The quoted 11 nines durability number is saying that you won't lose your data. Availability has nothing to do with it. It seems the OP used the wrong word and should have said "durability" instead of "reliability".
> this level is almost unachievable by any end customer product.
Not sure what your point is here, unless you're highlighting the benefits of using a cloud provider. AWS is not using an "end customer product" to implement S3. They're providing a managed service, and their implementation and management is what allows it to achieve those levels of durability.
> this level is almost unachievable by any end customer product.
Not sure what your point is here, unless you're highlighting the benefits of using a cloud provider. AWS is not using an "end customer product" to implement S3. They're providing a managed service, and their implementation and management is what allows it to achieve those levels of durability.