HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 Service Manual (A5 - Page 204
Controller Firmware Components, Auto Code Synchronization ACS
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preserved. If the number is already in use on the array, a new number will be assigned. The next lowest available number will be used. Controller Firmware Components The disk array controller firmware includes three components: • Bootware - executed when the unit is powered on, this code tests controller functions and begins execution of the firmware. Bootware is stored in • Firmware - manages the operation of the controller. • NVSRAM - contains configuration settings that control the operating characteristics of the disk array. Each version of controller firmware includes specific versions of each of these components. For proper disk array operation, the three component versions must match. When replacing or troubleshooting a controller, you should understand how the three firmware components are managed by the disk array. This will ensure that you have the correct versions of the firmware on each controller. Auto Code Synchronization (ACS) ACS is a feature that ensures that the firmware versions on both disk array controllers match. ACS is performed during the controller Start-Of-Day (SOD) process, if it is determined that the firmware versions on the two controllers do not match. During ACS the bootware and firmware versions are synchronized.The controller NVSRAM settings are not updated during the ACS process ACS occurs when a resident controller is replaced by a foreign controller. For example, if controller B is replaced, the new controller will be recognized as foreign. During the SOD process initiated after installing the controller, the firmware on controller B will checked against the firmware on controller A. If the firmware versions differ, the firmware will be copied from controller A to controller B. ACS occurs only during the SOD process that occurs when the disk array is powered on, or when a controller is replaced. ACS does not occur on resets. If both controllers are replaced with power off, both appear as foreign when the disk array is powered on. In this 204 Moving a Volume Group from One Disk Array to Another