EonStor F16F-R/S4031-6/4 Installation and Hardware Reference Manual
1.2.3 The RAID Controller Module
Figure 1-17: RAID Controller Module
PN: IFT-83F40REC6 (for 6-channel models) & IFT-83F40REC4 (for 4-
channel models)
The RAID controller module contains a main circuit board, a rear-facing
faceplate, and a DIMM socket for DDR cache memory. The default size of
cache memory is 512MB. (See
Figure 1-17
)
The controller contains no user-serviceable components. Except when
installing/upgrading the cache memory inside, 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/upgrade the memory module. The
RAID controller is built of sensitive components and unnecessary
tampering can damage the controller.
FC speed detection:
Host side
:
The subsystem supports host side connection either at 4Gb/s or
2Gb/s speed. There is a DIP switch that can be used to change the channel
speed on the rear panel.
Drive side
:
The subsystem supports either 2Gb/s or 4Gb/s Fibre Channel
disk drives. There is a DIP switch that can be used to change the channel
speed on the rear panel.
CAUTION!
Do not mix 4Gb and 2Gb disk drives in a dual-loop consisting of two
drive channels!
Installing 4Gb disk drives in a dual-loop (e.g., CH2 and CH3), and
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System Components
