Hp 3PAR System Reporter Software Uživatelský manuál stáhnout pdf (Strana 286)

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9.14

Adaptive Optimization Reports

3PAR System Reporter User’s Guide System Reporter 2.8

Figure 9-3. Region IO Density with Adaptive Optimization

You can see from the chart on the left that most of the space is used by tier 2 (blue) for regions

that have a very small access rate. You can also see from the chart on the right that most of the

IO accesses are handled by the regions in tier 0 (red) even though the chart on the left shows

that these regions occupy very little space. This case illustrates Adaptive Optimization working

very well: the fastest tier handles most of the IO accesses even though it uses very little space,

and conversely most of the space is on the slowest tier even though it does very little IO. The

region IO density report can also be useful to see if Adaptive Optimization will be useful for

the space in a CPG.

Figure 9-4 on page 9.15 shows the Region IO density report for a CPG without Adaptive

Optimization. The charts shown are very similar to the charts in Figure 9-3 on page 9.14, except

that there is only one tier (CPG).

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