Important considerations
•If you are installing more than one dual IO Accelerator device and enabling the override parameter for each device, be sure the motherboard is rated to provide 55W power to each slot used. For example, some motherboards safely provide up to 75W to any one slot, but run into power constraints when multiple slots are used to provide that much power. Installing multiple devices in this situation might result in server hardware damage. Consult with the manufacturer to determine the total PCIe slot power available.
•The override parameter persists in the system and enables full power draw on an enabled device even if the device is removed and then placed in a different slot within the same system. If the device is placed in a slot that is not rated to provide 55W of power, your server hardware could experience a power drag.
•The override parameter is a setting for the IO Accelerator VSL software by server and is not stored in the device. When moved to a new server, the device defaults to the 25 W power limit until an external power cable is added or the override parameter is enabled for that device in the new server. To determine the total PCIe slot power available for the new server, consult the manufacturer.
Enabling the override parameter
1.Use one of the following methods to determine the serial number of each device to be installed in a compatible slot.
oEnter the
...
Adapter: Dual Controller Adapter
External Power: NOT connected
PCIe Power limit threshold: 24.75W Connected ioMemory modules: fct2:
fct3:
In this example, 1149D0969 is the adapter serial number.
If you have multiple IO Accelerator devices installed on your system, use the
oInspect the adapter serial number labels on the IO Accelerator devices to determine the serial numbers. However, HP recommends confirming that each serial number is an adapter serial number by running the
2.Set the module parameter using the
'external_power_override=<value>'
Where the <value> for this parameter is a
Maintenance 24
