Filter
Top Products
Table 11-1
Types of maintenance for fan 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 Supported (*2) 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: It is necessary to use dynamic reconfiguration (DR) to disconnect a chassis requiring maintenance from the physical partition.
Table 11-2
Maintenance flow
Details of update process Replacement
1 Preparation 11.3
2 Removing a fan unit 11.4
3 Installingafanunit 11.5
4 Restoring the system 11.6
11.2.1 Types of maintenance
Table 11-1 lists the types of maintenance for the fan units. For the definition of
maintenance, see "4.3 Understanding Types of Maintenance."
11.2.2 Maintenance flow
Table 11-2 shows the maintenance procedure for the fan units.
11.2.3 Precautions for replacement
Note the following points when replacing a fan unit:
■
When replacing multiple fan units, replace one unit at a time. If redundancy of the
fan units cannot be preserved, system-stopped maintenance must be performed.
■
The cooling fans have a redundant configuration. Thus, the system can continue
operating even if one of the fans in the fan units fails. Avoid operating the system
with a faulty fan for an extended period and replace the fan unit containing the
failed fan as soon as possible.
Chapter 11 Maintaining the Fan Units 207