Installing and Configuring Hardware 63Transferring a TBBU or TNVC Between PERCH800 CardsThe TBBU or TNVC provides uninterrupted power supply for up to 48 hoursto a cache memory module. If the controller fails as a result of a power failure,you can move the TBBU or TNVC to a new controller and recover the data.The controller that replaces the failed controller should not have any priorconfiguration.Perform the following steps to replace a failed controller with data in theTBBU:1 Perform a controlled shutdown on the system in which the PERC H800 isinstalled, as well as any attached storage enclosures.2 Disconnect the system from the electrical outlet and remove the systemcover.3 Remove the controller that has the TBBU or TNVC.4 Remove the TBBU or TNVC from the controller.5 Insert the TBBU or TNVC in the new controller.For more information on installing the TBBU or TNVC, see "Installing theTBBU or TNVC on a PERC H800 Adapter" on page 61.6 Insert the replacement controller in the system.See the relevant sections on installing controllers under "Installing thePERC H700 and H800 Adapters" on page 41.7 Reconnect all external storage enclosures as they were originally connectedand turn on the enclosures.8 Replace the system cover, re-connect the system to the electrical outletand turn on the system.The controller flushes the cache data to the virtual disks.
