You can use Multiple Device Manager (MDM) performance data-collection tasks as an aid for evaluating performance across a data-storage environment. A defined task collects performance data from MDM supported storage devices. You define performance data-collection tasks using the MDM Performance Manager interface panels.
Defined and saved performance data-collection tasks are displayed in the IBM Director Task pane. Authorized MDM users can view, modify, and delete a performance data-collection task.
Once a performance data-collection task is saved, you can create a job within the IBM Director scheduler. Performance collection tasks must be defined and contained in a scheduled job before you can use gauge, threshold, and Performance Manager advisor functions. You can define the date, the time, and any job repetition parameters using the scheduler functions. You can also view, change, and delete jobs containing performance data-collection tasks using the scheduler.
Performance Manager uses an integrated configuration assistant tool (ICAT) interface for an IBM TotalSTorage SAN Volume Controller to start and stop performance statistics collection on a SAN Volume Controller device. If the device is available and the connection is successfully established, a secure shell (SSH) is used to retrieve files that contain performance data. These files are copied into a directory on Performance Manager. Data is read from these files and saved into Performance Manager database tables.
To collect performance data for the IBM TotalStorage Enterprise Storage Server (ESS), Performance Manager invokes the ESS Specialist server, setting a particular performance data-collection frequency and duration of collection. ESS Specialist collects the performance statistics from an ESS, establishes a connection, and sends the collected performance data to Performance Manager. Performance Manager then processes the performance data and saves it in Performance Manager database tables.