12
en | Introduction
RAID Subsystem DVA-16K | Installation Manual
F.01U.027.799 | V2 | 2008.08
Bosch Security System
2.4.4
Hard Drive Numbering
The front panel of the RAID subsystem enclosure houses sixteen (16) hard drives in a 4x4 con-
figuration as shown in
Figure 2.5
. When viewed from the front, the drive bays (slots) are num-
bered 1 to 16 from left to right, from top to bottom.
Fig. 2.5
Hard Drive Numbering
2.4.5
Rear Panel Overview
The rear section of RAID subsystem is accessed through the rear panel and is reserved for a
single RAID controller module, one (1) BBU, two (2) power supply units (PSUs) and two (2)
cooling modules.
The rear panel of the RAID subsystem described in this manual is shown in
Figure 2.6
. A
description of each rear panel component is given below:
Fig. 2.6
RAID subsystem Rear View
The rear panel shown in
Figure 2.6
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 2.5.3 The
RAID Controller Module
)
•
BBU: A BBU sustains cache memory during a power shortage to prevent data loss. (See
Section 2.5.6 Battery Backup Unit (BBU)
)
•
PSUs: The hot-swappable PSUs provide power to the subsystem. A power switch is
located on the right of each PSU to turn the system on and off. (See
Section 2.5.7 Power
Supply Units
)
•
Cooling modules: The redundant cooling modules ventilate the subsystem to reduce the
temperature within the subsystem. (See
Section 2.5.8 Cooling Modules
)
•
Dummy plate: This device is a single controller subsystem. The only controller module is
installed in the upper controller bay. A dummy plate covers the lower controller bay at
the rear of the subsystem.
2.4.6
Backplane Board
Internal backplane boards separate the front and rear sections of the RAID subsystem. The
PCB board provide logic level signals and low voltage power paths. They contain no user-ser-
viceable components.
Summary of Contents for DVA-16K SCSI
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