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Ask HN: How redundant is S3? Do I need another backup?
How often does S3 lose/delete your files? Or is there some backup feature/functionality built in, that is pretty robust?
If it will be storing all the user uploaded files, should I also be pushing those files to some other CDN - like Rackspace's CloudFiles?
- dholowiski 16y agoI've heard it said that "if it doesn't exist in three places, it doesn't exist". Despite any claims of reliability, I would always make sure my critical data is backed up in two totally different locations.
- marcamillion 16y agoThat's what I have been thinking. Just wanted to find out what experiences have been like.
- davej 16y agoWith S3 your data is stored in more than three places though.
- dholowiski 16y agoBut it's only stored in one service. If amazon goes bankrupt tomorrow, it's gone.
- davej 16y agoHonestly, you don't need do; everything stored on S3 (unless you're storing it on RRS) is crazy redundant. Amazon claim 99.999999999% durability in any given year: http://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3 http://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3 A bigger worry IMO would be accidentally deleting the files yourself (perhaps through a bug in client code). You can always enable versioning on your bucket to protect against that though.