High Availability in Clustered Multimedia Servers. Renu Tewari Daniel M. Dias Rajat Mukherjee Harrick M. Vin. Topics. Problem: high availability in clustered multimedia servers Schemes for high availability Details of some schemes for high availability Simulation Cost performance analysis
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Renu Tewari Daniel M. Dias Rajat Mukherjee Harrick M. Vin
Clustered multimedia servers consists of a set of processing node, each with a local disk array, connected by a high bandwidth switch or network. High availability requires the servers can provide continuous delivery in the presence of failures, including disk failure and node failure.
Front end performs delivery. Back end provides storage.
Stream can be resumed from another delivery node.
Has system-wide effect. It is the major concern in this paper.
Used to handle node failure. A buddy node can access the others disks in case of failure.
Blocks belonging to the same parity group are not placed on the same disk or on any disk on the same node.
Each disk behaves like an M/D/1 queue.