4 ms·

>> AWS promises to keep data safe without requiring cross region redundancy. A perfect example of a claim they never made.

mitxela 28d ago
S3 is advertised as having 11 9's. That means in the entire history of S3 they've only lost a handful of objects, and will continue to lose objects at this same rate.
- Betelbuddy 28d ago
  You are confusing the concepts, and applying the 11 nines to the wrong problem. Durability is about: "If I successfully store an object in S3, how unlikely is S3 to permanently lose that object because of storage failures?" It does not answer: "Will I be able to access that object, after a rain of Shahab-1 or Shahab-2 burn all data centers in the 3 availability regions across which my S3 bucket is spread out..."
  - mitxela 28d ago
    Is a disk being hit by a missile not a disk failure? Someone should inform the RAID controller those disks are actually fine, then.
- antonvs 28d ago
  Eleven nines covers ordinary infrastructure failures, not acts of war that physically destroy the underlying facilities. It's similar to any engineered artifact, like a skyscraper. They have a structural safety factor that defines their resilience to failures that the system is designed to tolerate, it doesn't make them immune to missile strikes.
  - mitxela 28d ago
    This is a normal failure mode in American military facilities in the Middle East. Whoever designed an American military facility in the middle east and did not intend for it to withstand missile attacks was incompetent.
    - antonvs 27d ago
      You think you can cover up your misunderstanding of how data durability numbers work with zealotry?
steveBK123 28d ago
You'd be surprised how many customers are lead to believe this by a combination of opaque marketing, aggressive sales, and willful ignorance. I worked at a 2000 person shop where the CTO moved us from 1 on-prem dc (we were begging to add a secondary site for years due to outage risk) to 1 AWS region. It's not exactly straightforward to run multi-region across an alphabet soup of AWS services without decent configuration / application awareness, paying at least double.

mitxela 28d ago

S3 is advertised as having 11 9's. That means in the entire history of S3 they've only lost a handful of objects, and will continue to lose objects at this same rate.

Betelbuddy 28d ago
You are confusing the concepts, and applying the 11 nines to the wrong problem. Durability is about: "If I successfully store an object in S3, how unlikely is S3 to permanently lose that object because of storage failures?" It does not answer: "Will I be able to access that object, after a rain of Shahab-1 or Shahab-2 burn all data centers in the 3 availability regions across which my S3 bucket is spread out..."
- mitxela 28d ago
  Is a disk being hit by a missile not a disk failure? Someone should inform the RAID controller those disks are actually fine, then.
antonvs 28d ago
Eleven nines covers ordinary infrastructure failures, not acts of war that physically destroy the underlying facilities. It's similar to any engineered artifact, like a skyscraper. They have a structural safety factor that defines their resilience to failures that the system is designed to tolerate, it doesn't make them immune to missile strikes.
- mitxela 28d ago
  This is a normal failure mode in American military facilities in the Middle East. Whoever designed an American military facility in the middle east and did not intend for it to withstand missile attacks was incompetent.
  - antonvs 27d ago
    You think you can cover up your misunderstanding of how data durability numbers work with zealotry?

steveBK123 28d ago

You'd be surprised how many customers are lead to believe this by a combination of opaque marketing, aggressive sales, and willful ignorance. I worked at a 2000 person shop where the CTO moved us from 1 on-prem dc (we were begging to add a secondary site for years due to outage risk) to 1 AWS region. It's not exactly straightforward to run multi-region across an alphabet soup of AWS services without decent configuration / application awareness, paying at least double.