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  9. Chapter 3 Understanding the Types of Maintenance

Chapter 3 Understanding the Types of Maintenance


Chapter 3 Understanding the Types of Maintenance
There are several types of maintenance on the field replaceable units (FRUs) of the SPARC M12.
This chapter first describes the types of maintenance and then describes, by model, which types of maintenance are applicable to each FRU. The maintenance work procedure varies depending on the type of maintenance. Before starting maintenance work, fully understand the features of each type of maintenance so as to determine the type to apply.

For specific work procedures corresponding to the types of maintenance, see "Chapter 4 FRU Replacement Workflows," "Chapter 5 FRU Addition Workflows," and "Chapter 6 FRU Removal Workflows."
Table 3-1 defines the terms used in this and subsequent chapters.
Table 3-1  Definitions of Terms
Term Definition
Physical partition requiring maintenance Physical partition to which the SPARC M12-2/M12-2S belongs that has the FRU requiring maintenance mounted in it
SPARC M12-2/M12-2S requiring maintenance SPARC M12-2/M12-2S chassis with the FRU requiring maintenance mounted in it
BB configuration Building block configuration
A configuration consisting of one SPARC M12-2S unit is referred to as the 1BB configuration. A configuration consisting of two SPARC M12-2S units is referred to as the 2BB configuration. And a configuration consisting of multiple SPARC M12-2S units is referred to as the multiple-BB configuration.