Figure 1.6 Improved Business Continuity With System Mirror - Fujitsu PRIMEQUEST 480 System Design Manual

In operation with System Mirror, if a hardware failure occurs while the system is
operating, the failure location (system) is disconnected, and the task is continued with
the other system. The disconnection stops neither the system nor the task. After the
disconnection, the task is performed only by one system, while a search for the cause
of the failure is made so that the faulty component can be replaced quickly and
operation can return to system mirrored operation quickly. Thus, System Mirror can
improve business continuity in the event of a hardware failure.
Existing product
PRIMEQUEST
C122-B001-02EN
Operating
Operating

Figure 1.6 Improved business continuity with System Mirror

Task stopped
Failure occurrence
Search for cause
Repair work
One system stopped
Operating (Another system
continues processing)
Failure occurrence
Search for cause
Replacement
Reboot
1.2 PRIMEQUEST Features
Time
Operating
System recovery
Operating
Scheduled parts replacement is possible.
A reboot returns the system to the
duplication state.
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