17
The controller also features a
Cache Backup Module
(CBM), consisting of a
super
capacitor
and a
Flash Backup Module
(FBM).
NOTE
The management port supports only 100Mb and 1000Mb (1Gb) speeds.
Host boards are optional add-on components! There are two host board slots, if you
are installing a host board for the first time, please install it to the slot on the left (next
to SAS exp. Ports).
WARNING
The controller module contains no user-serviceable components. The only time you
should remove the controller is to install/ replace the CBM or a failed controller. The
controller is built of sensitive components and unnecessary tampering may damage
the controller.
Controller Module of Expansion Enclosures
The expansion controller contains a circuit board within a metal canister, interfaced through
hot-swap docking connectors at the back-end. Three SAS wide ports on the interface
faceplate connect to a managing Unified Storage System or other expansion enclosures.