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SmartQoS Feature Guide 11

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

This document describes the implementation principles and application scenarios of theSmartQoS feature. Also, it explains how to configure and manage SmartQoS.
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Creating a Traffic Control Policy

Creating a Traffic Control Policy

A traffic control policy is a group of I/O classes and their performance targets, telling a storage system what performance targets the I/O classes have and how to achieve those targets.

Prerequisites

A license file that contains the SmartQoS license information has been imported into the storage system.

Context

There are two types of traffic control policies:
  • Upper-limit traffic control policy: controls the upper limits of bandwidth and IOPS.
  • Lower-limit traffic control policy: controls the lower limits of bandwidth and IOPS and the upper limit of latency.

You can only select LUNs, snapshots and file systems with high I/O priority for a lower-limit traffic control policy, and you must not change the priorities of the LUNs, snapshots and file systems that are working with a lower-limit traffic control policy.

Procedure

  1. Log in to DeviceManager.
  2. Choose Provisioning > Resource Performance Tuning > SmartQoS > Traffic Control.
  3. Click Create.

    The Create Traffic Control Policy Wizard dialog box is displayed.

  4. In the Name text box, enter a name for the traffic control policy that you want to create.
  5. Select the Control Objective.
    1. In the Set Name dialog box, click Next.

      The Set Control Objective dialog box is displayed.

    2. In Application Scenario, Select the scenario.
    3. In Control Type, select the I/O characteristic that you want the policy to control.

      The possible I/O characteristics include Read I/O, Write I/O, and Read/Write I/O.

    4. In Control Policy, select the control policy type that you want to set. The possible control policy type include Upper limit control and Lower limit control.
    5. In the Control Objective area, set a performance goal that you want this policy to achieve.

      The possible performance goals include IOPS, Bandwidth or Latency.

  6. Set a triggering policy for the traffic control policy.
    1. In the Set Control Objective dialog box, click Next.

      The Set Trigger Policy dialog box is displayed.

    2. In the Started Date text box, set a date from which the traffic control policy starts to run.
    3. In the Execution Period area, set a frequency at which the traffic control policy runs.

      The possible frequencies are:
      • One-off: The traffic control policy runs only on the day specified in Started Date.
      • Weekly: The traffic control policy runs on the day in each week following the day specified in Started Date.

    4. In the Execution Time area, set the time when the traffic control policy starts to run and the hours that it lasts for.
  7. Select the control objects to which the control policy will be applied.
    1. In the Set Trigger Policy dialog box, click Next.
    2. Select the engine which the LUN or snapshot is owning to.
    3. Optional: In the Available LUNs area, select the LUNs that you want the policy to control.
    4. Optional: In the Available snapshots area, select the snapshots that you want the policy to control.
    5. Optional: In the Available file systems area, select the file systems that you want the policy to control.
  8. Confirm all the attributes that you want to set for the traffic control policy.
    1. In the Select Control Object dialog box, click Next.

      The Summary dialog box is displayed.

    2. Confirm the attributes of the traffic control policy.

      • If all attributes are correct, click Finish to complete the creation.

        The Execution Result dialog box is displayed indicating that the operation succeeded. Click Close.

        The security alert dialog box is displayed indicating that the traffic control policy will be activated. Click OK.

        The Execution Result dialog box is displayed indicating that the operation succeeded. Click Close.

      • If an attribute is wrong, reset it.

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Updated: 2018-09-03

Document ID: EDOC1000084215

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