EFS is relatively easy to learn to use because it mirrors the traditional file hierarchy structure. Unlike EBS or EFS, S3 is not limited to EC2. 60/month in S3. 先に一般的なストレージタイプを理解しましょう。What is AWS S3. Use S3 Natively. EFS is a Network Filesystem (NFS). AWS S3 vs EBS vs EFS Storage. AWS Storage Cloud Native Options. S. In this AWS Storage video, we will understand differences between object, block, file and distributed file system storages. This particular scenario tests your understanding of EBS, EFS, and S3. – EFS adalah sistem file yang dapat Anda pasang ke EC2. Si ya tienes una cuenta, Iniciar sesión. AWS EBS AWS S3; Data is stored as blocks: Data is stored as objects: Store block can size up to 16 tebibytes each (17. EBS can accommodate a smaller amount of data than S3. Crear una llave con SSE-S3. What Is Amazon S3? EBS and EFS are both faster than Amazon S3, with high IOPS and lower latency. EBS volumes have the following features: EBS volumes preserve their data through instance stops and terminations. This service was designed to be used on HPC solutions so it support a large number of clients and the throughput can go really high. . The article “When to Choose Amazon EFS” says: Amazon EFS provides shared file storage for use with compute instances in the AWS Cloud and on-premises servers. それぞれの大まかな仕様と比較は以下の通り. FSx for Lustre. East (Ohio), EU (Ireland). Upgrade to remove ads. 9. The key difference is that EBS is elastic (easily scalable and extensible) compared to a. Files stored within an S3 bucket can be accessed programmatically or directly from services such as AWS CloudFront. How is the answer - "Cost of test file storage on S3 Standard < Cost of test file storage on EFS < Cost of test file storage on EBS". 하지만 각각 서비스 특징과 성능에 따라 사용 용도를 분별할 필요가 있다. Some RDS older instances have local storage, most use EBS only. EBS phù hợp nhất cho cơ sở dữ liệu quan hệ và NoSQL, các ứng dụng doanh nghiệp như hệ thống. Amazon Elastic Block Store (Amazon EBS) is an umbrella term for all of AWS’s block storage services. How to use Auto Scaling. In this article, we will compare the characteristics and use cases of three popular AWS storage services: Amazon S3 (Simple Storage Service), Amazon EBS (Elastic Block Store), and Amazon EFS (Elastic File System). Simple Storage Service – S3. In this video, we step into the world of Amazon Web Services (AWS) storage and shed light on the key differences between three popular services: Elastic Bloc. 2. Amazon EFS is one of the popular storage. Even if voice assistants are increasingly popular, voice-activated banking services are likely to still be a novelty to most customers. We performed a comparison between Amazon EBS (Elastic Block Store) and Amazon EFS (Elastic File System) based on real PeerSpot user reviews. S3 is an object store, meaning it is a higher layer data storage system, essentially it is a database "blob" storage, storing data in an underlying simple database as an object. It provides low-latency performance by caching. Cuối cùng, Amazon S3 là một kho lưu trữ object rất hiệu quả trong việc lưu trữ số lượng lớn các bản sao lưu hoặc tệp người dùng. If you were to run a database on EC2 then you would use EBS to store the data. 30 / GB * month Limitation 5TB / object 16TB / storage 47. , random access files for an RDBMS) or used by an. EBS volumes that are attached to an instance are exposed as storage volumes that persist independently from. Elastic File System (EFS). 4. This requires persistent storage, that is, storage that lives beyond the lifetime of the container, pod, or node. Amazon EC2 Storage & Data Management. When users create an EBS snapshot, they can use it to configure an EC2 AMI. S3 vs. Amazon S3 can be accessed from anywhere. A Comparison of AWS Storage: S3 vs EBS vs EFS. Amazon EBS Multi-Attach a single. Amazon S3 vs EBS vs EFS. S3 vs. Crear cuenta. Find out in this report how the two Public Cloud Storage Services solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI. この機能は、 AWS が公開している amazon -efs-utilsというパッケージを導入することで使うことができます。. Introduction S3. AWS storage services are essential fo. Amazon Route 53. Amazon EBS volumes attach to Amazon EC2 instances as devices via a separate network connection to the host computer. Curso Práctico de Storage en AWS. There are various AWS storage options that you can choose but whenever these criteria show up, always consider using EFS instead of using EBS Volumes which is. While EFS is a managed elastic file system designed for use across different machines and availability zones, EBS is designed as a fast and reliable block storage volume for single machines (although EBS multi-attach is an exception to this. What are EC2 instance States. EFS is file system storage, using NFSv4 protocol. Amazon S3 (Simple Storage Service), EBS (Elastic Block Store) and EFS (Elastic. To make the most of the voice technologies, you need to develop and maintain a solid data infrastructure. Conclusiones. 37. S3: When to Use AWS's Three Storage Solutions We take a look at EBS, EFS and S3, which are some of AWS's most popular storage solutions, and how to decide which is. West (Oregon), U. Lectura ¡Hola! Como proyecto de este curso vas a hacer de cuenta que eres el. If you have windows I would stick to EBS or FSx. Files stored within an S3 bucket can be accessed programmatically or directly from services such as AWS CloudFront. Amazon EFS provides a shared file storage for use with compute instances in the AWS cloud and on premise servers. 📢 Excited to share my new article on "A Comparison of AWS Storage: S3 vs EBS vs EFS"! 🚀🔥 In the ever-evolving world of cloud computing, storage is a critical aspect of managing and. , random access files for an RDBMS) or used by an. Amazon EFS. EFS S3: -Provides developers and IT teams with secure, durable. The differences in monthly charges for similar amounts of S3 and EBS with provisioned I/O storage can be substantial. Simple Storage Service Benefits of S3 Difference between EFS, EBS, and S3 Do Check : Our Blog On AWS Solution Architect Training . A Comparison of AWS Storage: S3 vs EBS vs EFS In the world of cloud computing, storage plays a crucial role in managing and organizing data. File system access is via the NFS protocol. 1. This code below defines a Kubernetes deployment that creates 3 replicas of pods called “efs-pod”. File Gateway Supports a file interface into S3 and combines a service and a. js in all three test cases. The key difference is that EBS is elastic (easily scalable and extensible) compared to a local. EBS is a high-performance per-instance block storage system designed to act as storage for a single EC2 instance (most of the time) EFS is a highly scalable file storage system designed to provide flexible storage for multiple EC2 instances. Route 53: It is a service provided by AWS to route end-user applications in an economical and routine fashion. EBS volumes can be attached to both Windows and non-Windows EC2 machines, whereas EFS volumes are designed for Linux-based hosts only. 5. Public vs Elastic IP. In the AWS platform, cloud storage is primarily broken down into three services: Simple Storage Service (S3). File (network file system): Amazon EFS. S3 is for object storage. Home. Sorted by: 3. EBS is for EC2 block storage. Now that this serverless capability exists, AWS DataSync seems. Great for Data lakes, archiving files for long-term, and hosting static websites. Ofcourse there would be read/write latency compared to EBS as EBS is designed for low-latency access to data. Understand different use cases for S3 vs EBS vs EFS; Database. Can be accessed concurrently by multiple Amazon EC2 instances, allowing them to share data. The system shrinks and grows when you remove or add files. As already mentioned EFS is completely different to S3. EBS, S3, and EFS storage services are some of the most popular storage services on AWS. 30 per GB for EFS vs. The difference between these three types of storage is, EBS is only accessible from a single EC2 instance, while EFS allows you to mount the file system across multiple regions. If you find our videos useful and wish to support our channel then you can use "Thanks" button to extend your support. The Difference. Amazon Web Services (AWS) offers various…(S3 vs. Understand when to use EFS, compared to using S3, EBS, or instance stores. Make a GitHub repo. Files stored within an S3 bucket can be accessed programmatically or directly from services such as AWS CloudFront. Each Amazon EBS volume is automatically replicated with its AZ to protect you from component failure, offering high availability and durability. Amazon EFS vs Amazon FSx for Windows vs Amazon FSx for Lustre; Amazon Kinesis Data Streams vs Data Firehose vs Data Analytics vs Video Streams; Amazon RDS vs DynamoDB; Amazon S3 vs EBS vs EFS; Amazon S3 vs Glacier; Amazon Simple Workflow (SWF) vs AWS Step Functions vs Amazon SQS; Application Load Balancer vs Network. . Amazon Elastic Block Store (EBS) is a persistent disk-storage service, which provides storage volumes to a virtual machine (similar to VMDK files in VMWare) Amazon Simple Storage Service (S3) is an object store system that stores files as objects and optionally makes them available across the Internet. 2, while Amazon S3 Glacier is rated 7. Consider the benefits and uses of EBS vs. With io1 you get to specify IOPS capabilities (S3 has no user specified performance control). Not sure how it compares relative to S3 in terms of performance. Two fundamental types of storage provided by AWS are block storage and object storage. EBS and EFS are both faster than Amazon S3, with high IOPS and lower latency. S3 is an object storage system, designed to provide archiving and data control options. Anyway, there are use cases for S3, EBS, EFS and FSx. EBS allows you to store files directly on an EC2 instance, allowing the instance to access your files in a. Unlike EBS and EFS, S3 is not bound to EC2 instances. 023 / GB-month. Object: S3, Glacier. AWS FSx for Lustre vs EFS: Head to Head FSx for Lustre is an entirely managed service that offers high-performance, scalable, cost-effective storage for compute workloads. Elastic File Store – EFS is a file storage service for use with Amazon compute (EC2, containers, serverless) and on-premises servers. Multiple volumes can be mounted to the same instance. Performance. Understanding the SLA differences between Amazon EBS, Amazon EFS, and Amazon S3 storage is a key business decision. Vote. The Takeaways. The retrieval time is flexible, and. Introducción al storage en AWS. Data availability for workflow (S3 vs EBS vs EFS vs Amazon FSx) As the CryoEM data is needed across multiple. Amazon Glacier. 00 per provisioned MB/s-month)EBS stands for Elastic Block Store and is a block-level storage option for use with Amazon Elastic Compute Cloud (EC2) instances. 30 GB-month ($6. File Gateway Supports a file interface into S3 and combines a service and a. EFS, EBS, and S3 are AWS’ three different storage types that are applicable for different types of workload needs. Amazon Simple Storage Service. It is quite expensive but if use S3 as a data lake you can make it affordable (FSx would works as a cache and would only exist while processing your requests). EBS (Amazon Elastic Block Store) is a block type storage provided by AWS. is an object store with a simple key, value store design, and good at storing vast numbers of backups or user files. Topics we’ll cover: 10. Automatically scales as you add or remove files, with no need to provision storage capacity in advance. In this blog, we will talk about SLAs for various AWS storage services — Amazon EBS vs. It is mainly used for data that should be quickly accessible and requires long term durability. The word "distro" simply refers to the distribution of the same open-source Kubernetes software deployed by Amazon EKS in the AWS cloud. 1 vs . EBS(Elastic block storage) is a block-level storage service provided by Amazon and it is basically designed. The Difference Explained Mar 27, 2018 Explore topics Workplace Job Search Careers Interviewing Salary and Compensation. Using an EFS file system, you can configure instances to mount the file system. 00099 per GB-month (or $1 per TB-month), S3 Glacier Deep Archive offers the lowest cost storage in the cloud, at. With SAP on AWS, we have two main storage options, Amazon EFS and EBS. S3 vs EBS vs EFS vs Instance Store. Study with Quizlet and memorize flashcards containing terms like IAM, S3, S3 Storage Classes and more. EBS vs EFS. With a single API call, EBS can be scaled up or down. EBS stands for Elastic Block Store and is a block-level storage option for use with […]AWS EFS vs EBS Multi-Attach. Object Storage vs File System vs Block Storage. S3 is good at storing vast numbers of data as backups or user files. Fixing the comparison: S3 is a storage facility accessible any where; EBS is a device you can mount onto EC2; EFS is a file system you can mount onto several EC2 instances at the same time; At this point it's a little premature to compare EFS and EBS- the performance of EFS isn't known, nor is its reliability known. Stateful applications rely on data being persisted and retrieved to run properly. js. Good for sharable workloads and application. However, interesting difference is between EFS and S3, and to identify proper use cases for it. AWS offers a comprehensive suite of storage services, catering to diverse workloads and use cases. S3 is ideal for scalable and durable storage for any type of. It seems to be the cheapest for data storage. EFS Systems. Comparing EBS vs. Identity and Access Management(IAM): provides the service of super-secure functioning on the services of AWS. Since EBS is cheaper than EFS, you can use it for. My Loki is installed with Helm so a local file values. 注意点. 💡 S3 vs EBS vs EFS . Think photos, videos, files, and simple web pages. If you find our videos useful and wish to support our channel then you can use "Thanks" button to extend your support. AWS Backup provides a control plane to manage backups for services such as EBS, EFS, EC2, DynamoDB, Aurora and storage. Create a gateway VPC endpoint for Amazon S3. 2 Use cases 3 Amazon EFS 3. One allows you to run servers in the cloud with minimal effort on your part, while the other is designed for storing large amounts of static data and. In this blog, we will discuss EFS, EBS, and S3, and on the basis of that, we will compare these three storage types offered by AWS. Example Scenario. You can use Amazon ECS to run stateful containerized applications at scale by using AWS storage services, such as Amazon EFS, Amazon EBS, or FSx for Windows File Server, that provide data persistence to inherently ephemeral containers. There are a lot of differences when it comes to comparing in Amazon EFS vs. Elastic File System (EFS) is an OS-agnostic network file system based on NFS. In this article, we will take a look at these three services and also discuss some use cases for these services. Amazon EKS Distro follows the same Kubernetes version release cycle as Amazon EKS and is provided to you as an open-source project that you. It provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently-accessible storage for up to thousands of Amazon EC2 instances. Amazon S3 provides durability by redundantly storing the data across multiple Availability Zones whereas EBS provides durability by redundantly storing the. The term data persistence means that the data itself outlasts the. EBS : Elastic Block Store. Lesson 19, Topic 6. is an object store with a simple key, value store design, and good at storing vast numbers of backups or user files. So, if you installed a database on it. EFS will share files between two instances. In the world of cloud computing, storage plays a crucial role in managing and organizing data. The three key file storage services AWS provides are similar, but different. In the AWS platform, cloud storage is primarily broken down into three services: Simple Storage Service (S3). Faster than S3 but slower than EBS. In short, S3 is for object storage, EBS for block storage and EFS for. EBS. AWS Storage Types. for Linux EFS and S3 would be fine, S3 would be a lot cheaper. EBS appears as a mountable volume while the S3 requires software to read and write data. S3 is. EBS (or it's LAN-like equivalent EFS) is the only choice (out of the 2 being explored) if your file is going to be frequently updated (e. EBS. Data is organized hierarchically. Please do follow the steps given below. offers pay for the. Since most of you are familiar with S3, I will not talk about it in detail. Apa perbedaan praktis antara AWS EFS, EBS dan S3? Dari Pemahaman masing-masing: – S3 adalah fasilitas penyimpanan yang dapat diakses di mana saja. This video AWS Storage - S3 vs EBS vs EFS Comparison is designed to teach you the storage options on the AWS platform. Amazon S3 Benefits The Amazon Simple Storage Service (Amazon S3) is AWS’s object storage solution. Conclusiones. The key difference is that EBS is elastic (easily scalable and extensible) compared to a local. It depends on your specific use-cases and softwares but here's some basic guideline. See: Amazon EBS volume types - Amazon. 이 두 스토리지 시스템의 특징과 어느 상황에서 각 서비스를 사용해야 하는지 알아보자. また、この説明を聞いたら想像がつくと思いますが efsのほうが値段が高いです. O armazenamento de objectos simples S2 não pode ser montado. In a physical environment this volume might be coming from storage or a server. What is SNS. Confluence and Jira, Zoho CRM, Gmail, Gdrive for business, Dropbox and iCloud. EFS vs EBS Multi-Attach features. Amazon EBS is designed to store data in blocks (volumes of a provisioned size) attached to an Amazon EC2 instance, similar to a local disk drive on your physical machine. 1 protocols. Comparing EBS vs. Storage Gateway provides a standard set of storage protocols such as iSCSI, SMB, and NFS, which allow you to use AWS storage without rewriting your existing applications. Accessible via many EC2 machines and AWS services. 10 per GB for EBS), you only pay once per EFS file system. AWS EBS Volume Backup with EBS Snapshots; Cloning Amazon EBS Volumes: A Solution to the AWS EBS Cloning Problem; AWS EFS. Each pod will run a container called “efs-container” which will use an Nginx image. . 4 Answers. EBS and EFS both outperform Amazon S3 in terms of IOPS and latency. Block storage is a type of storage you use to store data files on Storage Area Networks (SAN) or on cloud platforms. What is Cloud File Storage? Amazon EFS is a fully. EBS : AWS Elastic Block Store S3 : Simple Storage Service EFS : Elastic File System. EBS appears as a mountable volume while the S3 requires software to read and write data. Next Steps. The volumes are provisioned in size and attached to EC2 instances in a way that’s similar to the local disk drive on a physical. Amazon EFS is easy to use and offers a simple interface that allows you to create and configure file. 30 per GB-month; Infrequent access storage: $0. EFS is effectively cheaper than EBS. EFS, EBS, and S3 are AWS’ three different storage types that are applicable for different types of workload needs. It seems to be the cheapest. Each service is uniquely different and priced accordingly. 4 Million) which may be good for some applications. Go to EFS from the main console and give a name for your EFS file system (optional)2. EBS volumes behave like raw, unformatted block devices. Faster than S3, slower than EbS. Google Cloud Filestore - High-performance, fully managed file storage. S3 Glacier Flexible Retrieval – Use for archives where portions of the data might need to be retrieved in minutes. AWS Storage S3 vs EBS vs EFS, Cuándo usar cada uno. Amazon S3 is the only service capable of locking objects to prevent an object from being deleted or overwritten. How to Send Notifications. AWS Backup. Filerobot. Jul 25, 2018 Open-Source FTP Alternative for Your Business. RDS / Aurora - Know how each RDS database differs from one another, and. Các tệp được lưu trữ trong S3 bucket có thể được truy cập bằng code hoặc trực. EBS can only be used by one EC2 instance at a time while S3 can be used by multiple instances. Part of AWS Collective. EFS stands for Elastic File System and is a file-level storage option for use with AWS. AWS S3 vs EBS vs EFS: Quick Comparison. Using an EFS file system, you can configure instances to mount the file system. However, in terms of performance, EBS and EFS are superior to S3, with stronger throughput and the lowest latency. Here are the key features and architectural benefits of each one: Amazon EBS . 9. This requires persistent storage, that is, storage that lives beyond the lifetime of the container, pod, or node. Find out in this report how the two Public Cloud Storage Services solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI. Block level storage intended for access by a single VM. gets deleted when instance is terminated. TutorialsS3 is cheaper than EBS and EFS in pure storage costs. Rabu, 23 November 2022. Tutorials Dojo Study Guide and Cheat Sheets - AWS Certified SysOps Administrator Associate by Jon Bonso and Lervin John Obando S3 vs EBS vs EFS 205 Amazon S3 vs Glacier 207 S3 Standard vs S3 Standard-IA vs S3 One Zone-IA vs S3 Intelligent Tiering 208 AWS DataSync vs Storage Gateway 209 S3 Transfer Acceleration. Both instance store and EFS can be root volume. EBS is block-level storage designed for Elastic Compute Cloud (EC2) instances. Amazon EBS vs. EBS vs. East (N. In this article we have given an introduction of the three very popular storage services on AWS namely - EBS, S3, and EFS. (Optional) The shared storage settings for the cluster. In this video AWS Storage - S3 vs EBS vs EFS Comparison we provide an extensive overview of AWS storage s3, AWS storage EBS, AWS storage EFS as part of our e. EBS is like a virtual hard disk drive in the cloud. Amazon Web Services (AWS) offers various storage options to cater to different requirements. When running stateful applications using Kubernetes, state needs to be persisted regardless of container, pod, or node crashes or terminations. Assume that your file system is located in the US East (N. Conclusiones. 30 for EFS. Conclusion. In general EBS will perform better than S3 (EBS has 4 variations - gp2, io1, st1, sc1). Amazon Elastic File System (EFS) is a set-and-forget, serverless, simple elastic file system which may be used with on-premises resources and AWS cloud services. EFS is much much more expensive than S3 for the purpose of just saving into it and read from it. is EBS or EFS a reliable way to store huge media files?AWS Storage options - - Difference between Object and Block storage - Use-cases and differences between S3, EBS & EFSFigure 4 — EBS vs EFS Let's Try! The following steps will have the EFS connecting two EC2 instances. Create custom user. AWS Storage S3 vs EBS vs EFS, Cuándo usar cada uno - Platzi. Crear cuenta. It provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently-accessible storage for up to thousands of Amazon EC2 instances. Root Volumes. EBS Volume. Store an unlimited number of files. We’re here to give you an overview of AWS storage, breaking down what Amazon S3, EBS and Glacier are designed for, how they’re different, while offering you guidance on when to use each service. EFS S3: -Provides developers and IT teams with secure, durable, highly scalable object storage – flat objects, static files -Amazon S3 is easy to use, with a simple web services interface to store and retrieve any amount of data from anywhere on the web -Cannot install an. This is. EFS blows way past S3 just in storage costs. S3 vs EBS vs EFS. An Amazon EFS file system is excellent as a managed network file. Amazon Web Services (AWS) offers various storage options to cater to different requirements. Each has its own strength and purpose. While EFS is a managed elastic file system designed for use across different machines and availability zones, EBS is designed as a fast and reliable block storage volume for single machines (although EBS multi-attach is an exception to this that applies only on very specialized scenarios). Well, before we compare them and see their differences, let’s open those three letters acronyms. As EBS storage is attached to the EC2 instance and is only accessible via that instance in the particular AWS region, it offers less latency than S3 which is accessed via the internet. EFS blows way past S3 just in storage costs. $0. Basic object storage that makes data available through an Internet. The top reviewer of Amazon EBS (Elastic Block Store) writes "A tool to deal with not only servers having low space but also the migration of servers". Multiple EC2 instances can access the same EFS store. An active EC2 instance can also create an AMI. e. This is why, in this article, we cover Amazon S3, Amazon EFS, and Amazon EBS storage options, and define the practical difference between them. File (network file system): Amazon EFS. 4 Million) which may be good for some applications. Las clases de almacenamiento de S3 se pueden configurar en el nivel de objeto y un solo bucket puede contener objetos almacenados en S3 Estándar, S3 Capas inteligentes, S3. EBS and EFS are faster than S3 as these are directly mounted on EC2. 三者ともAWSのストレージサービス。 ⭐️ EBSはデータベースやアプリケーション向けのストレージサービス。高速なI/O Throughput。 ⭐️ S3は静的webpage、マルチメディアの分配. Amazon EFS is priced according to the volume of storage, the storage tier (Standard or Infrequent Access), the level of redundancy, and the amount of provisioned throughput. If you enjoyed this content, please lets us know in the comments. Some of the features offered by Amazon EBS are: Amazon EBS allows you to create storage volumes from 1 GB to 1 TB that can be mounted as devices by Amazon EC2 instances. A file storage layer is needed that can share between instances and scale the platform more easily. Best Practices - Persistent storage. No tienes acceso a esta clase. EBS is like a virtual hard disk drive in the cloud. AWS Container Service AWS ECR (Elastic Container Registry) AWS ECS AWS EKS (K8s) AWS Fargate AWS Elastic Beanstalk. The deciding factor between AWS storage options most likely comes down to how much you can afford to pay for storage performance that fits your needs. ( However it’s easy to add more storage to your EBS volumes, it requires some engineering, which means you always “overpay” your EBS storage, which makes it. . When replicating backup files in S3 to a DR region, you can choose the S3 Standard-Infrequent Access (S3 Standard-IA) tier in the DR region, to store your backups at a lower cost in the DR region. . It is a file storage connected with one or more instance. EFS, EBS, and S3 are AWS’ three different storage types that are applicable for different types of workload needs. Whereas EBS wouldn’t scale automatically. →最大数千の ec2 インスタンスからの同時アクセスが可能. EFS Performance S3 EBS EFS Type Object Storage Block Storage File Storage Storage Cost ~$0. With io1 you get to specify IOPS capabilities (S3 has no user specified performance control). . ) AWS has an embedded mechanism for the Amazon EBS volumes backup. Conclusiones. Snapshots are incremental backups, meaning only the blocks on the device that have. The AWS Elastic File System (EFS) is one of Amazon’s three primary storage solutions. 025-$0. Store, Process and Accelerate Images, Videos, JS, CSS and Static Content across the World on any Web application. (Learn more about EBS storage type in our comparison of Amazon S3 vs EBS vs EFS.