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Hitachi Lightning 9900™ User and Reference Guide 51
3.7.26 Hitachi CruiseControl
Hitachi CruiseControl enables users to optimize their data storage and retrieval on the 9900
subsystem. Hitachi CruiseControl analyzes detailed information on the usage of 9900
subsystem resources and tunes the 9900 automatically by migrating logical volumes within
the subsystem according to detailed user-specified parameters. CruiseControl tuning
operations can be used to resolve bottlenecks of activity and optimize volume allocation.
CruiseControl operations are completely nondisruptive – the data being migrated can remain
online to all hosts for read and write I/O operations throughout the entire volume migration
process. CruiseControl also supports manual volume migration operations and estimates
performance improvements prior to migration to assist you in tuning the 9900 subsystem for
your operational environment.
Hitachi CruiseControl provides the following major benefits for the user:
Load balancing of subsystem resources.
Optimizing disk drive access patterns.
Analysis of subsystem usage using GraphTool (provided with CruiseControl).
Note: For further information on Hitachi CruiseControl, please see the Hitachi Lightning
9900™ Hitachi CruiseControl User’s Guide (MK-91RD054), or contact your Hitachi Data
Systems account team.