Multi-class heterogeneous clients in a clustered filesystem

Details Multi-class heterogeneous clients in a clustered filesystem Multi-class heterogeneous clients in a clustered filesystem

2003-04-16

2009-11-10

Vaughn, Jr., William C (Department: 2444)

Electrical computers and digital processing systems: multicomput

Multicomputer data transferring via shared memory

Accessing another computer's memory

C709S201000, C709S221000

Reexamination Certificate

active

07617292

ABSTRACT:
A cluster of computer system nodes connected by a storage area network include two classes of nodes. The first class of nodes can act as clients or servers, while the other nodes can only be clients. The client-only nodes require much less functionality and can be more easily supported by different operating systems. To minimize the amount of data transmitted during normal operation, the server responsible for maintaining a cluster configuration database repeatedly multicasts the IP address, its incarnation number and the most recent database generation number. Each node stores this information and when a change is detected, each node can request an update of the data needed by that node. A client-only node uses the IP address of the server to connect to the server, to download the information from the cluster database required by the client-only node and to upload local disk connectivity information.

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