Cisco Catalyst Center Global Manager Deployment Guide, Release 1.3.1

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Enable storage input/output control

Updated: April 2, 2026

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Overview

Explains how to enable Storage I/O Control in vSphere to prioritize the virtual appliance's I/O during datastore congestion.

Complete the procedure for the datastore where you plan to deploy the appliance to prioritize the virtual appliance’s input/output (I/O) over other virtual machines during network I/O congestion.

Enable Storage I/O Control in vSphere so the deployed virtual appliance receives preferred I/O resources during datastore congestion.

Before you begin

  • Make sure you have administrator access to the vSphere Client.

  • Identify the target datastore for your virtual appliance deployment.

Procedure

1.

In the vSphere Client, navigate to and click the datastore in which you plan to deploy a virtual appliance.
2.

Click the Configure tab, and then click General.
3.

In the Datastore Capabilities area, click Edit.
4.

In the Configure Storage I/O Control window, complete these steps:

  1. Click the Enable Storage I/O Control and statistics collection radio button.

  2. In the Storage I/O congestion threshold area, configure the congestion threshold you want to use.

    You can either specify a peak throughput percentage or enter a value (in milliseconds).

  3. (Optional) In the Statistic Collection area, check the Include I/O statistics for SDRS check box.
5.

Click OK.

Storage I/O Control is enabled. The VM for the virtual appliance now receives prioritized I/O during datastore congestion.