Geodesic
S-TRAP: Optimization and Evaluation of Timely Recovery to Any Point-in-time (TRAP)
Computer Science and Information Systems, Tome 9 (2012) no. 1.

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This paper presents S-TRAP, a novel block-level CDP (Continuous Data Protection) recovery mechanism based on TRAP. In accordance with a certain time interval L , S-TRAP breaks down the parity chain of TRAP and generates new sub-chains. Besides, S-TRAP introduces previous block cache which can reduce the negative impact on the primary storage system. Both mathematical analysis and experimental evaluation demonstrate that S-TRAP not only has the advantage of high recovery efficiency and reliability, but also further reduces the parity storage usage. Even more important, S-TRAP reduces the negative impacts on primary storage system performance to a large extent.
Keywords: data protection, snapshot, CDP, data backup, data recovery 
@article{CSIS_2012_9_1_a19,
     author = {Chao Wang and Zhanhuai Li and Na Hu and Yanming Nie},
     title = {S-TRAP: {Optimization} and {Evaluation} of {Timely} {Recovery} to {Any} {Point-in-time} {(TRAP)}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2012_9_1_a19/}
}
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Chao Wang; Zhanhuai Li; Na Hu; Yanming Nie. S-TRAP: Optimization and Evaluation of Timely Recovery to Any Point-in-time (TRAP). Computer Science and Information Systems, Tome 9 (2012) no. 1. http://geodesic.mathdoc.fr/item/CSIS_2012_9_1_a19/