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Open Replicator/FLM Fundamentals

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Open Replicator/FLM Fundamentals Welcome to Open Replicator/FLM Fundamentals. Copyright © 1996, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 EMC Corporation. All Rights Reserved. EMC believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED “AS IS.” EMC CORPORATION MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Use, copying, and distribution of any EMC software described in this publication requires an applicable software license. EMC2, EMC, Data Domain, RSA, EMC Centera, EMC ControlCenter, EMC LifeLine, EMC OnCourse, EMC Proven, EMC Snap, EMC SourceOne, EMC Storage Administrator, Acartus, Access Logix, AdvantEdge, AlphaStor, ApplicationXtender, ArchiveXtender, Atmos, Authentica, Authentic Problems, Automated Resource Manager, AutoStart, AutoSwap, AVALONidm, Avamar, Captiva, Catalog Solution, C-Clip, Celerra, Celerra Replicator, Centera, CenterStage, CentraStar, ClaimPack, ClaimsEditor, CLARiiON, ClientPak, Codebook Correlation Technology, Common Information Model, Configuration Intelligence, Configuresoft, Connectrix, CopyCross, CopyPoint, Dantz, DatabaseXtender, Direct Matrix Architecture, DiskXtender, DiskXtender 2000, Document Sciences, Documentum, elnput, E-Lab, EmailXaminer, EmailXtender, Enginuity, eRoom, Event Explorer, FarPoint, FirstPass, FLARE, FormWare, Geosynchrony, Global File Virtualization, Graphic Visualization, Greenplum, HighRoad, HomeBase, InfoMover, Infoscape, Infra, InputAccel, InputAccel Express, Invista, Ionix, ISIS, Max Retriever, MediaStor, MirrorView, Navisphere, NetWorker, nLayers, OnAlert, OpenScale, PixTools, Powerlink, PowerPath, PowerSnap, QuickScan, Rainfinity, RepliCare, RepliStor, ResourcePak, Retrospect, RSA, the RSA logo, SafeLine, SAN Advisor, SAN Copy, SAN Manager, Smarts, SnapImage, SnapSure, SnapView, SRDF, StorageScope, SupportMate, SymmAPI, SymmEnabler, Symmetrix, Symmetrix DMX, Symmetrix VMAX, TimeFinder, UltraFlex, UltraPoint, UltraScale, Unisphere, VMAX, Vblock, Viewlets, Virtual Matrix, Virtual Matrix Architecture, Virtual Provisioning, VisualSAN, VisualSRM, Voyence, VPLEX, VSAM-Assist, WebXtender, xPression, xPresso, YottaYotta, the EMC logo, and where information lives, are registered trademarks or trademarks of EMC Corporation in the United States and other countries. All other trademarks used herein are the property of their respective owners. © Copyright 2013 EMC Corporation. All rights reserved. Published in the USA. Revision Date: July, 25 2013 Revision Number: MR-1WP-EORS.5876.4.4 Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 1 This course provides an introduction to the Open Replicator application. It also includes an overview of Open Replicator architecture, features, functionality and how Open Replicator is used to perform a Federated Live Migration. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 2 Upon completion of this course, the student should be able to provide an overview of Open Replicator. Also, the student will be able to identify Open Replicator management software offerings, and describe Open Replicator’s business benefits and considerations. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 3 This module covers an overview and the benefits of the Open Replicator application. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 4 EMC’s Symmetrix Open Replicator provides a method for copying device data from various types of arrays within a Storage Area Network (SAN) to or from a Symmetrix DMX or VMAX array. Symmetrix Open Replicator is a tool that can be used to migrate data from older Symmetrix arrays, CLARiiON or VNX arrays, and certain third-party storage arrays to a DMX or VMAX. Data migrations can be very complex projects, and require careful planning. Failure to identify and perform necessary steps can result in data unavailability or data loss. Open Replicator operations are controlled from a local host attached to the Symmetrix DMX or VMAX Family array. Data copying is accomplished as part of the storage system process and does not require host resources. The data can be copied online between the Symmetrix array and remote devices, allowing host applications, such as a database or file server, to remain operational during the copy process. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 5 The Symmetrix Open Replicator command symrcopy provides a method for copying device data from various types of arrays within a Storage Area Network (SAN) infrastructure to or from a Symmetrix VMAX storage array. For example, Symmetrix Open Replicator is used to migrate data from older Symmetrix arrays, CLARiiON arrays, and certain third-party storage arrays to a new Symmetrix VMAX storage array. Data migrations are often complex operations and require careful planning and execution of predetermined procedures. Failure to identify and perform necessary steps, or work within supported configurations can result in data being unavailable or lost. For detailed interoperability information, refer to the E-Lab Interoperability Navigator (http://elab navigator.EMC.com). Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 6 Rather than using the terms “source” and “target,” which might be confusing in the Open Replicator context, we use the terms “control” and “remote,” where the Control Device always resides on the Symmetrix running Open Replicator. The Remote Device is passive and does not require any software. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 7 Open Replicator copy direction is defined by push and pull. A push sends data from the Control Symmetrix to the remote storage array. A pull fetches data from the remote storage array to the Control Symmetrix. An incremental copy is an option that only copies changed tracks since the last activate. This is only available during a push operation. Open Replicator does not depend on the device geometry of the Remote Device. There are no restrictions related to RAID types or striping. For example, a striped RAID 1 metavolume can transfer data to a concatenated RAID 5 metavolume. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 8 Hot or cold refers to the state of the Control Device during an operation. A hot state means the Control Device is read/write online to the host while the copy operation is in progress. A cold state means the Control Device is not ready to the host (offline) while the copy operation is in progress. To ensure data integrity, the data on the remote array should not be changed during an Open Replicator session. While the host running the Open Replicator commands does have visibility to the Symmetrix devices, it does not see or control the Remote Devices. During a hot push or pull, the Control Device may be read/write enabled. During a cold push or pull, the Control Device is set to a “User Not Ready” state. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 9 Throttling allows users to limit SAN bandwidth usage by Open Replicator. If left unchecked, Open Replicator consumes the full bandwidth of the SAN. It performs very fast, which could be a problem if the SAN is being shared by hosts performing I/O to the local volumes on the Controlling Array. Pace values range from zero (0) to nine (9). A pace of zero (0) means that the session is not throttled at all. The default pace for an Open Replicator session is five (5). Ceiling values range from zero percent (0%) to one hundred percent (100%). A zero percent (0%) setting on the port indicates the port will not be used for Open Replicator. A one hundred percent (100%) setting on the port allows Open Replicator full bandwidth usage, if necessary. The default ceiling value is None, which means that an Open Replicator session will be regulated by the Pace setting. Copyright © 2013 EMC Corporation. Do not copy - All Rights Reserved. Open Replicator / FLM Fundamentals 10 When an Open Replicator session is created, the Symmetrix marks the tracks on the devices participating in the session. These tracks are considered protected, which means that after activation, these tracks must be moved to or from the Control Device. Access to the tracks is only permitted once the tracks have been moved. Activation is the step that marks the point-in-time when the data is secured. If background copy is enabled, data transfer will start immediately after activation. This is the default action. If background copy is not enabled, data transfer is undertaken only when the host on the Symmetrix tries to change the protected data. The recreate action is similar to a create action. However, only tracks that have changed since the last activation are protected. It is only permitted if the session was created as a differential session. The terminate action ends the Open Replicator session. The information about the session is deleted, and the relationship between the Control and Remote Devices is terminated.
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