Article ID: 5004 Reviewed: 23/05/2018 Product Version: AhsayOBM / AhsayACB: Post-220.127.116.11 OS: All platforms
This article outlines the steps to perform a data integrity check for backup data stored in the backup destination (e.g. local destination, AhsayCBS or other cloud storage).
To perform a data integrity check, login to the AhsayOBM / ACB user interface:
Consult with your cloud service provider to ensure that CRC checks are performed regularly for your data.Q: How is Amazon S3 designed to achieve 99.999999999% durability?
Amazon S3 redundantly stores your objects on multiple devices across multiple facilities in an Amazon S3 Region. The service is designed to sustain concurrent device failures by quickly detecting and repairing any lost redundancy. When processing a request to store data, the service will redundantly store your object across multiple facilities before returning SUCCESS. Amazon S3 also regularly verifies the integrity of your data using checksums.
Q: What checksums does Amazon S3 employ to detect data corruption?
Amazon S3 uses a combination of Content-MD5 checksums and cyclic redundancy checks (CRCs) to detect data corruption. Amazon S3 performs these checksums on data at rest and repairs any corruption using redundant data. In addition, the service calculates checksums on all network traffic to detect corruption of data packets when storing or retrieving data.
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