Does anyone know how I can monitor (either gui or shell) the health status of my SATA disks via the P212 (256Mb) controller card of my ProLiant ML110 G6 ? I've currently got Centos 6.2 64bit installed but don't see how to show,say, the current SMART temperature values of the RAIDed SATA disks. On ubuntu I believe I have used some sensors daemon or similar in the past but not with P212 (yet).
You need to install the ProLiant management agents for your server model.
The hp-snmp-agents package will provide some of what you need, but the Array Configuration Utility (especially the hpacucli program) will be the most helpful. Since this is a 100-series server, installing the HP agents may be a bit too heavy. They're really optimized for the higher-end models.
If you're looking for a quick way to check RAID status (which is more important than SMART status in this case), try the cciss_vol_status script.