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Throttle SnapMirror globally in ONTAP 9 to reduce impact on other workloads

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snapmirror
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dp
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Applies to

ONTAP 9

Answer

  • ONTAP 9 introduces a global SnapMirror throttling option configurable via the options command in cluster shell.
    • Example:

::> options -option-name replication.throttle.enable <on|off>

::> options -option-name replication.throttle.incoming.max_kbs <KBps>

::> options -option-name replication.throttle.outgoing.max_kbs <KBps>

  • The ONTAP 9 global throttle affects remote and local Type-DP and Type-XDP SnapMirrors.
  • Changing global throttle takes effect immediately, while changing per-relationship throttle is reflected from the next transfer.
    • Note: All replication throttles in ONTAP are in KiloBytes per second.
  • If throttling isn't desired globally, this can also be done on a per-relationship basis.

 

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