Start SSD cache performance modeling
The start ssdCache performanceModeling command starts performance modeling for the SSD cache.
Supported Arrays
This command applies to an individual DE2000H, DE4000H, or DE6000H storage array.
Roles
To execute this command on an storage array, you must have the Storage Admin role.
Context
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.
Syntax
start ssdCache [<var id="GUID-29EE426E-C5A3-41E5-A6FD-18E9883A0834__V1427489" className="keyword varname">ssdCacheName</var>] performanceModeling
Parameters
| Parameter | Description |
|---|---|
| ssdCache | 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. |
Notes
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.