![]() In case you are using Provisioned IOPS SSD (io1) Volumes, remember that you are paying additionally for the IOPS capacity. ![]() And the data is replicated across three AZs at least. Additionally, you pay only for data used, and S3 capacity is doesn’t need to be provisioned. For example, Standard S3 rates are 77% below General Purpose SSD (gp2) volume prices per GB. Large files in EBS volumes could also be moved to S3. You should use it with caution because data on EBS volume will be lost. So this avoids keeping an unattached volume. It allows you to automatically remove the EBS volume (attached to an EC2 instance) when that instance is terminated. The Delete on Termination is an option you could set when launching your EC2 instance. In order to identify them, just check on AWS Console which ones aren’t in in-use state (for example having “available” or “error” states) Using “Delete on Termination” So consider performing a quick review of all your volumes, and defining which are not in use. These volumes are not used, and still charged daily. They might have terminated their EC2 instance, but forgot to terminate the volume associated. Clients might have volumes that are unattached. But remember that reducing volume size takes much more work. If you need to deploy a new EBS Volume, try to create a small one. This is another strategy to reduce your EBS costs. You could use free tools like Tree File Size (for Windows-based OS) or Disk Usage Analyzer for Ubuntu, or just ncdu command in Linux based systems. There are many ways to do this, but let’s mention some ideas: Reducing data on volumeīefore migrating to a smaller volume, we need to free some space on it. We can call this process a volume migration. And this new volume replaces will replace the other one. ![]() Then the files have to be copied into a new smaller volume. The volume has to be mounted in another EC2. So AWS can increase the volume size, but it can’t reduce the size.īut there is a manual process that allows you to migrate a volume to a smaller one. And doesn’t understand the file systems inside them, or how data is arranged inside the volume. AWS considers EBS volumes as blocks of data. The problem is that this isn’t possible using the AWS Console or CLI. You might think that reducing Amazon EBS costs means just reducing the EBS volume sizes. In case you keep lots of persistent data inside EBS, then you should consider migrating it in a Throughput Optimized HDD (st1) or Cold HDD (sc1) Volumes Migrating to smaller volumes In terms of cost reduction, the first step is to define the type of volume you need for each instance. Note that their minimum provisioning size for them is 500 GB. They are good for applications that read or write large volumes of sequential data, like logs of ETL workloads. They are volumes based on hard disk drives (HDDs). Throughput Optimized HDD and Cold HDD volumes are over 50% cheaper than the other two. Note also that the minimum size of these volumes is 1 GB and 4 GB respectively. You could also watch to CloudWatch metrics for the volume to understand if IOPS is getting close to the IOPS limit. But they allow adding more IOPS to your current volume. And if you realize that your Volume is used intensively, then you will need to add more space to the volume or switch to a Provisioned IOPS volume. You should start with this volume for your instances. The most common type of EBS Volume is the first one. Then you will be charged for the whole 500 GBs, independently that most volume space is unused. For example, you provision a 500 GB volume, but you only use 10GB. They will be charged anyway.Īnother important point is that provisioned means that it doesn’t matter how much data is inside the volume. So it doesn’t matter if it’s not attached to an instance, or it’s attached to a stopped instance. They are also charged from the moment they are created until they are eliminated. ![]() So the biggest the volume, the more you pay. How EBS Volumes are chargedįirst, let’s explore how Amazon EBS volumes pricing. And it doesn’t seem easy to reduce these costs. Unfortunately, Amazon EBS costs can scale up very quickly. It’s persistent and hosts both the instance operating system and user data. This article is a part of our AWS Cost Reduction seriesĪmazon Elastic Block Store (Amazon EBS) is the main storage used for EC2 instances. In this article, we will give describe some strategies to reduce Amazon EBS costs. ![]()
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