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Title: :  Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security
PaperId: :  8672
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 4 Issue 3 2018
DUI:    16.0415/IJARIIE-8672
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
Anushka Santosh PadyalRMD Sinhgad School of Engineering, Warje, Maharashtra, India
Kshitija Shashikant KankRMD Sinhgad School of Engineering, Warje, Maharashtra, India
Anuja Dilip KaleRMD Sinhgad School of Engineering, Warje, Maharashtra, India

Abstract

Computer Engineering
Data Deduplication, Storage System, Chunk Fragmentation, Containers, Performance Evaluation
Duplicate chunks are eliminated between multiple backups, the chunks of a backup unfortunately become physically scattered in different containers, which is known as fragmentation in backup systems. We observe that the fragmentation comes in two categories of containers: sparse containers and out-of-order containers, which have different negative impacts and require dedicated solutions. During a restore, a majority of chunks in a sparse container are never accessed, and the chunks in an out-of-order container are accessed intermittently. Both of them hurt the restore performance. Increasing the restore cache size alleviates the negative impacts of out-of-order containers, but it is ineffective for sparse containers because they directly amplify read operations. Additionally, the merging operation is required to reclaim sparse containers in the garbage collection after users delete backups. In order to reduce the fragmentation, we propose History-Aware Rewriting algorithm (HAR) and Cache-Aware Filter (CAF). HAR exploits historical information in backup systems to accurately identify and reduce sparse containers, and CAF exploits restore cache knowledge to identify the out-of-order containers that hurt restore performance. To reduce the metadata overhead of the garbage collection, we further propose a Container-Marker Algorithm (CMA) to identify valid containers instead of valid chunks. Although data deduplication brings a lot of benefits, security and privacy concerns arise as users’ sensitive data are susceptible to both insider and outsider attacks.

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IJARIIE Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. "Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security" International Journal Of Advance Research And Innovative Ideas In Education Volume 4 Issue 3 2018 Page 1751-1755
MLA Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. "Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security." International Journal Of Advance Research And Innovative Ideas In Education 4.3(2018) : 1751-1755.
APA Anushka Santosh Padyal, Kshitija Shashikant Kank, & Anuja Dilip Kale. (2018). Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security. International Journal Of Advance Research And Innovative Ideas In Education, 4(3), 1751-1755.
Chicago Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. "Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security." International Journal Of Advance Research And Innovative Ideas In Education 4, no. 3 (2018) : 1751-1755.
Oxford Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. 'Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security', International Journal Of Advance Research And Innovative Ideas In Education, vol. 4, no. 3, 2018, p. 1751-1755. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/Reducing_Fragmentation_via_Exploiting_Backup_History_and_Cache_Knowledge_Granting_Security_ijariie8672.pdf (Accessed : ).
Harvard Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. (2018) 'Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security', International Journal Of Advance Research And Innovative Ideas In Education, 4(3), pp. 1751-1755IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/Reducing_Fragmentation_via_Exploiting_Backup_History_and_Cache_Knowledge_Granting_Security_ijariie8672.pdf (Accessed : )
IEEE Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale, "Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security," International Journal Of Advance Research And Innovative Ideas In Education, vol. 4, no. 3, pp. 1751-1755, May-Jun 2018. [Online]. Available: https://ijariie.com/AdminUploadPdf/Reducing_Fragmentation_via_Exploiting_Backup_History_and_Cache_Knowledge_Granting_Security_ijariie8672.pdf [Accessed : ].
Turabian Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. "Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 4 number 3 ().
Vancouver Anushka Santosh Padyal, Kshitija Shashikant Kank, and Anuja Dilip Kale. Reducing Fragmentation via Exploiting Backup History and Cache Knowledge Granting Security. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2018 [Cited : ]; 4(3) : 1751-1755. Available from: https://ijariie.com/AdminUploadPdf/Reducing_Fragmentation_via_Exploiting_Backup_History_and_Cache_Knowledge_Granting_Security_ijariie8672.pdf
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