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Table 18-1
Types of maintenance for the power supply unit
Configuration Active/hot Active/cold Inactive/hot Inactive/cold System stopped
Build in g block confi g u rat io n
Supported (*1) Unsupported
(*2)
Supported Unsupported
(*2)
Supported (*3)
*1: Active/hot replacement can be performed only with a redundant configuration.
*2: If any physical partition is currently operating, the crossbar box cannot be powered off.
*3: All the physical partitions must be powered off, and the system must be completely shut down.
Table 18-2
Maintenance flow
Details of update process Replacement
1 Preparation 18.3
2 Removing a power supply unit 18.4
3 Installing a power supply unit 18.5
4 Restoring the system 18.6
18.2.2 Maintenance flow
Table 18-2 lists the sequence of the maintenance procedure for the power supply
units.
18.2.3 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. If excessive force is applied,
other components or the chassis may be damaged.
18.3 Enabling the Removal of a Power
Supply Unit
This section describes the preparations that must be completed prior to the removal
Chapter 18 Maintaining the Power Supply Units of the Crossbar Box 319