In terms of loss of volume or corruption, is failure probability of an Amazon EBS volume 'x', indepe

Posted by Tony Morgan on Stack Overflow See other posts from Stack Overflow or by Tony Morgan
Published on 2010-06-07T21:23:04Z Indexed on 2010/06/13 22:02 UTC
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amazon-ebs

In terms of loss of volume or corruption, is failure probability of an Amazon EBS* volume 'x', independent of the failure of another volume 'y'.

Amazon states[1] AFR** of between 0.1%-0.5%, lets say 0.5%, 0.005. To restate the question is the AFR composed of two EBSs mirrored actually 0.005*0.005 = 0.000025?

To be clear I'm not interested in high availability here, just very high durability.

*EBS = elastic block storage (amazons persistant disks) **AFR = annual failure rate. [1] http://aws.amazon.com/ebs/

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