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Hitachi snapshot user guide

Hitachi Virtual Storage Platform Hitachi Copy-on-Write Snapshot User Guide FASTFIND LINKS Document Organization Product Version Getting Help Contents MK- RD - C ? - Hitachi Ltd All rights reserved No part of this publication may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording or stored in a database or retrieval system for any purpose without the express written permission of Hitachi Ltd Hitachi Ltd reserves the right to make changes to this document at any time without notice and assumes no responsibility for its use This document contains the most current information available at the time of publication When new or revised information becomes available this entire document will be updated and distributed to all registered users Some of the features described in this document might not be currently available Refer to the most recent product announcement for information about feature and product availability or contact Hitachi Data Systems Corporation at https portal hds com Notice Hitachi Ltd products and services can be ordered only under the terms and conditions of the applicable Hitachi Data Systems Corporation agreements The use of Hitachi Ltd products is governed by the terms of your agreements with Hitachi Data Systems Corporation Notice on Export Controls The technical data and technology inherent in this Document may be subject to U S export control laws including the U S Export Administration Act and its associated regulations and may be subject to export or import regulations in other countries Reader agrees to comply strictly with all such regulations and acknowledges that Reader has the responsibility to obtain licenses to export re-export or import the Document and any Compliant Products Hitachi is a registered trademark of Hitachi Ltd in the United States and other countries Hitachi Data Systems is a registered trademark and service mark of Hitachi Ltd in the United States and other countries Archivas Essential NAS Platform HiCommand Hi-Track ShadowImage Tagmaserve Tagmasoft Tagmasolve Tagmastore TrueCopy Universal Star Network and Universal Storage Platform are registered trademarks of Hitachi Data Systems Corporation AIX AS DB Domino DS DS Enterprise Storage Server ESCON FICON FlashCopy IBM Lotus MVS OS RS S System z System z Tivoli VM ESA z OS z z zSeries z VM and z VSE are registered trademarks or trademarks of International Business Machines Corporation All other trademarks service marks and company names in this document or website are properties of their respective owners Microsoft product screen shots are reprinted with permission from Microsoft Corporation ii Hitachi Virtual Storage Platform Hitachi Copy-on-Write Snapshot User Guide CContents Preface ix Intended audience x Product version x Document revision level x Referenced documents x Changes in this revision xi Document organization xi Document conventions xii Convention for storage capacity values xiii Accessing product documentation xiii Getting help xiv Comments xiv Overview of Copy-on-Write Snapshot - Copy-on-Write Snapshot software - How Copy- on-Write Snapshot works - Volume pairs P-VOLs and V-VOLs - Data pools - Components - Licenses and capacity