4 ms·
> They're far enough apart for good isolation, which provides durability and availability It can't possibly be enough for critical data though, right? I'm gues
by alexchamberlain 3y ago
> They're far enough apart for good isolation, which provides durability and availability
It can't possibly be enough for critical data though, right? I'm guessing a fire in 1 is unlikely to spread to another, but could it affect the availability of another? What about a deliberate attack on the DCs or the utilities supplying the DCs?
- immibis 3y agoYes, if a terrorist blows up all of the several Amazon DCs holding your data, your data will be lost. This is true no matter how many DCs are holding your data, who owns them, or where they are. You can improve your chances, of course. There have been region-wide availability outages before. They're pretty rare and make worldwide news media due to how much of the internet they take out. I don't think there's been S3 data loss since they got serious about preventing S3 data loss.
- rfoo 3y ago> but could it affect the availability of another Availability is a different beast than durability. I think people are paranoid here about durability instead of availability. S3 advertises four nines availability and 12 nines durability.