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Table 10-1
Types of maintenance for the power supply unit
Configuration Active/hot Active/cold Inactive/hot Inactive/cold (*1) System stopped
Single-chassis configuration
Supported Unsupported Supported Supported Supported
Build in g block confi g u rat io n
Supported (*2) Supported (*3) Supported Supported Supported
*1: For a single-chassis configuration, the inactive/cold maintenance procedure is the same as that for stopping the system, therefore see
the procedure for system-stopped maintenance.
*2: Active/hot replacement can be performed only with a redundant configuration.
*3: It is necessary to use dynamic reconfiguration (DR) to disconnect a chassis requiring maintenance from the physical partition.
Table 10-2
Maintenance flow
Details of update process Replacement
1 Preparation 10.3
2 Removing a power supply unit 10.4
3 Installing a power supply unit 10.5
4 Restoring the system 10.6
definition of maintenance, see "4.3 Understanding Types of Maintenance."
10.2.2 Maintenance flow
Table 10-2 lists the sequence of the maintenance procedure for the power supply
units.
10.2.3 Precautions for replacement
Note the following points when replacing a power supply unit:
■
There are two power supply units. Thus, the system can continue operating even
if one of the units fails. Do not, however, operate the system for an extended
period while one unit has failed.
■
When replacing multiple power supply units, replace one unit at a time. If
redundancy of the power supply unit cannot be assured, then system-stopped
maintenance must be performed.
■
Do not force push the power supply unit into its slot. Using excessive force may
damage the component or the chassis.
Chapter 10 Maintaining the Power Supply Units 193