AFR - ratio anual de fallo
por Fernando Plaza en Programación, Cloud Computing
...volumes that operate with 20 GB or less of modified data since their most recent Amazon EBS snapshot can expect an annual failure rate (AFR) of between 0.1% – 0.5%, where failure refers to a complete loss of the volume. This compares with commodity hard disks that will typically fail with an AFR of around 4%, making EBS volumes 10 times more reliable than typical commodity disk drives
Amazon Elastic Block Storage (EBS)
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