HP IO Accelerator for BladeSystem c-Class - Manual (Page 19)

Monitoring and managing devices 19
Example conditions to monitor
This section provides examples of conditions you can monitor. It is intended as an introduction and not as a
comprehensive reference. These conditions have slightly different names, states, and values, depending on
the tool you choose. For example, an SNMP MIB might have a different name than a SMI-S object or an API
function.
To properly monitor these conditions, you should become familiar with the tool you choose to implement and
read the documentation for that tool.
The possible states and values of these conditions are:
• GREEN: Normal
• YELLOW: Caution/Alert
• RED: Error/Warning
You can implement your own ranges of acceptable states/values, especially if you use a data-source tool.
Device status
All of the monitoring tools return information on the status of the IO Accelerator devices, including the
following states:
• GREEN: Attached
• YELLOW: Detached, Busy (including: Detaching, Attaching, Scanning, Formatting, and Updating)
• RED: Minimal Mode, Power loss Protect Disabled
If the device is in Minimal Mode, the monitoring tool can display the reason for the Minimal Mode status.
Required actions
If the device is in Minimal Mode, the action depends on the reason. For example, if the reason is outdated
firmware, then you must update the firmware.
Temperature
IO Accelerator devices require adequate cooling. To prevent thermal damage, the IO Accelerator VSL starts
throttling write performance after the on-board controller reaches a specified temperature. If the controller
temperature continues to rise, the software shuts down the device after the controller temperature reaches the
maximum operating temperature.
These temperatures depend on the device. Newer IO Accelerator devices have higher thermal tolerances.
Consult the IO Accelerator hardware installation guide to determine the thermal tolerances of all devices you
will monitor. This list uses the thermal tolerances for newer devices (93°C throttling, 100°C shutdown).
• GREEN: <93°C
• YELLOW: 93-99°C
• RED: 100°C
You can shift the conditions by a few degrees so the YELLOW condition exists before throttling occurs. For
example:
• GREEN: <90°C
• YELLOW: 90-96°C
• RED: 97°C