We have SNMP with version 2 and 3 and we comply with MIB II standards.
Net-SNMP package in our software supports disk I/O statistics via
ucd-snmp/diskio module, so there is possibility to get this
information via SNMPv3 or SNMPv2 using Nagios monitoring system. The others should be out there for MIB II standards that are on the net.

Also we have in our GUI STATUS -> hardware -> Function: Hardware monitoring feature to view the CPU and Fans and tempuature. This is enabled from the Console screen by entering in CTRL ALT W then Hardware options to select the correct system for HP you might have to test IMPI or LMSensors.

This function monitors hardware. To enable it, you need to access the Hardware
Configuration tool in the console followed by Hardware options (press F1 in the console to
list keyboard shortcuts).

When using the LmSensors hardware mode you can find information on the following
parameters here:

* motherboard temperature,
* CPU temperature,
* chipset temperature,
* Vcore,
* fan rotation speed.

some other useful basics that Greg did....

http://www.fishbowlnetwork.com/MIB.doc