HP StorageWorks Reference Information Storage System V1.4 Administrator Guide (T3559-96027, March 2006)

Figure 10 Alerts histogram of all ser vice events over one -day period
Whenever graph lines for events of different status values overlap exactly, only the most severe status
value is indicated. To see an event line that is hidden by overlapping, create a separate histogram for
just the h idden status value. For example, the following histogram shows o n ly recovery (OK) events for the
same time period. The OK event line from 1 1:15 to 13:15 was hidden by CRITICAL a nd WARNING
event lines in the previous histogram.
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Platform Control Center (PCC)