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Infortrend External RAID Controller & Subsystem Generic Operation Manual Revision 1.61 Firmware Version: 3.31 Asia Pacific Americas (International headquarter) Infortrend Technology, Inc. Infortrend Corporation 8F, No. 102 Chung-Shan Rd., Sec. 3 3150 Coronado Drive, Unit C Chung-Ho City, Taipei Hsien, Taiwan Santa Clara, CA 95054, USA Tel: (886)-2-2226-0126 Tel: (408) 988-5088 Fax: (886)-2-2226-0020 Fax: (408) 988-6288 [email protected] [email protected] [email protected] [email protected] www.infortrend.com.tw www.infortrend.com China Europe Infortrend Technology, Limited Infortrend Europe Limited Room 1236 Tower C Corporate Square Ground Floor, Chancery House No. 35 Financial Street Xicheng District St. Nicholas Way, Sutton, Beijing China 100032 Surrey, SM1 1JB, United Kingdom Tel: (86)-10-88091540 Tel:+44-(0)20 8770 1838 Fax: (86)-10-88092126 Fax:+44-(0)20 8770 7409 [email protected] [email protected] [email protected] [email protected] www.infortrend.com.cn www.infortrend-europe.com Copyright © 2003 This Edition First Published 2003 All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written consent of Infortrend Technology, Inc. Disclaimer Infortrend Technology makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Infortrend Technology reserves the right to revise this publication and to make changes from time to time in the content hereof without oblig- ation to notify any person of such revisions or changes. Product specifications are also subject to change without notice. Trademarks Infortrend and the Infortrend logo are registered trademarks and SentinelRAID, EonRAID, EonStor, RAIDWatch, and other names prefixed with “IFT” are trademarks of Infortrend Technology, Inc. PowerPC is a registered trademark of International Business Machines Corporation and Motorola Inc. ii DEC and Alpha are registered trademarks of Compaq Computer Corp. (formerly of Digital Equipment Corporation). Microsoft, Windows, Windows NT and MS-DOS are registered trademarks of Microsoft Corporation in the U.S. and other countries. Novell and NetWare are registered trademarks of Novell, Inc. in the U.S. and other countries. SCO, OpenServer, and UnixWare are trademarks or registered trademarks of The Santa Cruz Operation, Inc. in the U.S. and other countries. Solaris is a trademark of SUN Microsystems, Inc. UNIX is a registered trademark of The Open Group in the U.S. and other countries. All other names, brands, products or services are trademarks or registered trademarks of their respective companies. RMA Policy Please visit our websites (www.infortrend.com/www.infortrend.com.tw/ww.infortrend.com.cn/ www.infortrend-europe.com) where our RMA policy is given a detailed explanation. Supported Models This manual supports the following Infortrend controllers/subsystems: • SentinelRAID: SCSI-based external RAID controllers (including the 5.25” full-height and 1U canister configuration) • EonRAID: Fibre-based external RAID controllers (including the 5.25” full-height and 1U canister configuration) • EonStor: subsystems that come with SCSI or Fibre host channels. • IFT-6230 and 6330 series ATA RAID subsystems. Printed in Taiwan iii Table of Contents Chapter 1 RAID Functions: An Introduction 1.1 Logical Drive................................................................................................... 1 1.2 Logical Volume............................................................................................... 1 What is a logical volume?.................................................................................. 1 1.3 RAID Levels..................................................................................................... 2 What are the RAID levels? ................................................................................ 2 NRAID................................................................................................................ 3 JBOD ................................................................................................................. 3 RAID 0 ............................................................................................................... 4 RAID 1 ............................................................................................................... 4 RAID (0+1)......................................................................................................... 4 RAID 3 ............................................................................................................... 5 RAID 5 ............................................................................................................... 5 1.4 Spare Drives ................................................................................................... 6 Global and Local Spare Drives.......................................................................... 6 1.5 Identifying Drives ........................................................................................... 8 Flash Selected SCSI Drive ................................................................................ 8 Flash All SCSI Drives ........................................................................................ 8 Flash All but Selected Drives............................................................................. 8 1.6 Rebuild ............................................................................................................ 9 Automatic Rebuild and Manual Rebuild............................................................. 9 1. Automatic Rebuild ........................................................................................ 9 2. Manual Rebuild........................................................................................... 10 3. Concurrent Rebuild in RAID (0+1).............................................................. 11 1.7 Logical Volume (Multi-Level RAID)............................................................. 12 What is a logical volume?................................................................................ 12 Spare drives assigned to a logical volume? .................................................... 14 Limitations:....................................................................................................... 15 Partitioning - partitioning the logical drive or partitioning the logical volume? . 15 Different write policies within a logical volume?............................................... 16 RAID expansion with logical volume?.............................................................. 16 Different controller settings using logical volume? .......................................... 16 A logical volume with logical drives of different levels? ................................... 17 Multi-level RAID systems................................................................................. 17 Chapter 2 RAID Planning 2.1 Considerations ............................................................................................... 1 2.2 Configuring the Array: ................................................................................... 5 2.2.1 Starting a RAID System........................................................................... 5 2.3 Operation Theory ........................................................................................... 7 2.3.1 I/O Channel, SCSI ID, and LUN .............................................................. 7 2.3.2 Grouping Drives into an Array ................................................................. 7 2.3.3 Making Arrays Available to Hosts ............................................................ 9 2.4 Tunable Parameters ..................................................................................... 10 Chapter 3 Accessing the Array through Serial Port and Ethernet 3.1 RS-232C Serial Port....................................................................................... 1 iv 3.1.1 Configuring RS-232C Connection via Front Panel ..................................2 3.1.2 Starting RS-232C Terminal Emulation.....................................................3 3.2 Out-of-Band via Ethernet ..............................................................................4 What Is the “Disk Reserved Space?”.................................................................4 Other Concerns..................................................................................................5 Web-Based Management ..................................................................................5 Requirements.....................................................................................................5 3.2.1 Connecting Ethernet Port:........................................................................5 3.2.2 Configuring the Controller ........................................................................6 3.2.3 NPC Onboard ..........................................................................................9 The SNMP_TRAP section ...............................................................................10 The EMAIL section...........................................................................................10