US 2001/0056554 A1Published application

System for clustering software applications

AssigneeMicron Technology, Inc.

InventorMichael Chrabaszcz

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Abstract

A system for fault tolerant execution of an application program in a server network, which includes: a first server for executing the application program; a cluster network database, coupled to the first server; an object, stored in the cluster network database, which represents the program and contains information pertaining to the program; a failure detection module which detects a failure of the first server; a second server, coupled to the cluster network database; and a failover module which loads the application program in the second server upon detection of the failure of the first server. The information contained within the object includes: a host server attribute which identifies which server is currently executing the program; a primary server attribute which identifies which server is primarily responsible for executing the program; and a backup server attribute which identifies which server is a backup server for executing the program if the primary server experiences a failure.

Claims4

Dependent claims

A system of loading and registering a software program in a cluster network database, coupled to a first server and a second server in a server network, comprising:

a primary load module which loads the program in the first server;
a preregistration module which determines if the program was previously registered;
an object module which creates an object for the program and stores the object in the database, if it is determined that the program was not previously registered;
a nonfailure module which determines if a system operator previously unloaded the program and sets a host server attribute within the object to a value of null, if it is determined that a system operator previously unloaded the program;
a phoenix detect module which determines if the first server is coming back from a failback process, if it is determined that the system operator did not previously unload the program;
and
a synchronization module which synchronizes all replicated databases within the network, if it is determined that the first server is not coming back from failback process.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/879,587Filed 11 Jun 2001
Priority: 13 May 1997
Published: 27 Dec 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 11/1658
Error detection or correction of the data by redundancy in hardware: data re-synchronization of a redundant component, or initial sync of…
G06F 11/2023
Where processing functionality is redundant: failover techniques
H04L 41/0663
Using network fault recovery: performing the actions predefined by failover planning, e.g. switching to standby network elements
H04L 41/0856
By actively collecting configuration information or by backing up configuration information: by backing up or archiving configuration information

Family

Application60/046,327Us provisional application · filed 13 May 1997
Application08/942,411Division · filed 1 Oct 1997
Application09/879,587Division · filed 11 Jun 2001
US 6,363,497 B1Related patent
US 6,701,453 B2Related patent
US 2001/0056554 A1This patent

From the US filing history. Foreign family members aren’t listed.