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HP Surestore Disk Array FC60 HP SureStore E Disk Array 12H User's and Service - Page 252

Troubleshooting, LEDs on the front of the fan assembly. If a failure occurs

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Appendix D. Back-to-Back Racking Troubleshooting Troubleshooting A computer/instrument rack which has been field-upgraded for back-to-back racking has improved cooling and power features. In addition, the upgrade (the exhaust fan assembly) provides circuitry which can report fan failures and provide an indication of power failures. Fan and power failures are reported via indicator LEDs on the front of the fan assembly. If a failure occurs, the rack will continue to operate with its remaining non-failed components. To isolate a possible power or fan failure, use one of the following procedures, based on the status of the indicator LEDs. NOTE The two exhaust fan assembly power cables need to be connected into two separate PDUs, such as PDU #1 and PDU #2. The new PDUs installed from the power upgrade kit are not wired through the rack power switch. The rack power switch, at the top of the rack, is disconnected and no longer provides power switching. To disconnect power to the rack you must unplug each of the three PDUs. 252 Racking

Section	Page
Table of Contents	3
Product Description	9
Models and Configurations Available	9
Options	10
Available Accessories	13
Unpacking and Repackaging the Disk Array	14
Product Features	16
Connecting Power Cords	20
Installing Modules	20
Controller Module	22
SCSI Cabling Requirements	25
Connecting SCSI Cabling	25
Fibre Channel (FC) SCSI Multiplexer (MUX) Connection	32
Switching Power On	32
Switching Power Off	32
HP SureStore E Disk Array 12H Controller	33
About Battery Packs	33
Installing Controller Batteries	34
Replacing Controller Batteries	36
Downloading Array Controller Firmware	37
Firmware Download Procedure	39
Operating the Control Panel	69
Using the Control Panel	69
Control Panel Status Light Operation	70
Using the Control Panel Buttons	71
Using Control Panel Menus	75
Concepts and Management	83
Disk Arrays in Brief	83
Disk Array Features	84
Disk Array Hardware	93
Managing the Disk Array Capacity	100
Upgrading the Capacity of a Fully-Loaded Disk Array	104
Optimizing Performance	105
Troubleshooting	113
Module Slot Numbers	113
Module Status Lights	113
Replacing Modules	115
Troubleshooting Procedures	119
Power On Sequence Test	121
Control Panel Error Messages	123
FRU Codes	133
Event Code Descriptions	134
Preventive Maintenance	189
Tools Required	189
Required Preventive Maintenance	189
Removal and Replacement	191
Tools Required	191
Replacing a Failed Controller ModuleŒHP-qualified personnel only	191
Front Door AssemblyŒHP-qualified personnel only	192
Display ModuleŒHP-qualified personnel only	194
Backplane AssemblyŒHP-qualified personnel only	196
Power Button and Push RodŒHP-qualified personnel only	200
AC Power ReceptacleŒHP-qualified personnel only	201
Module Cam LeverŒHP-qualified personnel only	203
Replaceable Part Numbers	205
Appendix A. Product Specifications	211
Enclosure Physical Specifications	211
Operating Characteristics and Requirements	212
Environmental Requirements	213
Enclosure Features	215
Module Specifications	216
Appendix B. Regulatory/Safety Statements	217
FCC Statement (For U.S.A. Only)	217
Spécification ATI Classe A (France Seulement)	219
Product Noise Declaration (For Germany Only)	220
Geräuschemission (For Germany Only)	220
Electromagnetic Compatibility	221
Safety Specifications	221
Declaration of Conformity	222
Appendix C. Cabinet Configurations	223
Cabinet Configurations Available	223
Deskside Cabinet	223
Unpacking the Deskside Cabinet	224
Installing the Disk Array into the Deskside Cabinet	226
Deskside Cabinet Cabling	228
Rackmount Cabinets	229
Appendix D. Back-to-Back Racking	235
Product Description	235
Installation	239
Installation Procedure	242
Troubleshooting	252
Problem Resolution	255
Removal and Replacement	257
Specifications	258
Frequently-asked Questions	259

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Appendix D. Back-to-Back Racking

Troubleshooting

252

Racking

Troubleshooting

A computer/instrument rack which has been field-upgraded for back-to-back racking has improved cooling

and power features. In addition, the upgrade (the exhaust fan assembly) provides circuitry which can report

fan failures and provide an indication of power failures. Fan and power failures are reported via indicator

LEDs on the front of the fan assembly. If a failure occurs, the rack will continue to operate with its

remaining non-failed components. To isolate a possible power or fan failure, use one of the following

procedures, based on the status of the indicator LEDs.

NOTE

The two exhaust fan assembly power cables need to be connected into two separate

PDUs, such as PDU #1 and PDU #2.

The new PDUs installed from the power upgrade kit are not wired through the rack power switch.

The rack power switch, at the top of the rack, is disconnected and no longer provides power

switching.

To disconnect power to the rack you must unplug each of the three PDUs.