4 ms·

How on earth is this number actually being calculated? I'm an AWS customer and all of my ec2 EBS instances are up and running - and that's in us-east-1b, which

How on earth is this number actually being calculated? I'm an AWS customer and all of my ec2 EBS instances are up and running - and that's in us-east-1b, which is IIRC where this outage occurred.

yuvadam 15y ago
Your us-east-1b is not other customers us-east-1b. Availability zones are permuted randomly for each customer. Nonetheless, just because you haven't been affected, doesn't mean other have not been, or still aren't.
- bgentry 15y ago
  I really wish they would have picked another way to deal with the fact that people write crappy software that only launches in "1a" and "1b". They dealt with the resulting capacity imbalances by randomly remapping AZs for new accounts, but AFAIK they're never publicly acknowledged this so most people aren't aware. Instead they should have just started charging more for resources requested explicitly in those zones until people fixed their poorly written software.
  - bdr 15y ago
    They've explained how it works from the beginning.
    - mataiklanb 15y ago
      http://www.estojaya.co.cc/2011/04/meriahkan-pesta-ulang-tahun-bersama.html http://www.estojaya.co.cc/2011/04/meriahkan-pesta-ulang-tahu...
- mattdawson 15y ago
  Right, I understand that. But it seems irresponsible to suggest - as I think this site does - that the entirety of AWS has the uptime you're advertising.
- SpikeGronim 15y ago
  "Availability zones are permuted randomly for each customer" This statement is false. AZs map directly to physical facilities. If you and I both ask for instances in us-east-1b they will have lower ping times than if one of us has an instance in us-east-1c. Disclaimer: I used to work for AWS.
  - amock 15y ago
    According to http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/us... "Availability Zones are not the same across accounts."
    - SpikeGronim 15y ago
      Well then I was wrong. Apologies.
  - justinsb 15y ago
    If you're correct, that would be _very_ interesting. The AWS forums are full of statements to the contrary, I thought from AWS employees. The status updates never mention the particular zone (I presumed because the names don't match for different people.) The FAQ says this: "Q: How can I make sure that I am in the same Availability Zone as another developer? We do not currently support the ability to coordinate launches into the same Availability Zone across AWS developer accounts." http://aws.amazon.com/ec2/faqs/#How_can_I_make_sure_that_I_am_in_the_same_Availability_Zone_as_another_developer http://aws.amazon.com/ec2/faqs/#How_can_I_make_sure_that_I_a... If AZs map directly to physical facilities, how does that FAQ make sense? We're straining to read the tea-leaves here, rather than AWS just telling us what they've built.

How on earth is this number actually being calculated? I'm an AWS customer and all of my ec2 EBS instances are up and running - and that's in us-east-1b, which is IIRC where this outage occurred.

yuvadam 15y ago

Your us-east-1b is not other customers us-east-1b. Availability zones are permuted randomly for each customer. Nonetheless, just because you haven't been affected, doesn't mean other have not been, or still aren't.

bgentry 15y ago
I really wish they would have picked another way to deal with the fact that people write crappy software that only launches in "1a" and "1b". They dealt with the resulting capacity imbalances by randomly remapping AZs for new accounts, but AFAIK they're never publicly acknowledged this so most people aren't aware. Instead they should have just started charging more for resources requested explicitly in those zones until people fixed their poorly written software.
- bdr 15y ago
  They've explained how it works from the beginning.
  - mataiklanb 15y ago
    http://www.estojaya.co.cc/2011/04/meriahkan-pesta-ulang-tahun-bersama.html http://www.estojaya.co.cc/2011/04/meriahkan-pesta-ulang-tahu...
mattdawson 15y ago
Right, I understand that. But it seems irresponsible to suggest - as I think this site does - that the entirety of AWS has the uptime you're advertising.
SpikeGronim 15y ago
"Availability zones are permuted randomly for each customer" This statement is false. AZs map directly to physical facilities. If you and I both ask for instances in us-east-1b they will have lower ping times than if one of us has an instance in us-east-1c. Disclaimer: I used to work for AWS.
- amock 15y ago
  According to http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/us... "Availability Zones are not the same across accounts."
  - SpikeGronim 15y ago
    Well then I was wrong. Apologies.
- justinsb 15y ago
  If you're correct, that would be _very_ interesting. The AWS forums are full of statements to the contrary, I thought from AWS employees. The status updates never mention the particular zone (I presumed because the names don't match for different people.) The FAQ says this: "Q: How can I make sure that I am in the same Availability Zone as another developer? We do not currently support the ability to coordinate launches into the same Availability Zone across AWS developer accounts." http://aws.amazon.com/ec2/faqs/#How_can_I_make_sure_that_I_am_in_the_same_Availability_Zone_as_another_developer http://aws.amazon.com/ec2/faqs/#How_can_I_make_sure_that_I_a... If AZs map directly to physical facilities, how does that FAQ make sense? We're straining to read the tea-leaves here, rather than AWS just telling us what they've built.