You can switch between MBps or IOPS (see Figure 3-30, or even navigate to the statistics at  the node level. The performance statistics in the GUI shows, by default, the last 5 minutes of data. To see the  details of each sample, click the graph and select the time stamp, as shown in Figure 3-31. The previous charts represent 5 minutes of the data stream. For in-depth storage monitoring  and performance statistics of your IBM Spectrum Virtualize System with historical data, use  the IBM Spectrum Control and the IBM SmartCloudfi Virtual Storage Center.  You can also obtain a no-charge unsupported version of the Quick performance overview  ( qperf ) for the IBM SAN Volume Controller and Storwize systems from this website. Figure 3-30 Switching between MBps or IOPS Figure 3-31 Sample details 106  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1