HP LeftHand P4000 SAN Solutions User Manual
Page 220
Figure 110 Performance Monitor graph
The graph shows the last 100 data samples and updates the samples based on the sample interval
setting.
The vertical axis uses a scale of 0 to 100. Graph data automatically adjusts to fit the scale. For
example, if a statistic value is larger than 100, say 4,000.0, the system scales it down to 40.0
using a scaling factor of 0.01. If the statistic value is smaller than 10.0, for example 7.5, the system
scales it up to 75 using a scaling factor of 10. The Scale column of the statistics table shows the
current scaling factor. If needed, you can change the scaling factor. For more information, see
“Changing the scaling factor” (page 229)
.
The horizontal axis shows either the local time or Greenwich Mean Time. The default setting is the
local time of the computer that is running the CMC. You can change this default to GMT. See
“Changing the sample interval and time zone” (page 226)
. (This time zone setting is not related to
the management group time zone.)
For information about controlling the look of the graph, see
“Changing the graph” (page 228)
Reading the Performance Monitor or Adaptive Optimization table
The Performance Monitor or Adaptive Optimization table displays a row for each selected statistic.
Figure 111 Performance Monitor or Adaptive Optimization table
The table shows information about the statistics selected for monitoring. The table values update
based on the sample interval setting.
To view the statistic definition, hold your mouse pointer over a table row.
defines each column of the table.
Table 71 Definitions of Performance Monitor or Adaptive Optimization table columns
Definition
Column
Check box used to toggle the display of the graph line on or off.
Display
Shows the current color and style for the statistic’s line on the graph.
Line
Name of the cluster, storage system, or volume being monitored.
Name
For volumes and snapshots, the server that has access.
Server
The statistic selected for monitoring.
Statistic
Unit of measure for the statistic.
Units
Current sample value for the statistic.
Value
220 Monitoring performance