10 en Introduction | RAID Subsystem |
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The rear panel shown in Figure 2.5 accommodates the following components:
•RAID controller module: A controller board and a DDR RAM DIMM module are housed in the controller module to provide the system RAID functionalities. (See Section 2.3.3 The RAID Controller Module)
•BBU module: An BBU module sustains cache memory during a power shortage to prevent data loss. (See Section 2.3.6 BBU)
•PSU modules: The
Section 2.3.7 Power Supply Units)
•Cooling modules: The redundant cooling modules ventilate the subsystem to reduce the temperature within the subsystem. (See Section 2.3.8 Cooling Modules)
2.2.5 | Backplane Board |
| An internal backplane board separates the front and rear sections of the RAID subsystem. The |
| PCB board consists of traces for logic level signals and low voltage power paths. It contains |
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| CAUTION! |
| When inserting a removable module, DO NOT USE EXCESSIVE FORCE! Forcing or slamming a |
| module can damage the pins on the module connectors either on the module itself or on the |
| backplane. Gently push the module until it reaches the end of module slot. Feel the contact |
| resistance and use slightly more pressure to ensure the module connectors are correctly |
| mated. If the module comes with reject levers or retention screws, use them to secure the |
| module. |
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2.3 | Subsystem Components |
| The RAID subsystem houses many active components and most of them can be accessed |
| through either the front or rear panel. The modular design of the active components facilitates |
| their easy installation and removal. |
| power surges and signal glitches that might occur while removing or installing these modules. |
2.3.1 | Front Handles |
Fig. 2.6 Handles
A left and a right handle are installed on the front side of the chassis. Each handle has a release latch to secure the position of the handle when closed. (See Figure 2.6) To access drive bays in the left or right column behind the handles, first flip the release latch on the enclosure front handles, and then swing the handles to the left and right sides, respectively. (See Figure 2.7) To close the handles, swing the handles toward the system; gently press the handles until a click is heard. The latches will keep the handles in place.
F.01U.027.798 V1 2006.06 | Bosch Security Systems |