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SANtricity commands

Start SSD cache performance modeling

Contributors netapp-driley

The start ssdCache performanceModeling command starts performance modeling for the SSD cache.

Supported Arrays

This command applies to any individual storage array, including the E2700, E5600, E2800, E5700, EF600, and EF300 arrays, as long as all SMcli packages are installed.


To execute this command on an E2800, E5700, EF600, or EF300 storage array, you must have the Support Admin role.


Performance modeling monitors and measures I/O activity for a period of time and estimates performance for various SSD cache sizes. Performance is estimated using two metrics: cache hit percentage and average response time. The performance modeling data is not available until you stop the operation using the stop ssdCache performanceModeling command.


start ssdCache [ssdCacheName] performanceModeling


Parameter Description


The name of the SSD cache for which you want to model performance. Enclose the SSD cache name in square brackets ([ ]). If the SSD cache name contains special characters or consists only of numbers, you must enclose the SSD cache name in double quotation marks (" ") inside square brackets.


Performance modeling ends and the performance modeling data is available when one of the following conditions occurs:

  • Run the stop ssdCache performanceModeling command.

  • Retrieve the performance modeling data using the storage management software.

Performance modeling ends, but no data is available when one of the following conditions occurs:

  • You reboot the controller.

  • You make any changes to the SSD cache configuration.

  • The state of the SSD cache changes.

Minimum firmware level


11.80 adds EF600 and EF300 array support