EonStor DS S12/S16/S24 Series Hardware Manual
1.4
Rear Panel Components
1.4.1
Controller Module of RAID Models
SAS
expansion
Port
Controller
LEDs
Serial
Port
Ethernet
Management
Port
Restore
Default
Button & LED
Convection
Holes
Host Ports
Host Ports
(For some
models)
The RAID controller module contains a main circuit board, an interface faceplate, a
cooling module bay, and a pre-installed DDRII DIMM module. The controller on the
dual controller model also features a CBM, consisting of a BBU and flash backup
module. The CBM and its components might be optional items. See
1.4.2 Controller
Module of JBOD Models
for details.
The controller module contains no user-serviceable components. Except when
installing/upgrading the cache memory or installing/replacing a CBM, the controller
module should never be removed or opened.
WARNING
Although the RAID controller can be removed, the only time you should touch the
controller itself is to install/replace the memory modules or CBM. The RAID controller
is built of sensitive components and unnecessary tampering can damage the
controller.
Docking connectors:
The FCI docking connectors at the rear of the controller
mate the main circuit board with the backplane.
Ejection levers:
Two ejection levers on the sides of the module help installing
and retrieving the controller.
Host ports:
Connects to host computers. See
1.4.3 Host Port of RAID Models
for
details.
COM1:
Each controller module comes with one serial COM port. The
COM1
port
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