18
Designation
Description
1
SAS expansion ports
2
SAS expansion port Status LED
3
Controller Status LED
WARNING
The only time you should remove the controller is to replace a failed controller. The
controller is built of sensitive components and unnecessary tampering can
damage the controller.
Super Capacitor & Flash Backup Module
The super capacitor
(1)
and flash backup module
(2)
can be located inside the controller and serves
as a Cache Backup Module (CBM) described in the previous section. With the super capacitor, the
cached data can be stored permanently in the flash backup module, in case of a power outage.
NOTE
The super capacitor is only charged partially when shipped. Therefore, after
powering on the system, the super capacitor will start charging to its full capacity.
The super capacitor will be charged within a few minutes. If the super capacitor is not
charged, there may be a problem with the supercapacitor and you should contact
your system vendor immediately. You can also check the status of the super
capacitor module via the PAC Management Software or the firmware (please refer to
respective manuals).
