automated data replication system

Automated data replication based on server reliability ranks in the distributed databases Custom Paper

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Automated data replication based on server reliability ranks in the distributed databases

In this thesis I propose an automated data replication system that copies the frequently used data from less reliable servers to the most reliable ones in the distributed system. The replication decision is being taken by an algorithm that ranks the servers in the system from unreliable to reliable. This rank is being calculated based on their crash history logs of the servers, reliability of the hardware, size of the data, and the distributed model used in the system.

The outline of the paper is mostly done (can be changed if writer has better suggestions)

Problem
• High availability
• Fault Tolerance
o Outages
§ Planned (need for maintenance of the system)
§ Unplanned (caused by faults)
o Downtime
§ Direct cost of DT
§ Indirect cost of DT
• Redundancy
• Data Replication
Abilities
• Ability to run in a heterogeneous environment.
• Ability to provide optimum data availability without creating data redundancy
• Ability to decrease overhead on updates of the replicated data
How to do it
• Check hardware
o Oldest one
o Fails a lot
• The role of the server
o Main data or important data
What to do
• Rank the servers
• Replicate the data to the most reliable one based on the rank
Challenges
• Consistency

Research for availability is done
fault tolerance is mostly done. Other parts has not done yet.
8-9 pages is already written. This written part includes Availability and parts of fault tolerance.

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