which Smart Array controller (type/model) is in use? In general you can view the health via the iLo webinterface for example.
I recommend HP Insight Control, if you have a large infrastructure uses this software.
You can see the health status of all hardware, firmware versions as you can even update firmware through the Virtual Center.
But if you do not want to complicate or have a small infrastructure, configurate alerts for hardware and sends you alerts on mail or SMTP.
The controller is a Smart Array P440AR, as for iLo we don't have a license for it, does that mean I can't use the web interface?
It should present basic health data even without a licence, the webinterface of the iLo should be available and you may also view the system logs via the webinterface.
But an iLo license is always worth it as you can run remote KVM/console. iLo usually uses a dedicated network port, so you may need to configure and connect that first.