Set CPU I/O resource distribution

Unisphere supports the ability to set parameters to control mixed I/O workloads on an SRDF director.

About this task

The following explains how to set parameters to control mixed I/O workloads on an SRDF director. Values that are specified here override the default values that are defined in Set system attributes.

Steps

  1. Select the storage system.
  2. Select System > Hardware.
  3. Click the OR Directors or RDF Directors tab.
  4. Select a director port and click CPU I/O Setting.
  5. Type values for any number of the following parameters. The percentages must add up to 100.
    • Synchronous I/O Percent—Type the percentage of director resources to allocate for synchronous I/Os.
    • Asynchronous I/O Percent—Type the percentage of director resources to allocate for asynchronous I/Os.
    • Copy I/O Percent—Type the percentage of director resources to allocate for copy I/Os.
  6. To reset the parameters to their defaults, click Reset.
  7. Click OK.