If the primary copy scheme is used for replication, and the primary gets disconnected from the rest of the system, a new node may get elected as primary.But the old primary may not realize it has got disconnected, and may get reconnected subsequently without realizing that there is a new primary.a. What problems can arise if the old primary does not realize that a new one has taken over?b. How can leases be used to avoid these problems? c. Would such a situation, where a participant node gets disconnected and then reconnected without realizing it was disconnected, cause any problem with the majority or quorum protocols?

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Parallel and Distributed Storage

A parallel storage file system is a sort of clustered file system. A clustered file system is a storage system shared by multiple devices simultaneously.