Bosch DVA-12T Installation Manual Page 12

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12 en | Introduction RAID Subsystem DVA-12T | Installation Manual
F.01U.027.798 | V1 | 2006.06 Bosch Security Systems
2.3.4 Controller Module Interfaces
All external interfaces that connect to external devices are located on the controller module
rear panel shown below. The interfaces are listed below.
Fig. 2.9 Controller Module Interfaces – 2-port version
Host ports: Two (2) Gigabit Ethernet host ports (simulated and
indicated as CH0 and CH1 in the diagram shown above) connect the RAID subsystem to
the networked iSCSI initiators through two (2) RJ-45 connectors.
COM port: The controller module comes with one (1) COM port.
This port is used for local access to the firmware embedded
configuration utility from a management computer.
LED indicators: Five (5) LED indicators illustrate the system
statuses for system monitoring. Please see Section 4 Subsystem Monitoring for more
information.
Hand screws: Two (2) hand screws located in the sides of the controller rear panel pro-
vide easy controller module installation and secure the controller module in place.
2.3.5 DIMM Module
The controller module comes with a preinstalled 1 GB capacity or above DDR RAM DIMM mod-
ule. The DIMM module is placed in an easily accessed location on the controller board. How-
ever, when the DIMM module is being changed, the controller module must be removed from
the subsystem chassis.
2.3.6 BBU
An Li-ION battery backup unit (BBU) module (see Figure 2.10) can sustain cache memory for
days after a power failure. If you purchased a BBU, it will be installed on the upper left side of
the controller module in the rear of subsystem chassis.
Fig. 2.10 BBU Module
In accordance with international transportation regulations, the BBU module is only charged
to between 35% and 45% of its total capacity when shipped. Therefore, when powering on the
subsystem for the first time (see Section 5.3 Power On) the BBU will begin to charge its batter-
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