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HP Surestore Disk Array FC60 HP SureStore E Disk Array 12H User's and Service - Page 256

One bank of LEDs not lit, One amber LED lit, out

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Appendix D. Back-to-Back Racking Problem Resolution One bank of LEDs not lit When one bank of LEDs is not lit (no green and no amber), power to one of the PDUs has failed. One or two of the cooling fans are not spinning. The remaining two PDUs are likely to be providing power to the arrays. This could be caused by tripped circuit breakers for the circuits delivering power to the rack, or unplugged power cables. If these are not the causes, problem diagnosis of the rack is as follows: 1. Is a PDU circuit breaker tripped? Check the PDU circuit breakers. The PDUs are located at the back of the rack. The circuit breakers are black buttons located at the bottom of each PDU. When the circuit breakers are tripped, the black buttons will be popped out. Locate and remove the cause of any overload. Reset the circuit breakers by pushing in on the black buttons. 2. Are both plugs of the exhaust fan assembly plugged in? Although unlikely, it is possible that one of the power cords for the exhaust fan assembly is not plugged in. If necessary, plug the exhaust fan assembly power cord into its receptacle. (Plug each of the fan assembly power cords into a different PDU.) When the power fail condition is corrected, the green LED on the rack front that was not lit should now light. One amber LED lit One or two of the three fans is not operating, probably due to a physical failure. A power failure is ruled out, as that would cause the complete bank of LEDs to not light. 1. Which fan is not spinning? The exhaust fan assembly is located at the back, top of the. Inspect the assembly visually to see which fan is not spinning. Replace the exhaust fan assembly. Two amber LEDs lit Two or three fans have failed. This condition is unlikely to occur. A power failure is ruled out, as that would cause both banks of LEDs to not light. 1. Have all fans failed? The exhaust fan assembly is located at the back of the rack, at the top. Inspect the assembly visually to confirm that no fans are spinning. Replace the exhaust fan assembly. CAUTION! This condition is critical, as the fans are not cooling the array enclosures in the rack, and disk drive reliability may be compromised. The exhaust fan assembly should be replaced within 48 hours. 256 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

Match case Limit results 1 per page

Appendix D. Back-to-Back Racking

Problem Resolution

256

Racking

One bank of LEDs not lit

When

one bank of LEDs is not lit (no green and no amber), power to one of the PDUs has failed. One or

two of the cooling fans are not spinning. The remaining two PDUs are likely to be providing power to the

arrays.

This could be caused by tripped circuit breakers for the circuits delivering power to the rack, or unplugged

power cables. If these are not the causes, problem diagnosis of the rack is as follows:

Is a PDU circuit breaker tripped?

Check the PDU circuit breakers. The PDUs are located at the

back of the rack. The circuit breakers are black buttons located at the bottom of each PDU.

When the circuit breakers are tripped, the black buttons will be popped out. Locate and remove the

cause of any overload. Reset the circuit breakers by pushing in on the black buttons.

Are both plugs of the exhaust fan assembly plugged in?

Although unlikely, it is possible that

one of the power cords for the exhaust fan assembly is not plugged in. If necessary, plug the

exhaust fan assembly power cord into its receptacle. (Plug each of the fan assembly power cords

into a different PDU.)

When the power fail condition is corrected, the green LED on the rack front that was not lit should now

light.

One amber LED lit

One or two of the three fans is not operating, probably due to a physical failure. A power failure is ruled

out, as that would cause the complete bank of LEDs to not light.

Which fan is not spinning?

The exhaust fan assembly is located at the back, top of the. Inspect

the assembly visually to see which fan is not spinning. Replace the exhaust fan assembly.

Two amber LEDs lit

Two or three fans have failed. This condition is unlikely to occur. A power failure is ruled out, as that

would cause both banks of LEDs to not light.

Have all fans failed?

The exhaust fan assembly is located at the back of the rack, at the top.

Inspect the assembly visually to confirm that no fans are spinning. Replace the exhaust fan

assembly.

CAUTION!

This condition is critical, as the fans are not cooling the array enclosures in

the rack, and disk drive reliability may be compromised. The exhaust fan assembly should

be replaced within 48 hours.