HP 3PAR StoreServ 7000 Storage - Manual (Page 185)

not be optimal. We can achieve optimal results by scheduling adaptive optimization execution for
11 am Monday through Friday with a measurement interval of 3 or 4 hours. That way only
performance measurements during the important period for the application will be considered.
NOTE: The measurement hours selected should not exceed the retention time for adaptive
optimization samples set in the sampling policies (see “Editing Sampling Policies” (page 115) ).
Adaptive Optimization Mode
You have the choice of three modes to define the cost versus performance bias that controls the
manner in which data is moved for a given configuration as follows:
•
Performance -- The analysis parameters are biased towards moving the data to the faster tiers
and away from the slower tiers.
•
Balanced -- The analysis parameters are balanced between Performance and Cost.
•
Cost -- The analysis parameters are biased towards moving data to the slower (less costly)
tiers and away from the faster tiers.
You can use the mode parameter to differentiate between the resources that are available to various
configurations. For example, you may set the mode for a critical application’s configuration to
Performance and the mode parameter for a less important application to Cost. The critical
application’s data will then get relatively more of the higher performance tier space than the less
important application.
Adaptive Optimization Active
You can temporarily disable adaptive optimization by setting the Active bit to 0 (false) and re-enable
it by setting Active to 1 (true). Setting the Active bit to 0 only disables analysis and data movement,
it does not prevent System Reporter from sampling the region counters.
Adding an Adaptive Optimization Configuration
To add an Adaptive Optimization configuration:
NOTE: Although an Adaptive Optimization configuration can be added for arrays running
HP 3PAR OS 3.1.2, the configuration will not execute.
1. From the Adaptive Optimization Configuration window, click Add Adaptive Optimization
Configuration.
The Add Adaptive Optimization Configuration window appears.
2. Select the system for which optimization will be enabled. The systems that are available from
the pull-down menu are added through the InServ Systems tab in the System Reporter Policies
window.
NOTE: When you add a new HP 3PAR StoreServ Storage to be sampled, the system, its
domains and the CPGs that are available may not appear until after the CPG space data has
been sampled for that system.
3. Choose a domain.
4. Choose the CPG that is to be monitored and optimized for each tier. Up to 3 tiers may be
defined.
5. Enter the amount of storage space (in GBs) to make available for the tier.
6. Schedule when the optimization is to occur. You can specify the date/day of the week and
hour to mitigate impact on system performance by having the optimization run at off-peak
hours. Hold the CTRL key to add multiple selections.
7. Enter the measurement in hours that the sampling for optimization will take place.
8. Select the appropriate mode. Cost/Balanced/Performance.
Configuring Adaptive Optimization 185