HP A9890A Smart Array 6400 Series Controllers for Integrity Servers User Guide - Page 6

Expansion module components An expansion module is used to add two extra external channels to an SA6402 controller, converting it to an SA6404 controller. Item ID 0-7 8 9 10 Description Runtime LEDs (CR10-CR17). These are identical to the controller board runtime LEDs (on page 30). VHDCI connector, port B2 VHDCI connector, port B1 Connector to controller board The expansion module is a controller in its own right. Thus, the SA6404 controller is actually two 2channel controllers sharing one PCI-X connector. This arrangement is referred to as a dual (or twin) controller configuration. During POST, each component controller loads its own instance of the required driver and sets its own configuration using ORCA. The dual controller is displayed in both Systems Insight Manager and ACU as two separate entities in one slot. In these utilities, the slot number label for the expansion module has a lowercase b suffix, while the slot number label for the main controller has no suffix. NOTE: When an expansion module is installed, the capacity of the battery-backed write cache on the main board is divided equally between the expansion board and the main board. For more information, refer to customer note CN0316W on the HP website (http://www.hp.com). Controller specifications and attributes Dimensions (excluding bracket) Power required Ambient room temperature range Relative humidity (noncondensing) 31.2 cm x 10.7 cm x 1.8 cm (12.3 in x 4.2 in x 0.7 in) Typically 12-18 W Operating: 10° to 35°C (50° to 95°F) Storage: -20° to 55°C (-4° to 131°F) Operating: 10% to 70% Storage: 5% to 90% Hardware features 6