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To use the HP 3PAR drivers, install the following software and components on the HP 3PAR storage system:
HP 3PAR Operating System software version 3.1.3 MU1 or higher
HP 3PAR Web Services API Server must be enabled and running
One Common Provisioning Group (CPG)
Additionally, you must install the hp3parclient version 3.1.1 or newer from the Python standard library on the system with the enabled Block Storage service volume drivers.