HP StorageWorks 1000 HP StorageWorks 1000 Modular Smart Array reference guide - Page 18

MSA1000 Hardware Components MSA1000 Controller The MSA1000 Controller is a drive array controller specifically designed for installation in the MSA1000. The MSA1000 comes equipped with one Controller installed. An additional controller for redundancy can be purchased separately. To ensure uninterrupted service, two copies of the controller firmware are stored in Read Only Memory (ROM) on the controller. Additional information about the following topics is included in this section: ■ MSA1000 Controller Display ■ Array Accelerator (Battery-backed Cache) ■ Array Configuration Overview MSA1000 Controller Display Each array controller in an MSA1000 contains an integrated Liquid Crystal Display (LCD). This module is used for displaying informational and error messages, showing the status of the module, and for providing user input when required. Traditional Power-On Self-Test (POST) messages issued by PCI-based array controllers have been combined with runtime event notification messages to create a new set of controller display messages. The following figure and supporting table illustrate and define the features of the MSA1000 controller display panel. 18 HP StorageWorks 1000 Modular Smart Array Reference Guide