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Table 9-1
Types of maintenance for the crossbar unit
Configuration Active/hot Active/cold Inactive/hot Inactive/cold System stopped
Build in g block confi g u rat io n
Unsupported Supported (*) Unsupported Supported Supported
*: It is necessary to use dynamic reconfiguration (DR) to disconnect a chassis requiring maintenance from the physical partition.
Table 9-2
Maintenance flow
Details of update process Replacement
1 Preparation 9.3
2 Removing the crossbar units 9.4
3 Installing the crossbar unit 9.5
4 Restoring the system 9.6
Caution -
To completely shut down the system, all the power cords must be
removed. If the power cords are not removed, an electrical failure may occur.
9.2.2 Maintenance flow
Table 9-2 lists the sequence of the maintenance procedure for the crossbar units.
9.3 Enabling the Removal of a Crossbar
Unit
This section describes preparation that must be completed prior to removing a
crossbar unit. The procedure for the preparation varies depending on the maintenance
type, as follows:
■
Active/Cold maintenance
■
Inactive/Cold maintenance
■
System-stopped maintenance
Chapter 9 Maintaining the Crossbar Units 181