Справочник Пользователя для Infortrend A12U/A08U-G2421

Chapter 5: System Maintenance 

•  The controller module contains a DIMM module.  It is not recommended to re-

use the DIMM module extracted from a failed controller unless you have a 

similar RAID subsystem that can be used to test the module.  You can contact 

your vendor for sending the failed controller in for repair.   

•  When replacing the controller module, it must be remembered that the controller 

board is one of the most sensitive components in the subsystem. All previously 

stipulated safety precautions (see Chapter 2) must be strictly adhered to. Failure 

to adhere to these precautions can result in permanent damage to the controller 

board, resulting in lengthy delays.  

•  Prior to replacing the controller module, it is imperative for your own safety to 

be sure no power is being supplied to the system. 

To remove the controller module: 

 

Step 1.  Stop host I/Os or host applications to avoid losing data or causing 

data inconsistency.  

 

Step 2.  Turn the subsystem power off: If possible power off the subsystem in 

the way described in Chapter 4.  If it is not possible to do this turn off 

both PSU modules and disconnect the power cords.  

 

Step 3.  Disconnect all cables: There may be a number of different cables 

attached to the controller module. These cables could include SCSI 

cables for host connections, an RS-232C (audio jack) cable for serial 

port connection, and an Ethernet cable for network connection. Prior 

to removing the controller module, all these cables should be 

removed. 

 

Step 4.  Loosen the retention hand screws: Hard screws are located on both 

sides of the RAID controller’s faceplate.  Press these screws and use a 

Phillips screwdriver to loosen them so that the controller can be 

removed from chassis.  (See Figure 5- 1)