In the following figure durability is how many copies of data exist spread across different servers and storage systems in various data centers and availability zones. Standard S3 storage is designed with 99.999999999% durability (how many copies exists) and 99.99% availability (how often can it be accessed) on an annual basis capable of two data centers becoming un-available.Īs its name implies, for a lower fee and level of durability, S3 RRS has an annual durability of 99.999% and availability of 99.99% capable of a single data center loss.
In addition to indicating which AWS region, S3 buckets and objects are provisioned using different levels of availability, durability, SLA’s and costs ( view S3 SLA’s here).Ĭost will vary depending on the AWS region being used, along if Standard or Reduced Redundancy Storage (RSS) selected.
Each object has a unique, user or developer assigned access key. You can create multiple buckets in a region with unlimited number of objects ranging from 1 byte to 5 Tbytes in size per bucket. With S3, you specify a region where a bucket is created that will contain objects that can be written, read, listed and deleted. Part I is here (closer look at EBS) and part III is here (tying it all together).įor those not familiar, Simple Storage Services (S3), Glacier and Elastic Block Storage ( EBS) are part of the AWS cloud storage portfolio of services. This industry trends and perspective cloud conversation is the second (looking at S3) in a three-part series companion to the AWS EBS optimized post found here. Amazon Web Services ( AWS) recently added EBS Optimized support for enhanced bandwidth EC2 instances ( read more here).
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