IBM TotalStorage SAN256N Director 2045-N16, Руководство по установке и обслуживанию

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© Copyright IBM Corp. 2004
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Chapter 5. Hardware maintenance procedures
This chapter contains information about SAN256N director hardware maintenance,
including the following:
• “Preventive maintenance” on page 75
• “Fiber optic maintenance” on page 75
• “Tools and Test Equipment” on page 76
• “Field Replaceable Units (FRUs)” on page 76
• “Field Replaceable Units (FRUs)” on page 76
• “FRU removal and replacement procedures” on page 78
Preventive maintenance
There is no scheduled preventive maintenance required for the SAN256N director.
During regular service calls, always:
• Verify that the perforated floor tiles at the front and back of the SAN256N chassis and/
or cabinet are free and clear of dust and dirt; clean, as necessary, to remove any dust
or dirt, which may have accumulated.
• Inspect to ensure that each of the power supply assembly’s grids are free and clear of
dust and dirt; clean, as necessary, to remove any dust or dirt, which may have
accumulated.
• Verify that the fan module assembly’s grids, especially the EMI screen located behind
the upper fan assemblies, are free of dust and dirt; clean, as necessary, to remove
any dust or dirt, which may have accumulated.
• Inspect, on a random basis, the various modules, especially around the heat sink
components, to ensure that the modules and their components are free of dust and
dirt; clean, as necessary, to remove any dust or dirt, which may have accumulated.
Fiber optic maintenance
The ferrules and end-face surfaces of fiber components must be kept clean and free of
contamination. Dirty fiber connectors are a common cause of light loss. As a general
rule, whenever there is a significant, unexplained light loss, clean the connectors.
The following cleaning guidelines should be adhered to when cleaning fiber connectors:
• Use extreme care when removing or installing connectors so that you do not damage
the housing or scratch the end-face surface of the fiber.
• Always install protective covers on unused or disconnected components to prevent
contamination.
• Always clean fiber optic connectors before installing them.
Refer to “Cleaning the connectors” on page 58 in Chapter 3 of this manual for detailed
cleaning instructions.