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Backblaze wrote a good piece on that https://www.backblaze.com/blog/cloud-storage-durability/ https://www.backblaze.com/blog/cloud-storage-durability/
by ajay-d 8y ago
Backblaze wrote a good piece on that
https://www.backblaze.com/blog/cloud-storage-durability/ https://www.backblaze.com/blog/cloud-storage-durability/
- idlewords 8y agoThank you for that link! It's very interesting to me that all the calculations laid out here assume independent failure events.
- ahelwer 8y agoIt is universal practice within cloud service providers to span redundancies across "fault domains" - basically things which could make failures correlated, like being in the same machine/power strip/datacenter/geo region. If you assume your fault domain analysis is good, then your failures should be independent. Many global outages are the result of a previously-unidentified fault domain, like the Azure certificate issues. Of course past a certain point it becomes unimportant - who cares about your data if an asteroid takes out every datacenter on Earth at once?