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1、MK-97DF8073EN-003276555-A/3276556-AControl Unit Replacement GuideFASTFIND LINKSHitachi AMS 2100/2300 Storage SystemControl Unit Replacement Guide iiHitachi AMS 2100/2300 Storage System Control Unit Replacement Guide 2008 Hitachi Data Systems Corporation,ALL RIGHTS RESERVEDNotice:No part of this publ
2、ication 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 Data Systems Corporation(hereinafter referred to as“Hitachi
3、 Data Systems”).Hitachi Data Systems reserves the right to make changes to this document at any time without notice and assumes no responsibility for its use.Hitachi Data Systems products and services can only be ordered under the terms and conditions of Hitachi Data Systems applicable agreements.Al
4、l 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 office for information on feature and product availability.This document contains the most current information available at the t
5、ime of publication.When new and/or revised information becomes available,this entire document is updated and distributed to all registered users.Hitachi,the Hitachi logo,and Hitachi Data Systems are registered trademarks and service marks of Hitachi,Ltd.The Hitachi Data Systems logo is a trademark o
6、f Hitachi,Ltd.Other company and product names mentioned herein are trademarks of their respective companies.Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a recommendation.Hitachi Data Systems assumes no responsibility with regard to the
7、 performance or use of these products.1Hitachi AMS 2100/2300 Storage System Control Unit Replacement Guide Hitachi AMS 2100/2300Storage SystemControl Unit Replacement GuideThe Hitachi AMS 2100/2300 Storage Systems hot-swappable feature enables you to replace a control unit without turning off the ar
8、ray.This replacement procedure includes instructions to physically remove and replace a control unit installed in a base unit.See the Hitachi AMS 2100/2300 Storage System Service Guide for troubleshooting information to determine whether acon trol unit has failed and how to order a new one.This guid
9、e contains the following key topics.?Tool Needed?Before You Begin?Unpacking a Control Unit?Verifying a Control Unit Failure?Replacing a Control Unit?Removing a Control Unit?Installing a Control Unit?Installing a Control Unit 2Hitachi AMS 2100/2300 Storage System Control Unit Replacement Guide Replac
10、ement ProcedureThis procedure describes how to replace a control unit under the following conditions:When the Alarm LED on the control unit is ON.Tool NeededElectrostatic discharge wrist strap.Before You BeginBefore replacing a control unit,read the following information.Unpacking a Control Unit1.Re
11、move the control unit from its static-protective container.2.Verify that you have the correct model number.See Chapter 3,Replaceable Parts in the Hitachi AMS 2100/2300 Storage System Service Guide.3.Return the control unit to the container until you are ready to install it.Verifying a Control Unit F
12、ailureVerify that the control unit has failed.See Chapter 2,Identifying Failed Parts,in the Hitachi AMS 2100/2300 Service Guide.Static-sensitive.Ground yourself before touching.CAUTION!When hot-swapping a part,do not leave any slot in the array open for more than ten minutes.Otherwise,the loss of co
13、oling air could cause the unit to overheat and shut down.Do not replace any parts while the green Ready LED on the front of the base unit is blinking at high speed because the firmware is being installed during that time.Wait unitl the Ready LED is ON before replacing any parts.When replacing both c
14、ontrol units turn off the array before replacing the control units.Keep the new control unit in the packing box until you are ready to install it.There may be an error report in the host computer depending on the operating conditions of the host computer.3Hitachi AMS 2100/2300 Storage System Control
15、 Unit Replacement Guide Replacing a Control UnitComplete the following steps to replace a control unit:1.Follow the troubleshooting and failure identification procedures described in Chapter 2,Identifying Failed Parts and Chapter 6,Troubleshooting in the Hitachi AMS 2100/2300 Storage System Service
16、Guide.2.Verify that the red Alarm LED or orange Reset LED on the control unit you are replacing is ON.3.Follow the procedure below and then the procedure titled Installing a Control Unit on page 5.Removing a Control UnitComplete the folling steps to remove a control unit from a base unit.1.Label all
17、 cables that are connected to the control unit so that they are easy to replace after the new control unit is installed.2.If you have not already done so,put on an electrostatic discharge wrist strap.3.Disconnect all cables except the ENC cables from the control unit.4.Push the blue buttons on the l
18、ock levers to unlock them.5.Pull outwaward on both lock levers to disengage the connetors in the unit.See the following illustration.NOTE:If the array power is on and both control units in a base unit fail at the same time(very unlikely)replace them one at a time.The system parameters are stored on
19、an internal disk drive(one that is not used for user data storage)and when you install a new controller,the system parameters are automatically installed on it.If you replace a control unit while a logical unit in the array is being formatted,the restoration of the controller will be delayed until t
20、he LUN formatting is complete.CAUTION!Do not disconnect the ENC cables from the controller until after the controller has been disconnected from the base unit.All other cables may be disconnected first.CAUTION!Do not disconnect the ENC cables until the control unit has been disconnected from the bas
21、e unit.4Hitachi AMS 2100/2300 Storage System Control Unit Replacement Guide Figure 1-1:Unlocking a Control Unit6.Slide the control unit part way out of the base unit.7.Disconnect the ENC cables from the control unit.8.Grasp the control unit with both hands and slide it out of the base unit.Figure 1-
22、2:Removing a Control UnitTable 1-1:Unlocking a Control UnitItemDescriptionItemDescription11Lock Lever22Lock ButtonTable 1-2:Removing a Control UnitItem.DescriptionItem.Description11Control Unit33Wrist strap 22Support the control unit with both hands44wrist strap Clip 5Hitachi AMS 2100/2300 Storage S
23、ystem Control Unit Replacement Guide Installing a Control UnitComplete the following steps to install a control unit:1.Ensure that you wait 20 seconds or longer after removing the control unit.2.When the expansion unit is connected,connect the ENC cable.When the expansion unit is not connected,go to
24、 step 3.3.Insert the control unit with the right and left levers open and then close the levers completely until you hear the lock buttons on the levers click.After you install the new control unit,the Alarm LED on the control unit will stay on for a few minutes until the failure has recovered.If th
25、e control unit is inserted without waiting for 20 seconds,it is possible that the control unit may not recover normally from a failure.If a control unit does not recover from a failure after 10 minutes or more has elapsed,perform the dummy replacement(see Note)of the control unit which was inserted.
26、If a control unit has not recovered after another 10 minutes,call Hitachi Data Systems technical support.See the Getting Help section in the Preface of this manual.4.Make sure that the orange Warning LED on the front of the base unit goes out(see Note).The control unit usually recovers in about thre
27、e minutes,but if the I/O load from the host computer is high,it may take three minutes or more to recover.)5.Connect all of the cables to the control unit.When connecting the Fibre Channel interface cables,insert the Fibre Channel interface cables until they are completely seated in the host connect
28、ors.If the fibre channel Interface cables are partially inserted into the host connectors,the control unit continues to detect the fibre channel failures,and the I/O processing of the control unit may be deteriorated.Control unit#0 is installed upside down and therfore all of the connectors in it ar
29、e also upside down.Verify the orientation of the cable connectors when you install them.6.Check that the green READY LED on the front of the base unit illuminates.The green READY LED on the front of the base unit may blink rapidly for a maximum of 30 to 50 minutes before it illuminates.7.Check that
30、the LED of the remote adaptor connected to the control unit illuminates when the remote adaptor is connected.NOTE:When an expansion unit is connected to a contol unit via ENC cables,always leave the ENC cables connected to the control unit while removing or installing the control unit.Otherwise,the
31、loop will not recover from the failure and neither will the control unit.The upper control unit is upside down.Be careful of the connecting position of the cables.6Hitachi AMS 2100/2300 Storage System Control Unit Replacement Guide Hitachi AMS 2100/2300 Storage System Control Unit Replacement GuideM
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