RACS: A Case for Cloud Storage Diversity. Paper by Hussam Abu-Libdeh Cornell University Lonnie Princehouse Cornell University Hakim Weatherspoon Cornell University ( 1st ACM Symposium on Cloud Computing, SoCC 2010, Indianapolis, Indiana, USA, June 10-11, 2010. ACM 2010 ) . Presented by
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Hussam Abu-Libdeh Cornell University
Lonnie Princehouse Cornell University
Hakim Weatherspoon Cornell University
(1st ACM Symposium on Cloud Computing, SoCC 2010, Indianapolis, Indiana, USA, June 10-11, 2010. ACM 2010)
Chayutra Pailom CS Department, UTSA
RAID 0 (Striped) Data is spread across all drive volumes. Drive volumes must be the same size. If one drive fails, all data is lost
RAID 5 Data is spread across all drives, as is error-correcting parity information. If one drive fails, data can be reconstructed from the remaining drives.
RAID 1 (Mirrored) Data is copied to two drives simultaneously. Mirrored drive volumes must be the same size. If one drive fails, data can still be accessed from the mirrored drive.
Take 1 minute to take this visualization for better understanding
The authors mentioned that cloud storage is more reliable than hard drives so they leave the readers of this paper assumed less failure of the data and not mentioned that much!
Pricing scheme of different cloud storage providers
Multiple RACS proxies coordinate their actions using ZooKeeper
Inbound and outbound data transfers in the Internet Archive trace for Individual IA data transfers
Read/write requests in the Internet Archive trace for Individual IA read/write requests
Estimated monthly and cumulative costs of hosting on the cloud with different storage providers
The cost of switching the Internet Archive’s storage provider for various configurations
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