Storage I/O controls

Storage I/O controls allow you to set and modify limits on volumes.

In the Data Center, some types of resources often require higher performance than others. For example, production servers such as database and application servers used to perform daily tasks of business organizations usually require high performance. However, if production servers experience decreased performance, productivity in business activities is negatively affected.

To prevent this from happening, the storage administrator needs to maintain the high performance of production servers. A drop in development server performance does not have as much of a negative effect on the entire organization as a drop in production server performance. In this case, you set upper limits to give higher priority to I/O activity from the production server over I/O activity from the development server to manage and control the impact of development activities.

Storage I/O controls are available in Ops Center Analyzer when Server Priority Manager is installed on your storage systems. You can invoke this function through Ops Center Automator after establishing a connection between the two servers. Alternatively, if Ops Center Automator is not installed on your storage system, you can use the CM REST API to create a script, which serves as a template that you modify for selected volumes to run the Server Priority Manager operation.

Using the I/O control setting, you can enable upper limits for the storage I/O activity of volumes that belong to consumers. The storage administrator clears the I/O control setting when the traffic between the server and storage system drops to acceptable levels. Furthermore, you have the option of limiting the data transfer rate on volumes affecting critical resources.