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3.1 Types of Maintenance


3.1 Types of Maintenance
The types of FRU maintenance are classified according to the operation status of the physical partition (PPAR) and the hot/cold status of the SPARC M12-2/M12-2S.
Classification by physical partition (PPAR) operation status
The types of maintenance have the following three classifications according to the operation status of the physical partition (PPAR) to which the FRU requiring maintenance belongs:
  1. Active maintenance
    Maintenance is performed on a FRU while the physical partition to which the FRU belongs is operating.
  2. Inactive maintenance
    Maintenance is performed on a FRU while the physical partition to which the FRU belongs is stopped.
    Inactive maintenance applies to a system with two or more partitions in a multiple-BB configuration only.
    Therefore, regarding the SPARC M12-2 and also the SPARC M12-2S with the 1BB configuration, the type of maintenance performed with the physical partition stopped is system-stopped maintenance, not inactive maintenance.
  3. System-Stopped maintenance
    Maintenance is performed with all physical partitions stopped.
Classification by the hot/cold status of the SPARC M12-2/M12-2S
Maintenance is classified into the following two types according to the hot/cold status of the SPARC M12-2/M12-2S that has the FRU requiring maintenance mounted in it:
  1. Hot maintenance
    Maintenance is performed when the SPARC M12-2/M12-2S that has the FRU requiring maintenance mounted in it is in the hot state.
  2. Cold maintenance
    Maintenance is performed when the SPARC M12-2/M12-2S that has the FRU requiring maintenance mounted in it is in the cold state.
By combining the above classifications, the six types of maintenance shown in Table 3-2 are available for the SPARC M12-2/M12-2S.
Table 3-2  Types of Maintenance
PPAR Operation Status Hot/Cold Status of SPARC M12 Chassis
With Mounted FRU Requiring Maintenance
Type of Maintenance
The PPAR to which the FRU requiring maintenance belongs is operating. Hot Active/Hot maintenance
Cold Active/Cold maintenance
The PPAR to which the FRU requiring maintenance belongs is stopped. Hot Inactive/Hot maintenance
Cold Inactive/Cold maintenance
All PPARs in the system are stopped. Hot System-Stopped/Hot maintenance
Cold System-Stopped/Cold maintenance
Use the maintenance menu when performing maintenance work.
However, system-stopped/cold maintenance has the following two types of maintenance work:
  1. Maintenance using the maintenance menu when only the SPARC M12-2S requiring maintenance is in the cold state
  2. Maintenance without using the maintenance menu when every SPARC M12-2/M12-2S is in the cold state
Table 3-3 lists the characteristics of each type of maintenance viewed from three aspects: system availability, the time required for maintenance, and the difficulty level of maintenance work.
Table 3-3  Characteristics of Each Type of Maintenance
Type of Maintenance System Availability Time Required for Maintenance Difficulty Level of Maintenance Work
Active/Hot maintenance Higher Shorter Higher
Active/Cold maintenance | | |
Inactive/Hot maintenance | | |
Inactive/Cold maintenance | | |
System-Stopped/Hot maintenance | | |
System-Stopped/Cold maintenance Lower Longer Lower
Table 3-4 shows the applicability of each type of maintenance according to the model and system configuration.
Table 3-4  Applicability of Types of Maintenance by Model/Configuration
-: Not applicable
Model or Configuration Active Maintenance Inactive Maintenance System-Stopped Maintenance
Hot Cold Hot Cold Hot Cold
SPARC M12-2 OK - - - OK OK
SPARC M12-2S (1 BB configuration) OK - - - OK OK
SPARC M12-2S (multiple-BB configuration) OK OK OK OK OK OK
However, the types of maintenance actually applicable are narrowed down depending on the FRU requiring maintenance and the purpose of maintenance (replacement, expansion, or reduction). For details, see the section below corresponding to your model and configuration: