Hitachi CBL, Hardware Service Manual

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Procedures before and after replacing components
3–3
Hitachi Unified Storage Hardware Service Guide
Unpacking replacement components
Unpack replacement components in a dry location that is not exposed to
moisture, direct sunlight, dust, and temperature extremes. If the part to be
added has been exposed to high or low temperature during transport, the
part might not operate properly.
Follow appropriate power on/off work procedures
If a replacement procedure requires power off and power on steps, follow
the steps carefully to ensure the security of data.
After powering off the storage system, remove the power cables from the
two Power Units on the storage system.
Safety considerations
Observe the following guidelines to ensure safety when replacing parts.
Failure to follow these guidelines could result in bodily injury or damage to
the chassis or components.
• Use the host to back up user data on the storage system before
replacing components.
• When performing any installation, comply with all local health and
safety requirements.
• Wear protective footwear when moving storage system hardware.
• Do not wear loose clothing that could get caught in the chassis or
mounting hardware. Fasten ties and scarves and roll up sleeves.
• Wear safety glasses when working under conditions that are hazardous
to your eyes.
• Keep walkways clear of tools, cables, and parts to prevent them from
being stepped on or causing people to trip and fall.
• Do not work on the equipment or disconnect cables during a
thunderstorm, when wearing a wool sweater or other heavy wool
clothing, or when power is applied.
• Always turn off the storage system and unplug all data and power
cables before lifting the storage system.
• Keep floors dry to prevent slips and falls.
• Do not use ungrounded power cables.
• Only use the power cables supplied with this product. Do not use power
cables for other products. Otherwise, unexpected failures or accidents
can occur.
• If you encounter unusual odors, heat generation, or smoke emission,
shut off power to the equipment and inform the appropriate personnel
Leaving such conditions unattended can cause electric shock or fire.
• Keep the area clean and dust-free when replacing components.