What data is stored in Ephemeral Storage of Amazon EC2 instance?

Basically, root volume (your entire virtual system disk) is ephemeral, but only if you choose to create AMI backed by Amazon EC2 instance store. If you choose to create AMI backed by EBS then your root volume is backed by EBS and everything you have on your root volume will be saved between reboots. If … Read more

AWS EFS vs EBS vs S3 (differences & when to use?) [closed]

One word answer: MONEY 😀 1 GB to store in US-East-1: (Updated at 2016.dec.20) Glacier: $0.004/Month (Note: Major price cut in 2016) S3: $0.023/Month S3-IA (announced in 2015.09): $0.0125/Month (+$0.01/gig retrieval charge) EBS: $0.045-0.1/Month (depends on speed – SSD or not) + IOPS costs EFS: $0.3/Month Further storage options, which may be used for temporary … Read more

Benefits of EBS vs. instance-store (and vice-versa) [closed]

The bottom line is you should almost always use EBS backed instances. Here’s why EBS backed instances can be set so that they cannot be (accidentally) terminated through the API. EBS backed instances can be stopped when you’re not using them and resumed when you need them again (like pausing a Virtual PC), at least … Read more

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