752 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
On any of these views, you can select any point by using your cursor to know the exact value 
and when it occurred. When you place your cursor over the timeline, it becomes a dotted line 
with the various values gathered, as shown in Figure A-7.
Figure A-7   Viewing performance with details
For each of the resources, various metrics are available and you can select which to be 
displayed. For example, as shown in Figure A-8, from the four available metrics for the 
MDisks view (Read, Write, Read latency, and Write latency) only Read and Write IOPS are 
selected. 
Figure A-8   Displaying performance counters
Performance data collection and IBM Spectrum Control
Although you can obtain performance statistics in standard .xml files, the use of .xml files is a 
less practical and more complicated method to analyze the IBM Spectrum Virtualize 
performance statistics. IBM Spectrum Control is the supported IBM tool to collect and analyze 
Storwize V7000 performance statistics.