I/O and resources replication consumes on the local repository. Implicitly, this reduces the total load on the replication networks used by the repository (you can have 2 networks) and the amount of resources needed on the peer repository, as well.

The nominal throughput directly affects the load on the destination repository. On the source repositories, the replication nominal rate does not necessarily compete with the backup. Setting the limit on a source repository guarantees that the backup gets the total possible throughput minus the nominal limit, but in many cases this is not needed.

The Replication Rate Limits window displays physical and nominal throughput. You can define one limit that applies to both incoming and outgoing replication activity or accept the Default settings mode, Combined settings mode, or you can define separate limits for incoming and outgoing replication activity by choosing the Individual settings mode.

Procedure

  1. From the Systems Management view, select Set replication rate limits from the Replication menu.
  2. Choose the preferred mode to define the incoming and outgoing replication rate limits:
    • Default settings
    • Combined settings
    • Individual settings
  3. Select the checkbox next to the desired option and enter a value (in MB/Sec). If a checkbox is not selected, the value will revert to an unlimited replication rate.
    Note: When replication time frames are defined and replication is taking place with the time frame, replication will not be limited. If the system is not within the replication time frame, no replication will take place.
  4. To return to the original replication rate limits that were defined during installation for the physical and/or nominal throughputs, select Default system settings as the mode. The values will default to their original settings at setup.

    Following are the default values for the combined replication rate limits:

    Table 1. Combined replication rate limits
    Combined settings Default values (Incoming & Outgoing)
    Physical throughput limits (MB/Sec) Unlimited
    Limit when no backup or restore load (MB/Sec) Max nominal throughput (the value selected during new repository creation)
    Limit during backup or restore load (MB/Sec) 15% of max nominal throughput
    Limit within a replication timeframe (MB/Sec) Unlimited

    Following are the default values for the individual replication rate limits:

    Table 2. Individual replication rate limits
    Individual settings Default values (Incoming) Default values (Outgoing)
    Physical throughput limits (MB/Sec) Unlimited Unlimited
    Nominal throughput limit when no backup or restore load (MB/Sec) Max throughput Max throughput
    Nominal throughput limit during backup or restore load (MB/Sec) 15% of max throughput 15% of max throughput
    Nominal throughput limit within a replication timeframe (MB/Sec) Unlimited Unlimited
  5. Click Ok to save the changes and close the window.

What to do next

Go on to Limiting the network interface bandwidth for the TS7600 ProtecTIER Deduplication Solutions, V3.4.1.
Parent topic: Native Replication Management for the TS7600 ProtecTIER Deduplication Solutions, V3.4.1