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Ams system guide Hitachi AMS Storage System Hardware Guide FASTFIND LINKS Document organization Release notes and readme Getting help Table of Contents MK- DF EN- C ? - Hitachi Ltd All rights reserved No part of this publication may be reproduced or trans

Hitachi AMS Storage System Hardware Guide FASTFIND LINKS Document organization Release notes and readme Getting help Table of Contents MK- DF EN- 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 and Hitachi Data Systems Corporation hereinafter referred to as ??Hitachi ? Hitachi Ltd and Hitachi Data Systems reserve the right to make changes to this document at any time without notice and assume no responsibility for its use Hitachi Ltd and Hitachi Data Systems products and services can only be ordered under the terms and conditions of Hitachi Data Systems' applicable agreements All of the features described in this document may not be currently available Refer to the most recent product announcement or contact your local Hitachi Data Systems sales o ?ce for information on feature and product availability Notice Hitachi Data Systems products and services can be ordered only under the terms and conditions of Hitachi Data Systems ? applicable agreements The use of Hitachi Data Systems products is governed by the terms of your agreements with Hitachi Data Systems 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 in the United States and other countries All other trademarks service marks and company names are properties of their respective owners Export authorization is required for the AMS Data At Rest Encryption ? Import Use regulations may restrict export of the AMS SED to certain countries ? China ?? AMS is eligible for import but the License Key and SED may not be sent to China ? France ?? Import pending completion of registration formalities ? Hong Kong ?? Import pending completion of registration formalities ? Israel ?? Import pending completion of registration formalities ? Russia ?? Import pending completion of noti ?cation formalities ? Distribution Centers ?? IDC EDC and ADC cleared for exports ii Hitachi AMS Storage System Hardware Guide CTable of Contents Preface xiii Intended audience xiv Product version xiv Release notes and readme xiv Document revision level xiv Changes in this revision xv Document organization xv Document conventions xvi Convention for storage capacity values xvii Accessing product documentation xviii Getting help xxiii Comments xxiii Introduction - Array overview - Control unit con ?gurations - Power switch - AMS base unit - Expansion unit - High-density expansion unit - Features and bene ?ts - Supported host operating systems - High data availability - Connectivity - Fibre channel interface - iSCSI interface - Scalability - High capacity cache - Cache management - Cache speci ?cations - Performance reporting and monitoring - Reliability availability and serviceability - Table of Contents iii Hitachi AMS Storage System Hardware Guide CDynamic load balancing - High reliability - Spare disks - Replacing