Mobile ad hoc network (MANET) is a dynamic network consisting of a collection of wireless mobile nodes that communicate with each other without the need of centralized authority. Each node can send and receive data, and it should also forward routing information unrelated to its own use. Routing protocols in MANET establish path between source and destination based on number of hops. Establishment of shortest path alone is not sufficient to prolong the network lifetime. Energy consumption reduction methods are necessary as the nodes in MANET are restricted by battery supply. Energy is drained when the MANET nodes transmit and receive the data. For itself, energy management techniques are necessary to improve the performance of the routing protocol. Both proactive and reactive protocols have trade-off in them. Zone routing protocol (ZRP) is a hybrid protocol which overcomes the shortcomings of proactive and reactive routing protocols. ZRP divides the entire network into zones of variable size where routing inside the zone is performed using proactive routing approach and exterior to zone is performed using reactive routing approach. The performance characteristics of the ZRP protocol are established through simulations by comparing it to well-known routing protocol, namely, AODV.

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In the recent scenario, capacity of the storage system increases significantly due to increasing demands. Data availability is a major concern in the context of storage systems. In order to achieve high data availability, a Maximum Distance Separable (MDS) code such as Row-Diagonal Parity (RDP) is used in RAID 6 storage systems. In order to ensure continuous availability of data, even a failure in a single disk cannot be tolerated and hence it must be recovered at the earliest. Existing RDOR-RDP, a modified scheme of RDP that achieves minimal disk I/O access and reduced recovery time when compared with conventional scheme but yet fails to achieve load balancing during the recovery process. In this work, Parity declustering based load balancing is proposed, which provides optimal recovery time when compared to RDOR-RDP.

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