Bosch DVA-08K User Manual

en | Hardware Installation 

RAID Subsystem DVA-08K | Installation Manual

F.01U.027.797 | V2 | 2008.08

Bosch Security Systems

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Be sure the correct power range (100-120 or 220-240VAC) is supplied by your rack cabi-

net, UPS device, or power outlet. 

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Thermal notice: All drive trays (even if they do not contain a hard drive) must be installed 

into the enclosure. Leaving a drive bay or module slot open will severely affect the airflow 

efficiency within the enclosure, and will consequently lead to system overheating. Keep a 

faulty module in place until you have a replacement unit and you are ready to replace it. 

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An enclosure without disk drives can weigh over 25 kilograms. Two (2) people are 

required to install or relocate the subsystem. To avoid damage to disk drives, drives 

should be removed from the enclosure before moving the subsystem. 

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Handle the system modules by the retention screws, extraction levers, or the modules 

metal frames/faceplates only. Avoid touching the PCB boards, connector pins, and sol-

dered surfaces. 

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Airflow considerations: The subsystem requires an airflow clearance especially on the 

front and rear. For proper ventilation, a minimum of 2.5cm is required between the front 

of the enclosure and rack cover; a minimum of 5cm is required between the enclosure 

and end of the rack. 

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None of the covers or replaceable modules should be removed in order to maintain com-

pliance with safety, emission, or thermal requirements.

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Always secure every enclosure module by its retaining screws or make sure it is held in 

place by its latches.

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Always make sure the subsystem has a safe electrical earth connection via power cords 

or chassis ground by the rack cabinet.

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Be sure that the rack cabinet in which the subsystem chassis is to be installed provides 

sufficient ventilation channels and airflow circulation around the subsystem.

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Provide a soft, clean surface to place your enclosure on before working on it. Servicing 

the enclosure on a rough surface may damage the finish of the chassis.

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If it is necessary to transport the subsystem, repackage all disk drives separately. If using 

the original package material, all other modules can stay within the enclosure. 

The subsystem contains static-sensitive electronic components that can be damaged by 

improper handling and electrostatic discharge (ESD). To prevent ESD damage to any of the 

components, follow these precautions before touching or handling them:

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Discharge the static electricity from your body by wearing an anti-static wristband or by 

touching a grounded metal surface.

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Avoid carpets, plastic, vinyl, and styrofoam in your work area.

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Handle all components by holding their edges or metal frame. Avoid touching PCB boards 

and connector pins.

The BBU module sustains cache memory in the event of a power failure or in the unlikely event 

if both PSUs have failed. Having the protection to cached data by a BBU is highly recom-

mended. The BBU provides additional data security and helps minimize the chance of data 

loss during power outage.

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Replace the BBU once it shows symptoms failing to hold the charge. Although the life 

expectancy of a BBU is determined by the times it has been charged or discharged, a BBU 

can approximately last for one year. If the battery recharge time is obviously longer than 

the suggested 12 hours, or if the fault LED is lit, replace the battery.