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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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