In terms of loss of volume or corruption, is failure probability of an Amazon EBS volume 'x', indepe
- by Tony Morgan
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/