HP XP P9500 Storage - Manual (Page 93)

Cautions when using monitoring modes
•
If Continuous mode is used, best practice is to collect monitoring information using the following
execution modes:
◦ Auto execution mode
◦ Manual execution mode with collecting the periodic monitoring information by defining
a script using RAID Manager
If the Manual execution mode is used without scripts, the Continuous monitoring mode can
be set. However, in this case, unexpected results may be calculated because the weighted
average efficiency is calculated based on very different duration (short and long) periods
information obtained in the past cycles.
•
When the monitoring mode is set to Continuous, the Remote Web Console window and in
RAID Manager display the following values that are calculated by using the monitor value on
which the weighted calculation is performed.
◦ Performance utilization of each tier.
◦ Frequency distribution of each pool and THP V-VOL.
These calculated values are the predictive values for the next cycle after successfully relocating
all pages. Therefore, these values may differ from an actual monitoring result when they
appear.
If you switch the monitoring mode from Period to Continuous or from Continuous to Period,
the current cycle’s monitoring data that is being collected is not discarded. However, the data
calculated by using past monitor cycle information on which the weighted calculation is done
will be reset.
Smart Tiers 93