Primecluster - Fujitsu PRIMEQUEST 480 System Design Manual

CHAPTER 9 Clustering
9.2.2

PRIMECLUSTER

PRIMECLUSTER is a software product for constructing a cluster system.
PRIMECLUSTER virtualizes system-configuring elements such as servers, storage,
networks, and middleware, and enables job processing to be continued autonomously
by error detection, failover (job takeover), and degradation functions to implement
high reliability of the entire system.
Even if a failure occurs in an operating partition or in the cabinet, high availability can
be implemented by having a standby partition and –cabinet take over job processing.
Machines of the PRIMEQUEST series perform communication between
PRIMECLUSTER and the MMB to provide the following functions:
System state monitoring
This function displays the state of a specified node and reports it to the MMB.
System state notification
This function reports changes in the operation state of the local node to another
node.
1 OS-detected events such as OS running and shutdown are reported to the
MMB.
2 When a change in the partition state is detected, the MMB sends a trap to an
associated node registered in advance.
3
A trap is sent to both of the duplicated management LANs.
Event reception from the other system (in the pair active server ↔ standby server)
This function receives information about changes in the state of the other node.
This function receives information from the other MMB and filters duplicated trap
data.
Instruction to the other system (in the pair active server ↔ standby server)
This function sends a Panic instruction and a Reset instruction to a specified other
node.
1 A control instruction from PRIMECLUSTER is reported to the MMB of the
other system.
2
The MMB controls the partition through a private LAN.
Remote power control
This function sends a power-on instruction or a power-off instruction to a specified
other node.
1 A control instruction from the PRIMECLUSTER is forwarded to the MMB
of the other system.
2 The MMB controls power of the partition through a private LAN.
9-8 C122-B001-02EN