EonStor U16U Installation and Hardware Reference Manual
5-8
Controller Module Maintenance
Step 9.
Connect the BBU to the Charger board –
Connect the BBU cable to the
connector on the charger board.
Step 10.
Install the controller module
– Once new BBU has been installed in to the
controller module, insert the controller module into the controller bay at the rear
of the subsystem. Once the controller module has been completely inserted into
the ES U16U enclosure, close the controller rear flap and tighten the hand
retention screw.
Step 11.
Connect the Controller Module Cables
– Connect all of the cables that were
previously disconnected from the controller module. These may include SCSI
cables for host connection, RS-232C cable for serial port connection and an
Ethernet cable for LAN connection.
Step 12.
Power On
– Once the new controller module has been properly installed and the
cables have been correctly connected. Power Up the subsystem.
5.3.5 DIMM
Module
Replacement
If a DIMM module fails or a DIMM module with a higher memory capacity is required,
the onboard DIMM module must be replaced.
♦
Failed DIMM module
– If a DIMM module has failed, prior to removing the
controller module both PSU modules must be turned off and all the cables
connected to the controller must be disconnected.
♦
DIMM module replacement
– If a DIMM module is going to be replaced, prior to
removing the controller module make sure that the subsystem is correctly powered
down and all the cables connected to the controller must be disconnected.
NOTE:
When replacing a DIMM, the whole subsystem needs to be powered down therefore,
when replacing a DIMM a user should carefully select the time at which the
replacement is made to minimize the overall disruption to the service.
♦
Replacing the DIMM Module
– Complete illustrated instructions on how to
replace a DIMM module have been given in
Chapter 2
, please refer to
Section 2.6
.
NOTE:
When replacing a DIMM, if a BBU and a BBU charger board have been installed,
they both need to be removed first.
5.3.6 Controller Board and Host IO Board Maintenance
Both the controller board and the host IO board are not user serviceable. If either of these
boards are damaged in any way the subsystem will not be able to run and the whole
controller module will need to be replaced. When replacing a controller module, if the
DIMM module and the optional BBU module (if installed) are undamaged, they must be
