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Troubleshooting and Problem Solving

IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide

4.3.2

Ops Panel

The Ops Panel displays the aggregated status of all the modules. The Ops Panel LEDs are

shown in

Figure 4–1

and defined in

Table 4–2

. For details on how to remove and replace a

module see Section

4.9

Note

The Ops Panel is supplied as an integral part of the Enclosure core product
and is not user replaceable.

Table 4–1

PSU LEDs

AC PSU

LED

Status

• PSU Good

• AC input Fail

• Fan Fault

• DC Output

Fail

Green

Amber

Figure 4–1

Ops Panel

Содержание DCS9550 1S1

Страница 1: ...IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide SC30 9738 00 ...

Страница 2: ...s in certain transactions therefore this statement may not apply to you Order publications through your IBM representative or the IBM branch office serving your locality No part of this document covered by copyright may be reproduced in any form or by any means graphic electronic or mechanical including photocopying recording taping or storage in an electronic retrieval system without prior writte...

Страница 3: ...t you This section contains information about where to go for additional information about IBM and IBM products what to do if you experience a problem with your IBM System Storage DCS9550 product and whom to call for service if it is necessary Support information For online support information for your IBM System Storage DCS9550 product visit the following Web site www ibm com support For telephon...

Страница 4: ...forming a task and of measures to minimize the risks to that person or other persons User Operator Any person authorized to handle operate the product other than a Service Person Safe Handling Do not try to lift the enclosure by yourself An enclosure can weigh from 9kg 19 8 lb to 37kg 77 6lb Before removing an enclosure from a rack cabinet always first remove all modules and drives from the enclos...

Страница 5: ...must be only operated from a power supply input voltage range of 100 V AC to 240 V AC When a redundant power input module is fitted it must be operated from a reduced input voltage range of 200 V AC to 240 V AC The plug on the power supply cord is used as the main disconnect device Ensure that the socket outlets are located near the product and are easily accessible The product is intended to oper...

Страница 6: ...er to the product prior to removal of the power supply cooling module from the product chassis Provide a safe electrical earth ground connection for the power cord Provide a suitable power source with electrical overload protection to meet the requirements detailed in the product s technical specifications To ensure your system has warning of a power failure disconnect the power from the PSU by ei...

Страница 7: ...azardous Voltage Figure P 7 I O Module Caution Label Do not operate with modules missing Figure P 8 Drive Carrier Module Caution Label Drive Spin down time 30 seconds Operation of the product with ANY modules MISSING in the product s chassis will disrupt airflow and the drives will not receive sufficient cooling It is ESSENTIAL that all bays in a product chassis are filled before operating the pro...

Страница 8: ...mplies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this product must not cause harmful interference and 2 this product must accept any interference received including interference that may cause undesired operation European Union EU Electromagnetic Compatibility Directive This product conforms with the protection requirements of EU Council Directive 89 336 ...

Страница 9: ...w der EMC EG Richtlinie 89 336 Dieses Gerät ist berechtigt in Übereinstimmung mit dem Deutschen EMVG das EG Konformitätszeichen CE zu führen Verantwortlich für die Konformitätserklärung nach Paragraph 5 des EMVG ist die IBM Deutschland Informationssysteme GmbH 70548 Stuttgart Informationen in Hinsicht EMVG Paragraph 4 Abs 1 4 Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Kla...

Страница 10: ...our host computer and all attached peripheral devices Disk drives are fragile Handle them with care and keep them away from strong magnetic fields All the supplied plug in modules and blanking plates must be in place for the air to flow correctly around the enclosure and to complete the internal circuitry If the subsystem is used with modules or blanking plates missing for more than a few minutes ...

Страница 11: ...gh quality information If you have comments or suggestions for improving this publication you can send us comments electronically by using the following address Internet starpubs us ibm com You can also mail your comments by using the Readers Comments Form in the back of this manual or direct your mail to International Business Machines Corporation Information Development Dept GZW 9000 South Rita ...

Страница 12: ...x IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide P r e f a c e ...

Страница 13: ...xi IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide P r e f a c e ...

Страница 14: ...2 1 1 Enclosure Bay Numbering Convention 16 2 2 1 Pre Requisites 17 2 2 2 Rack Mounting Rail Kit 17 2 2 3 Chassis Installation 17 2 3 1 Parts Check List 18 2 3 2 Power Supply Cooling Module Procedure 18 2 4 1 Internal Loop Structures 20 2 7 1 Procedure 23 2 9 1 Planning and Configuring Your Installation 26 2 10 1 Parts Check List 27 2 10 2 Procedure 27 2 10 3 Dummy Carrier Modules 29 2 10 4 Engagi...

Страница 15: ...M I O Module LEDs 41 4 4 1 Audible Alarm Mute 41 4 5 1 System Faults 42 4 5 2 Power Supply Cooling Faults 42 4 5 3 Thermal Control 43 4 5 4 Thermal Alarm 44 4 5 5 Thermal Shutdown 44 4 6 1 Dummy Carrier Modules 45 4 9 1 Power Supply Cooling Modules 46 4 9 2 Ops Panel 48 4 9 3 SCM I O Module 48 4 9 4 Drive Carrier Module 50 ...

Страница 16: ... Expansion Unit design concept is based on a subsystem together with a set of plug in modules The DCS9550 1S1 Storage Expansion Unit subsystem as supplied comprises Chassis and Backplane with integral Operators Panel See Figure 1 8 Up to 16 Serial ATA SATA Drive Carrier modules See Figure 1 9 Serial ATA SATA drives with appropriate switching card Figure 1 1 The DCS9550 SATA Disk Chassis Model 1S1 ...

Страница 17: ...ns 16 drive bays at the front each of which accommodates a plug in drive carrier module The 16 drive bays are arranged in 4 rows of 4 drives At the rear the chassis assembly contains the integral ops panel and four module bays to house two Power Supply Cooling modules one SCM I O module and one blank SCM module filler The Backplane PCB provides logic level signal and low voltage power distribution...

Страница 18: ...ly 115V or 230V AC selected automatically Four LEDs mounted on the front panel of the Power Supply Cooling module see Figure 2 1 indicate the status of the PSU and the fans 1 2 1 1 Multiple Power Supply Cooling Modules The DCS9550 1S1 Storage Expansion Unit must always be operated with two Power Supply Cooling modules fitted The two Power Supply Cooling modules operate together so that if one fail...

Страница 19: ... Indicators and Switches The Ops Panel includes Light Emitting Diodes LEDs which show the status for all modules an Audible Alarm which indicates when a fault state is present a push button Alarm Mute Switch and a thumb wheel Enclosure ID Switch The Ops Panel switch functions are shown in Table 1 1 Figure 1 5 Ops Panel Table 1 1 Ops Panel Switch Functions Default settings for DCS9550 1S1 Storage E...

Страница 20: ... incorporates the following LED indicators Host Important If only one SCM module is fitted the SCM module must be installed in Rear Bay 4 location see Figure 1 3 Enclosure Chassis Rear on page 2 and a Blank I O module fitted in the unused bay 7 8 Drive Loop Speed Select Sw 7 Sw 8 DCS9550 Controller Settings Off Off Force 1Gb s DCS9550 Controller Settings On Off Force 2Gb s recommended 9 10 Drive A...

Страница 21: ...is GOOD No connection or incorrect connection Invalid SFP connection Green On Off Flashing Router Status Storage Router Device Ready Storage Router Device not ready or defective Green On Off ESI SCM Module Fault Fault present also On when booting Successful controller initialization Amber Off On Figure 1 6 SCM I O Module Table 1 2 SCM I O Module LEDs ...

Страница 22: ...tem Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide 7 Figure 1 7 SCM Front Panel as viewed from rear of Enclosure Figure 1 8 DCS9550 1S1 Storage Expansion Unit with SCM I O Modules Installed ...

Страница 23: ...ions Camming of carrier into and out of drive bays Positive spring loading of the drive backplane connector An anti tamper lock operated by a torx socket type key 1 2 4 1 SATA Dual Path Transition Card For SATA drives a SATA dual path transition card is used in place of a SATA PATA transition card This is attached to the rear of each drive to provide a SCA 2 interface to the drive carrier using th...

Страница 24: ...nt SCM bay slot 3 at the rear of the enclosure Figure 1 3 on page 2 refers to maintain airflow and ensure correct operation ATTENTION Operation of the Enclosure with ANY modules missing will disrupt the airflow and the drives will not receive sufficient cooling It is ESSENTIAL that all apertures are filled before operating the unit Dummy Carriers and or Blank modules are available for this purpose...

Страница 25: ...e inches millimeters Height 5 12 130 Width across mounting flange 19 0 482 Depth 19 7 500 Fully loaded with 16 drives 37kg 77 6 lb Empty Enclosure 9kg 19 8lb Voltage Range 100 120 200 240 VAC Rated Voltage Range Selection Automatic Frequency 50 60 Hz Inrush Current 50A 260VAC Power Factor 0 98 Harmonics Meets EN61000 3 2 Safety Compliance UL 60950 IEC 60950 EN 60950 EMC Compliance CFR47 Part 15B C...

Страница 26: ...on Back pressure created by rack doors and obstacles not to exceed 5 pascals 0 5mm Water gauge Altitude Operational 0 to 2133 m 0 to 7 000ft 10 000ft at maximum ambient of 35 C Altitude Non Operational 305 to 12 192m 1000 to 40 000ft Shock Operational Vertical axis 5g peak 1 2 sine 10ms Shock Non Operational 30g 10ms 1 2 sine Vibration Operational 0 21grms 5 500 Hz Random Vibration Non Operational...

Страница 27: ...with two SFP connections Mounting Rear single bays 3 and or 4 see Figure 1 3 Connectors 2 x Expansion Ports SFP connector 2 x Host Ports SFP connector 2 per port LED Functions FC Host Port 0 Signal Good Green On Incoming FC signal is GOOD Off no connection or incorrect connection Flashing Invalid SFP connection FC Host Port 1 Signal Good Green On Incoming FC signal is GOOD Off no connection or inc...

Страница 28: ...vice and User Guide 13 1 4 10 Software Enclosure Services SES Support The enclosure has a sophisticated self monitoring and reporting function which conforms to ANSI SES specifications This reports on such topics as Enclosure temperature Fan speed Drive condition Operator panel status ...

Страница 29: ...Introduction 14 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide This page is intentionally blank ...

Страница 30: ...rrect positions of each of the optional plug in modules are shown in Table 2 1 Please refer to sections 2 4 2 7 for details of SCM I O module configurations and installation Table 2 1 DCS9550 1S1 Storage Expansion Unit Configuration Module Location Drive Bays ALL drive bays must be fitted with either a drive carrier module or a dummy carrier no bays should be left completely empty Drive carrier mo...

Страница 31: ...e the space of 1 drive width by 4 drive bays high in the rack mount configuration The DCS9550 1S1 Storage Expansion Unit is housed in a 4 x 4 enclosure that is 4 bays wide by 4 bays high The front bays are numbered 1 to 4 from left to right as viewed from the front Bays are numbered from 1 top row to 4 bottom row Drive Carrier Module locations are identified from a matrix of the top and side numbe...

Страница 32: ...nce between the rack cover and front of drawer and 50mm 2 inches rear clearance between rear of drawer and rear of rack is recommended in order to maintain the correct air flow around the enclosure Maximum back pressure The rack should present a maximum back pressure of 5 pascals 0 5mm water gauge 2 2 2 Rack Mounting Rail Kit A set of mounting rails is available for use in 19 inch rack cabinets Th...

Страница 33: ...ement of the chassis in the rack 2 3 Power Supply Cooling Module Installation Two power supply cooling modules to be installed in the rear of the enclosure in positions 1 and 5 2 3 1 Parts Check List 2 x AC 450W Power Supply Cooling Modules 2 3 2 Power Supply Cooling Module Procedure Important PSU1 RH rear bay must be fitted upside down Figure 2 1 If necessary reorient the power cord clip so that ...

Страница 34: ...down orientation If necessary reorient the power cord clip so that the power cord can be properly retained 3 Cam the module home by manually closing the PSU handle Figure 2 4 You should hear a click as the handle latches engage 4 Connect the power supply cord to the power source and switch the power supply ON Figure 2 2 AC Power Supply Cooling Module Handle in Open Position Figure 2 3 Installing a...

Страница 35: ...n external FC AL interface via SFP connection The SCM module facilitates the emulation of fibre channel drives by ATA SATA drives by converting FC protocols to ATA SATA protocols This is done through protocol conversion on the SCM module which directly connects to each drive using the serial ATA protocol and then presents to the host via one FC loop hubbed to two or four SFP connections depending ...

Страница 36: ...ge DCS9550 1S1 Storage Expansion Unit The following figures illustrates how to cable the DCS9550 1S1 Storage Expansion Unit to the couplets Unit 1 and Unit 2 and the couplets to each other Figure 2 5 DCS9550 1S1 Storage Expansion Unit Unit 1 Cabling Unit 1 A Unit 1 B Unit 1 C Unit 1 E Unit 1 F Unit 1 G Unit 1 H Unit 1 P Unit 1 S Unit 1 D ...

Страница 37: ...Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide Figure 2 6 DCS9550 1S1 Storage Expansion Unit Unit 2 Cabling Unit 2 A Unit 2 B Unit 2 D Unit 2 E Unit 2 C Unit 2 F Unit 2 G Unit 2 H Unit 2 P Unit 2 S ...

Страница 38: ...or damage especially to the interface connector Do not install if any pins are bent 1 Install the module in rear Bay 3 of the enclosure Figure 2 1 2 With the latch in the open position see Figure 2 8 slide the SCM module into the enclosure until the latch engages automatically 3 Cam the module home by manually closing the latches see Figure 2 9 You should hear a click as the latch engages Figure 2...

Страница 39: ...osure ID switch on the Ops Panel shown in Figure 1 2 on page 2 at the rear of the enclosure The switch settings are shown in Table 2 2 Figure 2 9 Installing an SCM I O Module in Bay 4 Table 2 2 Ops Panel Switch Functions Default settings for DCS9550 1S1 Storage Expansion Unit SCM usage at 1Gb s Switch Number Function Recommended Setting Definition 1 thru 6 Not Used Off 7 8 Drive Loop Speed Select ...

Страница 40: ...ted 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 4 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 5 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 6 80 81 82 83 84 85 65 87 88 89 90 91 92 93 94 95 7 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 8 96 97 98 99 100 101 102 103 104 105 106 10...

Страница 41: ...must be a drive present in Bay 1 1 drive 0 or 4 4 drive 15 to enable SES Communications to operate Installing drives in both of these bays provides redundant SES communication paths When planning your system configuration please remember that All DCS9550 1S1 Storage Expansion Unit drive bays must be filled with either a drive carrier or front dummy fascia No bays should be left completely empty 2 ...

Страница 42: ...osure Figure 2 10 Important For a Rack Mounted System Ensure that the carrier is oriented so that the drive is uppermost and the handle opens from the left Slide the carrier gently all the way into the enclosure until it is stopped by the camming lever on the right of the carrier Figure 2 11 4 Cam the carrier home the camming foot on the base of the carrier engages into a slot in the enclosure Con...

Страница 43: ...llation 28 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide Figure 2 10 Installing a SATA Drive Carrier Module 1 Figure 2 11 Installing a SATA Drive Carrier Module 2 ...

Страница 44: ...nti tamper Locks The anti tamper locks are fitted in the drive carrier handles and are accessed through the small cutout in the latch section of the handle Drives are supplied with the locks set in the locked position 2 10 4 1 Activating the Locks 1 Carefully insert the lock key provided into the cutout in the handle 2 Locate the key into its socket 3 Rotate the key in a clockwise direction until ...

Страница 45: ...s activated outside the enclosure 2 11 Power Cord Connection 2 11 1 Parts Check List Power cord to requisite local standards 2 11 2 Procedure 1 Attach the power cord to the Power Supply Cooling Modules 2 Attach the power cord to the in line IEC connector in this cord 3 Switch on each Power Supply Cooling Module The PSU Good and AC Fail LEDs on the PSU indicate whether AC mains power is present Cau...

Страница 46: ...ety electrical earth connection Warning If more than one product is fitted in a rack the earth connection to the rack is even more important because the rack will then have a high EARTH LEAKAGE CURRENT TOUCH CURRENT The earth connection to the rack must be checked before switching on by an electrical engineer who is qualified to the appropriate local and national standards to perform the check ...

Страница 47: ...Installation 32 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide This page is intentionally blank ...

Страница 48: ...ding for details of the Ops Panel LEDs and related fault conditions Follow the procedure below to Power On the enclosure 1 Apply AC Mains power to the enclosure Turn the Power Supply modules to ON 2 On the Ops Panel the Audible Alarm beeps once all LEDs flash for 7 seconds then the Alarm double beeps 3 All LEDs on the Ops Panel should be lit Green when the enclosure power is activated and the disk...

Страница 49: ...ower Supply Cooling module incorporates 4 LEDs located below the On Off switch and shown in tablecap Under Normal conditions the LEDs should all be illuminated constant GREEN If a problem is detected the color of the relevant LED will change to AMBER Table 3 1 PSU LEDs AC PSU PSU Good Green AC input Fail Amber Fan Fault Amber DC Output Fail Amber ...

Страница 50: ...em Solving for details of any fault indication Figure 3 1 Ops Panel LEDs and Switches Table 3 2 Ops Panel LED States LED Definition Color Normal Status Fault Status Invalid Address Indicates that an invalid Enclosure ID has been selected or that the selection has changed after Power On Amber Off Flashing Power On Enclosure Powered On Green On Off System Fault System SCM Fault Amber Off On PSU Cool...

Страница 51: ...ent the drive motors will spin up in a delayed sequence 3 3 1 Disk Drives LEDs Each drive carrier incorporates two indicators an upper GREEN and lower AMBER In normal operation the Green LED will be ON and will flicker as the drive operates The amber indicator is OFF during normal operation and ON if there is a drive fault present 3 4 Power Down To power the Enclosure down either Switch off the Po...

Страница 52: ...al FC AL device certain data such as emulated WWN is not available on Power On so the emulated devices will not present on the FC loop and participate in FC loop initialization until the drive has spun up Please note that your RAID Head Host system needs to be aware of this extra spin up time during Power On situations whether they be planned ON or NOT ON e g as the result of an unexpected power i...

Страница 53: ...ill not be lit during drive spinup 4 Check that all drive carrier modules have been correctly installed 5 Check that there is a valid FC_AL signal present at the I O connector see section 2 4 1 If there is no signal present check that the cable has not been reversed during installation 6 Check the SCM I O module setup as follows Check that the SCM I O module has been correctly installed and all ex...

Страница 54: ...of all the modules The Ops Panel LEDs are shown in Figure 4 1 and defined in Table 4 2 For details on how to remove and replace a module see Section 4 9 Note The Ops Panel is supplied as an integral part of the Enclosure core product and is not user replaceable Table 4 1 PSU LEDs AC PSU LED Status PSU Good AC input Fail Fan Fault DC Output Fail Green Amber Amber Amber Figure 4 1 Ops Panel ...

Страница 55: ...ault Status Invalid Address Indicates that an invalid Enclosure ID has been selected or that the selection has changed after Power On Amber Off Flashing Power On Enclosure Powered On Green On Off System Fault System SCM Fault Amber Off On PSU Cooling Fault PSU Cooling fault or enclosure over temperature Amber Off On 2Gb Link Speed Indicates link speed Green Off On Hub Mode Not Used Green Off Off ...

Страница 56: ...m is muted it will continue to sound with short intermittent bleeps to indicate that a problem still exists It will be silenced when all problems are cleared See also Thermal Shutdown states Section 4 5 5 LED Test Mode The Alarm Mute push button can also be used to test the LEDs on the Ops Panel When the Mute push button is held all LEDs will be illuminated if there are no faults present Table 4 3...

Страница 57: ...Supply Cooling module Remove and then re fit the module if the problem persists then change the module 2 Check for other AMBER LED indications on the drive carriers If none are evident then there may either be an ESI processor problem or a Backplane problem 3 Ops Panel module faulty Please contact your supplier Symptom Cause Action 1 Ops Panel FAULT LED AMBER 2 An AMBER LED on one or more Power Su...

Страница 58: ... a fault condition The first stage in the thermal control process is for the fans to automatically increase in speed when a thermal threshold is reached This may be caused by higher ambient temperatures in the local environment and may be perfectly normal Note This threshold changes according to the number of drives and power supplies fitted 1 Check the installation for any airflow restrictions at...

Страница 59: ...e Power Supply Cooling Modules 3 Audible Alarm Sounding 4 Air temperature exiting PSU above 55 C If the internal temperature measured in the airflow through the enclosure exceeds a pre set threshold a thermal alarm will sound 1 Check local ambient environment temperature is below the upper 40 C specification 2 Check the installation for any airflow restrictions at either the front or rear of the e...

Страница 60: ...my carrier module in order to maintain a balanced air flow All the supplied plug in power supply units electronics modules and blank modules must be in place for the air to flow correctly around the cabinet 4 8 Continuous Operation During Replacement Depending on how the subsystem is set up if a disk unit fails it can normally be replaced without interrupting the use of the system In addition each...

Страница 61: ... power supply cord 3 Squeeze the two latches on the PSU handle together Figure 4 2 and open the handle to cam the PSU out of the enclosure Figure 4 3 4 Grip the handle and withdraw the PSU Figure 4 4 4 9 1 2 Inserting the Module 1 Check for damage especially to the rear connector on the PSU ATTENTION Handle the module carefully and avoid damaging the connector pins Do not install the module if any...

Страница 62: ...olving IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide 47 Figure 4 2 Removing Inserting an AC Power Supply Cooling Module 1 Figure 4 3 Removing Inserting an AC Power Supply Cooling Module 2 ...

Страница 63: ...9 3 1 Removing the Module ATTENTION Do not remove this module unless a replacement can be immediately added The system must not be run without all units in place Electrically this unit can be hot plugged but the FC connection will be disconnected 1 Using two hands grasp each latch between the thumb and forefinger of each hand Squeeze thumb and forefinger together to release the latch Pull the latc...

Страница 64: ...ubleshooting and Problem Solving IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide 49 Figure 4 5 Removing an SCM I O Module 1 Figure 4 6 Removing an SCM I O Module 2 ...

Страница 65: ...installation of the plug in modules in the DCS9550 1S1 Storage Expansion Unit Caution Observe all conventional ESD precautions when handling the DCS9550 1S1 Storage Expansion Unit modules and components Avoid contact with backplane components and module connectors etc 4 9 4 1 Removal and Replacement ATTENTION Drive spin down Damage can occur to a drive if it is removed while still spinning If poss...

Страница 66: ...able parts are available for the DCS9550 1S1 Storage Expansion Unit IBM MTM 1269 1S1 SATA Disk Chassis FRUs IBM Part Number Description 95P5297 1269 1S1 SATA disk chassis assembly FRU without drives 95P5313 power supply fan FRU 95P5315 SCM I O Module FRU 95P5316 Op panel FRU 95P5317 drive module key 95P5318 power cord FRU 95P5319 cable RS232 config FRU 95P5320 rail kit FRU 95P5326 250GB SATA HDD F...

Страница 67: ...Troubleshooting and Problem Solving 52 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide This page is intentionally blank ...

Страница 68: ...omputer In user documentation the term usually refers to 8 bit units or characters 1 kilobyte K is equal to 1 024 bytes or characters 64K indicates 65 536 bytes or characters Cable Throughout this DCS9550 1S1 Storage Expansion Unit user guide this term is used in accordance with the preferred US context of an insulated flexible electric wire used for the transmission of data signals between comput...

Страница 69: ...d two SCM I O modules Operating system The software running the host computer For example on PCs it is often Windows 95 98 Windows NT or OS 2 and on Hewlett Packard machines it could be HP UX Parallel Transmission The transfer of data characters using parallel electrical paths for each bit of the character for example 8 paths for 8 bit characters Data is stored in computers in parallel form but ma...

Страница 70: ...Processor 37 Enclosure System Interface Operators Panel 4 ESD 17 45 ESD precautions 50 ESI processor 42 f fan failure 42 FC_AL signal 38 l LED 3 4 9 38 41 42 44 LED indicators 5 o Operators Panel 1 4 Ops Panel 4 9 16 17 33 39 41 42 48 Ops Panel LEDs 35 39 Ops Panel Switch Functions 4 24 p PATA disk drive 5 PATA SATA disk drive 37 plug in module 1 2 15 Power Down 36 Power On 33 power supply cord 19...

Страница 71: ...age DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide 56 Serial ATA Control SCM Input Output module 2 serial ATA protocol 20 SES 26 starting drives 36 SYSTEM LED 42 v Visible and Audible Alarms 9 ...

Страница 72: ...LICATION AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF NON INFRINGEMENT MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Some states do not allow disclaimer of express or implied warranties in certain transactions therefore this statement may not apply to you This information could include technical inaccuracies or typographi...

Страница 73: ...oduct or service names may be trademarks or service marks of others Product recycling and disposal This unit must be recycled or discarded according to applicable local and national regulations IBM encourages owners of information technology IT equipment to responsibly recycle their equipment when it is no longer needed IBM offers a variety of product return programs and services in several countr...

Страница 74: ...WEEE Directive as shown above must not dispose of end of life EEE as unsorted municipal waste but use the collection framework available to customers for the return recycling and recovery of WEEE Customer participation is important to minimize any potential effects of EEE on the environment and human health due to the potential presence of hazardous substances in EEE For proper collection and trea...

Страница 75: ...60 IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation Service and User Guide ...

Страница 76: ...and prices please contact your IBM branch office your IBM business partner or your authorized remarketer When you send comments to IBM you grant IBM a nonexclusive right to use or distribute your comments in any way it believes appropriate without incurring any obligation to you IBM or any other organizations will only use the personal information that you supply to contact you about the issues th...

Страница 77: ... Development Dept GZW 9000 South Rita Road Tuscon AZ U S A 85744 0001 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ...

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