Falcon 24 Dual Fibre Installation and Hardware Reference Manual
The controller module faceplate is shown in
Figure 1-8
and has two (2) RS-232C
(audio jack) serial ports (labeled
COM1
and
COM2
); one (1) RJ-45 Ethernet
connector and five (5) status-indicating LEDs (labeled from 1 to 5). The controller
board is housed in a metal canister and can only be seen after the controller module
has been removed from the subsystem enclosure. The controller canister has two (2)
ejector levers that secure the controller module to the subsystem chassis. These levers
are, in turn, secured to the enclosure chassis with two (2) retention screws.
1.2.4 Controller Module Interfaces
All management interfaces that connect to external devices are located on the
controller module faceplate. The host I/O paths are routed through a common
backplane to the host I/O modules. The interfaces are listed below.
RS-232C (Audio Jack)
: All controller modules come with two (2) RS-232C
(audio jack) serial ports. The serial ports can be used for terminal emulation
and uninterruptible power supply (UPS) support.
Ethernet port
: A single 10/100BaseT Ethernet port is used for remote
management through a TCP/IP network.
Disk Drive Channels
: All models come with twenty-four (24) SATA drive
channels that are connected to the backplane through back-end connectors.
(
NOTE:
Drive interfaces are not accessed through the controller module
faceplate.
)
1.2.5 DIMM Module
Each controller module comes with a preinstalled 512MB DDR RAM DIMM
module mounted on the controller board within a metal chassis. The controller
module supports memory modules with sizes from 512MB to 2GB.
1.2.6 BBU Module
Part Number:
IFT-9274CBT-C (Hot-replaceable battery cell pack)
The Li-ION BBU module, shown in
Figure 1-9
, comes standard on Falcon II. The
BBU can sustain cached data for days during a power failure. The use of a BBU is
highly recommended in order to ensure data integrity. If power outage occurs, the
BBU supplies power to sustain the unfinished writes in cache memory.
1-8
Subsystem Components
