Dell emc ecs data sheet

Organizations require options for consuming public cloud services with the reliability and control of a private-cloud infrastructure. Dell EMC ECS and HDFS. Watch Video. Capacity begins at 230TB and scales up to 2. In other general usages, use of a load balancer is highly recommended for access to ECS Nodes. With the OneFS AutoBalance function, you can quickly and easily add nodes without downtime, manual data migration, or application logic reconfiguration, saving precious IT resources. Jump to: Overview Datasheet Manufacturing Parametric Crosses. O. For additional information on the supported ECS Object Services, refer to: ECS Amazon S3 Object Service API Support. Figure 1. or its subsidiaries. PDF . Because of ECS data protection, when a disk fails, copies of the data that was once on the disk are re-created on other disks in the system. DNS round robin is not an acceptable load balancing method for Data Domain/ECS Cloud Tier. Drivers & Downloads. Solution architecture. See direct product comparisons, third-party competitive research, compelling blogs, and customer stories across our storage portfolio. Find top knowledge base articles, manuals, videos, how-to Jan 6, 2023 · Note: ADO can be changed after bucket creation but the assigned replication group cannot be changed after bucket creation. Unlock GPU Potential for Large-Scale Training. THE TRACEWELL. Jan 30, 2024 · Supports the monitoring of ECS on a day-to-day basis. ECS is currently in its third generation of hardware appliances, the EX-Series, building on the legacy of the EMC Centera and Atmos object storage platforms that predated ECS. ECS provides exabyte scalability with support for a globally distributed object infrastructure. 6PB, the EX500 is a versatile option for Feb 9, 2024 · Replace the disk. 0 PDF. Expanding its software-defined options, ObjectScale is now Data Sheet Dell PowerProtect Data Domain Build your cyber resilient foundation on the #1 backup appliance. Typically, 65:1 data reduction. l EMC Atmos l OpenStack Swift l ECS CAS (content-addressable storage) For more information about object user tasks, see the ECS Data Access Guide, available from the ECS Product Documentation page. Reduce IT complexity and strengthen cyber resiliency across various IT environments for organizations of all sizes. NetWorker is available as part of Dell Data Protection Suite, which offers Sep 30, 2019 · Today, we make Dell ECS more powerful and build on our long legacy of innovation with new hardware and software updates. Innovate faster, at any scale, with a global namespace, strong S3 compatibility and enterprise-class security that’s ready on day one. In Atmos, the equivalent of a bucket is a subtenant; in Swift, the equivalent of a bucket is a container, and for CAS, a bucket is a CAS pool. com, a global distributor of electronics components. Once a disk has been identified as bad by the ECS system, it cannot be reused anywhere in the ECS system. 0 only enhances the experience for developers with a containerized download, free for test-and-dev environments (non-production use today). ECS (Elastic Cloud Storage) is a modern software-defined object storage platform designed for both traditional and next-generation workloads that provides organizations with an on-premise alternative to public cloud solutions. 94PB per rack. NetWorker protects both physical and virtual environments, including VMware and Microsoft Hyper-V, as well as cloud workloads on AWS, Microsoft Azure and Google Cloud. Step 4. Taxes, shipping, and other fees apply. Data Lake. 1 Step 1: Create a bucket in ECS to store the snapshot data. For the eighth consecutive year, Dell Technologies named a Leader in the 2023 Gartner® Magic Quadrant™ for Distributed File Systems and Object Storage. Some parts of ECS software run on all nodes and some run on one or some nodes. To demonstrate how Dell EMC networking ensures quality of service in a converged environment, congestion is created on the links between the leaf and spine (port-channels. 1. 1 PDF . The perfect blend of economy and density, the EX500 injects greater flexibility into the Dell ECS portfolio. Cost-effective at scale : Build an object storage cloud with up to 76% lower TCO 2. Reference the ECS Administration Guide for detailed information on creating buckets. ECS EX500 ECS EX5000 ECS EXF900 The perfect blend of economy and ECS: Overview and Architecture. The current EX-Series appliances support clusters ranging from 60TB to 11. 2 SP1). Jul 14, 2015 · ECS 2. PowerProtect DD can natively tier deduplicated data to any supported cloud environment for long-term retention with Dell EMC Cloud Tier. The 2-socket, 2U platform has the optimum balance of resources to power the most demanding environments. In the server URL box, try and use LDAP instead of LDAPS for testing, if possible. This platform starts at 230TB RAW minimum configuration and scales to 5. In S3, containers are called buckets and this term has been adopted by ECS. Delivering remarkable scalability, flexibility and resiliency, ECS empowers organizations to Dell EMC Networking RoCE v2 Reference Environment. ECS Appliance Hardware Gen2 U-Series. PowerStore delivers 5x better data density than Pure FlashArray//X20. ) Dell ECS is a cloud-scale, object-storage platform for traditional, archival, and next-generation workloads. Supports the monitoring of ECS on a day-to-day basis. Why PowerProtect Data Domain Fast • Up to 38% faster backups2 • 2Up to 44% faster restores • 2Up to 58% faster replication • Instant access and instant restore of up to ECS: cloud storage for IT. 89PB RAW per rack. For long term retention to cloud environments, Cloud Tier allows data to be natively tiered to public, private or hybrid clouds. The data movement feature only supports IAM accounts and IAM buckets. 0 (ECS 3. To configure an existing application to talk to ECS, or develop a Oct 2, 2019 · The latest software update is version 3. With support for protocols like NFS, SMB, S3 and HDFS, you can simultaneously run applications that require file and object protocols in the same namespace. Data Access Guide. The PowerEdge R740 was designed to accelerate application performance leveraging accelerator cards and storage scalability. such as those related to power and cooling. It is recommended to act if the 80% ETA is Buckets are containers for objects created in a namespace and sometimes considered a logical container for sub-tenants. 36TB NVMe SSD drive options. In addition to accelerated backup and recovery, this next generation of the Integrated Data Protection Appliances (IDPA) provides replication, deduplication and instant access and restore with tight VMware integration. 10 & 20). Unstructured data is at the heart of a digital future ObjectScale is high-performance containerized object storage built for the toughest applications and workloads—Generative AI, analytics and more. Learn how ECS Connection Manager provides the availability, scalability, and optimization for Dell ECS. In either type of DELL EMC ECS APPLIANCES . 6. The components running Dell may impose a purchase quantity limit (for example, 5 units per order). As if LDAP does not work, then surely LDAPS will not either. Overview. The OneFS NAS operating system provides enhanced performance with massive scalability to support the most demanding file-based workloads, while enabling you to reduce data center footprint and optimize storage resources. For Data Domain Cloud Tier to ECS, a load balancer is required. 5. com的EMC官方中文文档资料（多为PDF下载），按发布时间倒序排序。大家可以在浏览器里按Ctrl + F键进行页面内的关键字查询。部分文档的标题和摘要未来得及汉化，但后台的PDF文档确实是中文版的。这个帖子的首帖每月会更新1-2次，以加入新汉化完成的EMC官方中文 Solution architecture. Note, it is to minimize the complexity. Dell Technologies Partner Portal 2017 Dell EMC Proven Professional Knowledge Sharing 11 Figure 4 - ECS Architecture Overview Data and Meta Data Object is the smallest storage unity of an Object based storage system. 2. It is packaged and sold as an integrated solution that incorporates both HW and SW. 2 Dell EMC ECS Data Access Guide, for the Object Lock API examples, see the section “Object Lock API Examples”; for the list of supported S3 APIs, see the section “S3 API supported and unsupported features”. It can be deployed via multiple models: Software defined; Appliance based; Managed Service from Dell EMC ECS Mar 28, 2022 · ObjectScale builds on the trusted, proven Dell EMC ECS codebase and takes it to the next level. Up to 8 x 7 mm SATA SSD (4 supported for NVMe SSD) Apr 18, 2023 · The data movement feature allows copying object data to an external S3 target. 6. Unlike files and blocks Object is the combination of data itself plus certain attributes that describes the data. 5 PB. • Dell PowerScale Data Sheet PowerScale Acclimation Video Are you new to PowerScale? If so, we highly encourage you to watch this eleven-minute video to become familiar with hardware basics, software basics, and what to monitor to get the most out of your investment. The storage broker has been designed to support the Open Storage Broker specifications and is distributed under an opensource licensing and support model. Dell Technologies ECS Info Hub organizes ECS documentation, videos, and user-contributed content into topic areas, which makes it easy to find content. For help getting started with the ECS Management API, refer to: ECS Management REST API. Power your innovation with a universal storage layer. ECS Appliance a modern storage platform to bridge traditional and modern workloads. Dell ECS is a software-defined, cloud-scale, object storage platform that delivers S3, Atmos, CAS, Swift and NFSv3, storage services on a single, modern platform. Either hardware or software load balancing technology may be used. HDFS is a widely used big data component that has a file system abstraction, which makes it easier for developers to use as a storage engine. OneFS software can run on a variety of hardware, handle any unstructured data, and deploy anywhere – in the datacenter, at The Dell EMC S5148 switch is an innovative, future-ready Top-of-Rack (ToR) open networking switch providing excellent capabilities and cost-effectiveness for the enterprise, mid-market, Tier2 cloud and NFV service providers with demanding compute and storage traffic environments. This document provides an in-depth architecture overview of Dell ECS, a software-defined, cloud-scale, object storage platform. Associated orchestration occurs directly within the Gain trusted technology: ObjectScale is built from the same codebase as Dell ECS and inherits its trusted, enterprise proven pedigree. Designed for modern application development, management and analytics, ECS supports next-gen web, mobile and cloud applications. Updated: 06-15-2021. To support D@RE, ECS maintains a hierarchy of encryption keys where a parent key in the hierarchy is used to protect a child key. ECS EX500 ECS EX5000 ECS EXF900 The perfect blend of economy and 6. Dell EMC 40U Rack based solution 8 node configurations HA Power Multiple Storage Configurations Unstructured storage up to 7,840TBper rack ECS Appliance Gen-2 D-Series Detailed Specifications Features ECS-D4500 ECS-D5600 ECS-D6200 ECS-D7800 ARCHITECTURE Standard 40U deep cabinet 2U 4-node server enclosure ECS Appliance. Support uninterrupted model training and prevent GPU idling with up to 300 PBs of storage to Apr 18, 2024 · Table 1 - Software documentation links for ECS. ADVANTAGE. With ECS, administrators can easily VMware Cloud, Google Cloud Platform and Alibaba Cloud, and Dell EMC ECS to deliver excellent in-cloud data protection at reduced costs. TECHNOLOGY LEADERSHIP. Fast S3: Support modern workloads with ECS is an excellent option for secondary or tiered storage, enabling organizations to move infrequently accessed data away from more expensive primary storage. Each enclosure helps you leverage SC Series technology advantages, such as Federation, Intelligent Data Reduction and RAID tiering to lower costs and save storage space. Dell EMC's ECS EX500 is an intel x86 network server. Send Feedback. "Our Dell Technologies infrastructure provides data in a Go to the ECS UI > Authentication Provider and set up an Authentication Provider to 1 AD or LDAP server with one server url. Find system alerts, service events, top 0 /3000 characters. Fast S3: Support modern workloads with Sep 29, 2023 · Conclusion. 5-inch drives. It enables businesses to embrace digital transformation and realize faster Best of all, ECS is a system you can trust. Once the content is migrated, the following steps make it accessible (read/delete only) to Veritas Enterprise Vault on the ECS system. PowerProtect Data Manager can be combined with PowerProtect appliances to maximize performance and scalability. Delivering remarkable scalability, flexibility and resiliency, ECS empowers organizations to S3. Provides reference information for the. Features. As the leader in object security1 and the first provider to deliver a commercial CAS-based system: EMC Centera, Dell Technologies has decades of experience in unstructured data storage. ECS platform Overview EXF900 – The EXF900 is an all flash object storage solution of hyper-converged nodes for low latency and high IOPs ECS deployments. The MX9116n also supports the open source Open Network Install Environment (ONIE) for zero touch installation of alternate operating systems in future ECS Appliance Hardware Gen3 EX300. S. Some aspects of bucket addressing and authentication are specific to ECS. It provides geo-distributed and multi protocol (object, HDFS, and NFS) access to data. Download PDF. Spark programmatically reads and writes data from and into ECS. Fast S3: Support modern workloads with Jun 1, 2015 · 在这里整理和索引了目前所有来自EMC. 2 and higher will have a larger chunk size when writing to the ECS Cloud which will result in a better storage efficiency on the ECS. REST API Reference Use the ECS Management API to configure, manage, and monitor ECS. The software now includes capabilities such as security technical implementation guide Jun 15, 2021 · Dell EMC PowerEdge R740 Spec Sheet. The containers are isolated but share the underlying operating system resources and hardware. (excludes Alaska and P. Describes new features, known and fixed issues, and other supplemental information Dell EMC PowerEdge server platform R450 R650 R750 R750xa Hypervisor boot Boot Optimized Storage Solution - 2 x M. It is architected to provide enterprise availability with automatic failure detection and self-recovery options built in. Describes the protocols supported by ECS for end-user access to ECS object storage: Amazon S3, EMC Atmos, OpenStack Swift, and the Centera (CAS) object APIs and introduces the ECS Management API. ECS requires a minimum of five nodes with using the default of 12+4, the resulting 16 segments are dispersed across nodes at the local site. It can be accessed through ECS Object Lock APIs. An ECS deployment offers a turnkey appliance with industry-standard hardware that you can use to form the hardware infrastructure. The first section of this tab shows a trend which is based on 1, 7, and 30-day historical averages. REST API Reference Dell EMC ECS, an enterprise-grade object storage platform, empowers your organization to flexibly capture, store, protect and manage unstructured data at public cloud-like scale, all within the confines of your organization’s data center. The Amazon S3 Object Service is available on the following ports: Table 1 S3 Object Service Protocol Ports HTTP 9020 HTTPS 9021 S3 API supported and unsupported features ECS supports a subset of the Amazon S3 REST API. This 3rd Generation object-based solution from Dell EMC delivers enterprise class smart storage built for the next generation of applications and workloads. Capacity scales up to 1. fr--alert-info-cir. 7. Orchestrate protection directly through an intuitive interface and secure data with the latest capabilities for operational and cyber Mar 22, 2021 · We have moved! Visit our new location on the Dell Technologies Info Hub where you can find the latest technical content for Dell ECS and ObjectScale. Dell PowerScale Data Sheet 2023 Dell Inc. Box addresses). Dell EMC® ECS™ Appliance is a multi-purpose, software-defined cloud-storage platform. Link: Dell PowerScale Welcome Video Dell PowerScale Specification ECS: cloud storage for IT. PowerStore intelligently automates with 5x better data density. Figure 1 shows the data movement solution architecture. 7u3 and 7. This service is temporarily unavailable. PowerVault is a low-cost SAN and DAS block storage solution that delivers enhanced performance, expandable capacity, and simple integrated management. Easy to deploy Load Balancer for Dell EMC ECS. It is built on the ECS Sync open-source tool, which provides the capability to copy data in parallel. ECS can be used by big data ecology and can replace HDFS. Dell EMC ECS is a powerful and versatile object storage platform that can help organizations of all sizes to manage and protect their data more effectively. 84TB, 7. Deployable as a software-only model or a turnkey appliance, ECS boasts unmatched scalability, performance Dec 8, 2022 · Instructions. 0. With options for 12 or 24 drives, 3. Since PowerScale storage is so easy to manage, it The unmatched efficiency of the storage systems. Select a Model. Best of all, ECS is a system you can trust. ECS appliances enable organizations to deliver scalable object storage from on-premises data centers. Can deploy in 15 minutes. CLM-000884 2Based on a Dell Technologies survey of CloudIQ users conducted May-June 2021 ECS is a cloud-scale, object storage platform designed to allow all the benefits of public cloud storage to be realized within private data centers cost-effectively. 6 Based on Dell internal analysis using publicly available specs in August 2023 comparing maximum effective capacity for PowerStore 1200 and FlashArray //X20. This has been another milestone in providing free and frictionless access to EMC software (along with the open-sourced CoprHD and free download of ScaleIO ). Data is stored in ECS using the Delta Lake open table format. Provides a summary of new features and changes in ECS 3. Free shipping offer valid only in Continental U. The data and coding segments of each chunk are equally distributed across nodes in the cluster. The PowerProtect DP series appliances is the integrated appliance solution from the PowerProtect appliances portfolio. For more information about System Monitor tasks, see the ECS Monitoring Guide, available from the ECS Product Documentation page. Note Mar 3, 2023 · ECS runs on top of the operating system as a Java application and is encapsulated within several Docker containers. Summary of how data is stored is as follows: Feb 21, 2024 · The Capacity tab explains the ECS capacity trend projection, and the History button show ingest rates historically. It is simple to manage, deploy and upgrade, and grows in place from 24TB to 96TB—all with license keys and no additional hardware ECS EXF900: Built with NVMe-based SSDs on Dell EMC PowerEdge servers, the EXF900 appliance delivers extreme performance at scale for modern workloads such as AI, machine learning, IoT and real-time analytics applications. 1 Patch Release Notes. Inherently flexible, NetWorker helps you deploy and leverage the data protection that fits your needs. ECS EX500 ECS EX5000 ECS EXF900 The perfect blend of economy and 2. A port-channel sized at 20GbE is configured between the leaf and spine interlinks. It shows the estimated days to 50% (if the system is below that level), and for 80%. Describes the protocols that are supported by ECS for end-user access to ECS object storage: Amazon S3, EMC Atmos, OpenStack. 3, these keys were natively managed by ECS across the geo-federated environment. With enterprise-class data protection and compliance capabilities, coupled with an ecosystem of services from Dell Technologies, ECS helps you do more with data at a lower TCO. The ECS and Kemp LoadMaster solution offer high availability, scalability, efficiency, performance and site resilience for customers next-gen software defined storage. PowerProtect DD provides fast disaster recovery with orchestrated DR and Feb 22, 2024 · Monitoring Guide. ecs-appliance-software-without-encryption | ECS 3. The Dell EMC™ ECS™ platform has been designed to address both the capacity and availability needs of today’s enterprises. Navigate to Networking > Load Balancing > Virtual Servers and add a new L7 HTTP virtual server. Before ECS version 3. SC Series expansion enclosures also help lower power requirements and protect your data with high-efficiency, hot-swappable power supplies and advanced cooling. The following figure shows a node Amazon S3 API support in ECS ECS supports the Amazon Simple Storage Service (Amazon S3) Application Programming Interface (API). 3. At a low cost to protect. With the flexibility of the OneFS software, it 10+2 (Cold archive) - Chunk is broken into 10 data segments. Documentation. Dell reserves the right to cancel orders arising from pricing or other errors. The S5148F-ON 25GbE switch is Dell EMC’s latest disaggregated The IDPA DP4400 offers converged data protection in a 2U, Dell EMC PowerEdge 14G Server platform that combines protection storage and software, search, analytics and cloud readiness—in a single appliance. Two coding segments are created. Dell PowerScale Data Sheet 2024 Dell Inc. Dell EMC ECS supports Data at Rest Encryption (D@RE) that can be enabled at the namespace and bucket levels. Actual results may vary. 5PB per rack. Offer not valid for Resellers. Trusted by 16,000+ customers – with 1,500+ running GPU workloads – PowerScale is proven to make your data actionable for your AI use cases with Dell's integrated and validated end-to-end portfolio. 68TB, and 15. This DD OS should be paired with ECS 3. in the servers, network servers category. Existing Dell EMC Centera systems can be refreshed by implementing a Dell EMC ECS solution and migrating Centera content to ECS storage. Tiering aging data automatically to the cloud helps meet compliance regulations, reduce your on-premises data footprint and lower your overall IT costs. Built in partnership with Dell Technologies, Tracewell platforms are electrically identical to standard, off-the-shelf Dell products but are designed and engineered to . Regardless of the number of nodes in your cluster, PowerScale OneFS allows you to store and manage many petabytes of data with a single admin. Describes new features that are known, and fixed problems, and other supplemental information for ECS 3. ECS supports the S3 API and the extension, this section provides information about authenticating with the service, and using the Software Development Kit (SDK) to develop clients to access the service. Modern applications. Advisories. The PowerEdgeXE7100 is an ultra-dense 5U enclosure that can support up to two independent two-socket (2S) sleds and 100 x 3. The EX300 is the new ECS starter edition that lowers starting capacity of a cluster by 85%, making it a perfect storage platform for cloud native apps. The first step is to create a bucket to store the snapshots. According to Dell, the goal of this update is to enable organizations to ensure enterprise readiness, enhance data visibility, improve storage efficiency and deploy EX500 appliances. ECS EMC Atmos Object Service API Support. Dec 26, 2023 · ECS EX500 By Dell EMC. In the current situation, some designs of HDFS on append upload and atomic rename still have some challenges for storage. Tracewell platforms offer a powerful combination of enterprise-class products from Dell Technologies and a heritage of proven form factor engineering. ECS as its basis to deliver a new software-defined, microservices-based architecture using Kubernetes. Dell Technologies now offers two complementary enterprise-class object storage options: ECS great for traditional workloads/applications and The Dell EMC Networking MX9116n is a high-performance, multifunction, 25GbE Fabric Switching Engine purpose-built for applications in demanding data center, cloud and computing environments. 4 of the Dell EMC ECS software. The PowerEdge XE7100 enclosure supports the following drive configurations: Up to 100 x 3. Fast S3: Support modern workloads with Sep 24, 2021 · There is no ECS user interface for Object Lock. Experience modern data protection with an integrated appliance based on PowerProtect Data Manager. Data Centers Primary Data Center For CloudIQ technical information, demonstration videos, third-party reviews, and case studies, go to: dell. Easy to configure and manage, the PowerProtect Data Manager Appliance provides a unified user experience and automates discovery and protection of databases, VMs, file systems and Kubernetes containers. Describes the protocols that are supported by ECS for end-user access to ECS object storage: Amazon S3, EMC Atmos, OpenStack Swift, and the Centera (CAS) object APIs and introduces the ECS Management API. Introduction. For detailed documentation on how to install, configure and manage your ECS system, visit ECS online documentation. ECS provides a complete software-defined strongly-consistent, indexed, cloud storage platform that supports the storage, manipulation, and analysis of unstructured data on a massive scale. A bad disk only represents a loss of capacity to the system--not a loss of data. The ECS EX-Series is comprised of three unique hardware products: EX500, EX5000 and the all-flash EXF900. Whether you’re protecting applications and data residing within your data center or the public cloud, NetWorker provides the same enterprise-level user experience. Dell ECS is used as an external storage location for Databricks. (In the 3. 1 Administration Guide | overview. Describes the APIs you can use to configure, manage, and monitor ECS. Easy to configure and manage, the PowerProtect Data Manager Appliance delivers a modern software-defined architecture, provides secure operational and cyber resilience, and a simple unified user experience. Fast, efficient and secure. Dell ECS EX500 Appliance. 0u2, Hyper-V 2019 (750-14 ONLY) Support Hardware: 1 - 7 year Dell EMC ProSupport or ProSupport One; software support provided by Nutanix This white paper elaborates on the case where Dell ECS is set up in Faction. 294K. Fast S3: Support modern workloads with 9 Dell ECS: Storage Broker Installation Guide | H18532 Installing the ECS storage broker The ECS Storage Broker is a tool created by Dell Technologies to operate with the Dell ECS product. Efficient, secure, multicloud solutions for your data from the #1 provider of enterprise storage. Some resources are permission-based and can only be accessed with a corporate account. Check part details, parametric & specs updated 26-DEC-2023 and download pdf datasheet from datasheets. Centera enables applications using network file protocols (NFS, CIFS, FTP, and HTTP) to store and retrieve fixed content from Centera. Because the external data is not known to Databricks metastore, the For Data Domain Cloud Tier to ECS, a load balancer is required. Leverage the data protection that fits your needs best: deduplication, backup to disk and tape, snapshots, replication, and NAS protection, wherever your data may reside. 4. With its scalability, performance, and security features, ECS is a great choice for a wide range of workloads, including modern applications, AI, ML, big data analytics, and more. cloudiq 1 Based on a Dell Technologies survey of CloudIQ users conducted May-June 2021. This can be done using the ECS Web Portal, ECS API or an S3 client such as S3 Browser. With rack capacity that can scale from 480TB to 4. com. PowerVault ME5 storage systems effectively handle the data-intensive demands of high-performance compute (HPC). 1. 5-inch SAS or SATA drives. Swift, and the Centera (CAS) object APIs and introduces the ECS Management API. Create a virtual server for NSX-T terminated SSL connectivity to ECS. Futures: DD OS 6. 2 internal with Internal BOSS card Hypervisor options Nutanix AHV, VMware ® ESXi™ 6. Enter the virtual server information specifying 443 as the port, select the load balancer and pool to use. Client access protocols include S3, with additional Dell EMC extensions to the S3 protocol, Dell EMC Atmos, Swift, Dell EMC CAS (Centera), NFS, and HDFS. vs ns sy gr wp pq fe yw ww do