Infortrend A12U/A08U-G2421 User Manual download pdf (Page 29)

Chapter 2: Installation

6. None of the covers or replaceable modules should be removed in order to

maintain compliance with safety, emission, or thermal requirements.

7. Always secure every enclosure module by its retaining screws or make sure it is

held in place by its latches.

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

cords or chassis ground by the rack cabinet.

9. 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.

10. 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.

11. 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.

2.3.2 Static-Free Installation

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:

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

wristband or by touching a grounded metal surface.

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

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

PCB boards and connector pins.

2.3.3 BBU Warnings and Precautions

The BBU module is an optional item that can sustain 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 recommended. The BBU provides

additional data security and helps minimize the chance of data loss during power

outage.

• 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.

Safety Precautions

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Infortrend A12U/A08U-G2421 User Manual Page 29