Version 15.1 User’s Manual

Before vs After—Measuring HA (Role Swap) Environments
Multiple System Before vs. After Historical System Overview Analysis
Understanding The Output—Performance Management Data
Here we show an example of the output...Looking at disk arm utilization:
Notice we show numerous things on each page:
First, the left JPG is our “Before” system 1 being analyzed. The Right JPG is our AFTER system
(1) Shows that our production system (AHIPRD02) was analyzed for 49 days
(2) Shows that our HA system (R2IHA01) was analyzed for 25 days
(3) Shows (A) - Average / Peak disk arm % for Production (AHIPRD02) for the period measured
(B) - Average / Peak disk arm % for HA (R2IHA01) for the period measured
(c) - Indicated the percentage of change difference when comparing both systems
Notice each system is measured against best practice guidelines...
Version 15 User Manual Page 211 Oct 2011