IBM Power775 Manual

Power775 Disk Enclosure Chassis Service Procedure
Page 1 of 171
Power775 Disk Enclosure Chassis Service
Procedure
Last Modified 3/6/2 12

Power775 Disk Enclosure Chassis Service Procedure
Page 2 of 171
CONTENTS
1GENERAL ......................................................................................................................................6
1.1 RELEASE /REVISION HISTORY ....................................................................................................6
1.2 WHERE TO FIND THIS DOCUMENT ................................................................................................6
1.3 REQUIRED DOCUMENTS ..............................................................................................................6
1.4 RELATED DOCUMENTS................................................................................................................ 6
1.5 ABBREVIATIONS .........................................................................................................................7
2OVERVIEW....................................................................................................................................8
2.1 SAFETY NOTICES ........................................................................................................................ 8
2.2 ATTENTION: FILE SYSTEM RISK STATEMENT ......................................................................... 11
2.3 CONFIRM HOW YOU GOT TO THIS POWER 775 DE CHASSIS REPLACE SERVICE PROCEDURE ....... 11
2.4 DISK ENCLOSURE CHASSIS DESCRIPTION .................................................................................. 11
2.4.1 Enclosure VPD label and Location Code............................................................................. 13
2.5 CONCURRENCY ......................................................................................................................... 13
2.6 DE CHASSIS WEIGHT ................................................................................................................ 13
2.7 REQUIRED SSRS AND ROLES..................................................................................................... 14
2.8 ESTIMATED SERVICE TIME........................................................................................................ 14
2.9 REQUIRED TOOLS...................................................................................................................... 14
2.10 PREREQUISITES FOR THIS PROCEDURE....................................................................................... 14
2.11 OVERVIEW OF PROCEDURE ....................................................................................................... 15
3SERVICE PROCEDURE ............................................................................................................. 17
3.1 UNPACK AND PRESSURE TEST THE NEW DE CHASSIS <= SSR TASK.......................................... 17
3.2 ASSESS SHUTDOWN OF FILE SYSTEM <= CUSTOMER TASK .................................................... 17
3.3 SHUTDOWN THE FILE SYSTEM <= CUSTOMER TASK.............................................................. 17
3.4 IDENTIFY THE FRAME <= SSR TASK......................................................................................... 18
3.5 POWER OFF THE DISK ENCLOSURE <= CUSTOMER TASK....................................................... 26
3.6 CONFIRM THAT 350V IS OFF TO THE DISK ENCLOSURE <= SSR TASK ...................................... 27
3.7 REMOVE FRONT DOOR AND LATCH PLATE,MOVE UEPO PANEL <= SSR TASK...................... 28
3.8 DISCONNECT CABLES,HOSES,AND RETENTION SCREWS <= SSR TASK ................................... 34
3.9 ATTACH THE LIFT TOOL TO THE FRAME <= SSR TASK............................................................. 43
3.10 MOVE THE DISK ENCLOSURE ONTO THE LIFT TOOL <= SSR TASK ........................................... 49
3.11 REMOVE FANS <= SSR TASK..................................................................................................... 56
3.12 USING LIFT TOOL,MOVE DE TO TRANSFER CART <= SSR TASK............................................... 58
3.13 MOVE FRUS FROM DAMAGED DE TO NEW DE <= SSR TASK .................................................... 62
3.14 MOVE NEW DE TO TRANSFER CART <= SSR TASK.................................................................... 63
3.15 INSTALL THE FANS INTO THE NEW DE <= SSR TASK ................................................................. 66
3.16 INSTALL NEW DE INTO FRAME <= SSR TASK ............................................................................ 68
3.17 SHIP DAMAGED DE BACK FOR FAILURE ANALYSIS.<= SSR TASK ........................................... 71
3.18 STORE ALL TOOLS.<= SSR TASK............................................................................................. 71
3.19 POWER ON THE DISK ENCLOSURE <= CUSTOMER TASK........................................................ 71
3.20 CONFIRM WITH THE CUSTOMER <= SSR TASK........................................................................... 73
4END OF POWER775 DISK ENCLOSURE CHASSIS SERVICE PROCEDURE .................... 73
5APPENDIX A: POWER775 DISK ENCLOSURE (DE) PRESSURE TEST PROCEDURE..... 74
5.1 SAFETY NOTICES ...................................................................................................................... 74

Power775 Disk Enclosure Chassis Service Procedure
Page 3 of 171
5.2 BACKGROUND: ......................................................................................................................... 76
5.3 PROCEDURE:............................................................................................................................. 76
5.4 END OF POWER775 ERROR!REFERENCE SOURCE NOT FOUND.PRESSURE TEST PROCEDURE ...... 87
6APPENDIX B: POWER775 BPC FSP COMMAND LINE PROCEDURE................................ 89
6.1 PROCEDURE TO ACCESS THE BPC FSP COMMAND LINE............................................................ 89
6.2 END OF APPENDIX B: POWER775 BPC FSP COMMAND LINE PROCEDURE ................................. 91
7APPENDIX C: POWER775 DISK ENCLOSURE (DE) FILL PROCEDURE........................... 92
7.1 SAFETY NOTICES ...................................................................................................................... 92
7.2 BACKGROUND: ......................................................................................................................... 94
7.3 PROCEDURE:............................................................................................................................. 94
7.4 END OF APPENDIX C: POWER775 DE FILL PROCEDURE ........................................................... 107
8APPENDIX D: POWER775 DISK ENCLOSURE (DE) DRAIN PROCEDURE ..................... 108
8.1 SAFETY NOTICES .................................................................................................................... 108
8.2 BACKGROUND: ....................................................................................................................... 110
8.3 PROCEDURE:........................................................................................................................... 110
8.4 END OF APPENDIX D: POWER775 DISK ENCLOSURE (DE) DRAIN PROCEDURE......................... 123
9APPENDIX E: POWER775 FILL AND DRAIN TOOL (FDT) TANK DRAIN PROCEDURE
124
9.1 SAFETY NOTICES .................................................................................................................... 124
9.2 BACKGROUND: ....................................................................................................................... 126
9.3 PROCEDURE:........................................................................................................................... 126
9.4 END OF APPENDIX E: POWER775 FDT TANK DRAIN PROCEDURE ............................................ 139
10 APPENDIX F: POWER775 FILL AND DRAIN TOOL (FDT) TANK FILL PROCEDURE
140
10.1 SAFETY NOTICES .................................................................................................................... 140
10.2 BACKGROUND: ....................................................................................................................... 142
10.3 PROCEDURE:........................................................................................................................... 142
10.4 END OF APPENDIX F: POWER775 FDT TANK FILL PROCEDURE................................................ 155
11 APPENDIX G: POWER775 FILL AND DRAIN TOOL (FDT) PRESSURE TEST
CALIBRATION PROCEDURE....................................................................................................... 156
11.1 SAFETY NOTICES .................................................................................................................... 156
11.2 BACKGROUND: ....................................................................................................................... 158
11.3 PROCEDURE:........................................................................................................................... 158
11.4 END OF APPENDIX G: POWER775 FDT PRESSURE TEST CALIBRATION PROCEDURE................. 169
12 APPENDIX H: IBM POWER775 FDT VOLUME TABLES.............................................. 170
12.1 IBM POWER 775 COMPONENT WATER VOLUMES.................................................................... 170
12.2 IBM POWER 775 SYSTEM WATER VOLUMES........................................................................... 170
12.3 IBM POWER 775 SYSTEM WATER CONTAINERS PER FRAME.................................................... 171
12.4 END OF APPENDIX H: POWER775 FDT VOLUME TABLES......................................................... 171

Power775 Disk Enclosure Chassis Service Procedure
Page 4 of 171
Figure List
Figure 1 DE front view cables disconnected ...................................................................................................... 12
Figure 2 DE rear view cables disconnected ........................................................................................................... 12
Figure 3 DE Enclosure VPD Label ....................................................................................................................... 13
Figure 4 Disk Enclosure HEX Cage ID................................................................................................................. 19
Figure 5 Frame Photo showing UEPO location ..................................................................................................... 20
Figure 6 UEPO assembly showing frame Identify Amber LED ............................................................................. 21
Figure 7 Door Latch ............................................................................................................................................. 22
Figure 8 Door Latch handle shown extended......................................................................................................... 22
Figure 9 The Front Enclosure ID LED is located on the DE DCCAs...................................................................... 23
Figure 10 Rear Enclosure ID LED is located on the bottom right side of the DE .................................................. 24
Figure 11: T1 and T4 Input Power LEDs on the DE DCCAs ................................................................................ 27
Figure 12 Removal of Front Door ......................................................................................................................... 28
Figure 13 Door Hinge Pin..................................................................................................................................... 29
Figure 14: Disk Enclosure and UEPO Location Info............................................................................................. 30
Figure 15: Frame UEPO Service Position............................................................................................................. 31
Figure 16: Disk Enclosure and Door Latch Plate Location Info............................................................................. 32
Figure 17: Door Latch Plate Screw Location........................................................................................................ 33
Figure 18: Door Latch Plate Removal .................................................................................................................. 33
Figure 19: DCCA Service Network Communications (E/NET) Cable................................................................... 34
Figure 20 DE cabling............................................................................................................................................ 35
Figure 21 Disk Enclosure DCCA Power Cables (HPIC)........................................................................................ 36
Figure 22: Disk Enclosure Port Card Cabling....................................................................................................... 37
Figure 23 Photo of Front Rail Block Captive Screw .............................................................................................. 38
Figure 24: Front Rail Block Screws ..................................................................................................................... 39
Figure 25 Water Hose Connector.......................................................................................................................... 41
Figure 26 Disk Enclosure Rear Rail Block Captive Screws ................................................................................... 42
Figure 27 Lift Tool attachment Bracket................................................................................................................. 43
Figure 28 Lift Tool Anchor Holes......................................................................................................................... 43
Figure 29: Lift Tool against Front Side of Frame.................................................................................................. 44
Figure 30 Lift Tool attached to frame.................................................................................................................... 44
Figure 31: Front Table Stop................................................................................................................................. 45
Figure 32: Lift Table Movement Path .................................................................................................................. 46
Figure 33: Secure Cables ..................................................................................................................................... 46
Figure 34 Power Drill Operation – Correct Technique........................................................................................... 47
Figure 35 Power Drill Operation – Correct Settings for Use .................................................................................. 47
Figure 36 Relocate the DCCA cables.................................................................................................................... 50
Figure 37 Cable Protector Sheet............................................................................................................................ 50
Figure 38 Fold Cable Protector Sheet.................................................................................................................... 51
Figure 39 Cable protector sheet shown in upper left position ................................................................................. 51
Figure 40 Blue-purple Recessed Touch Points....................................................................................................... 52
Figure 41 Front of DE resting on lift tool .............................................................................................................. 52
Figure 42 DE slid out slowly to point of latch engagement .................................................................................... 53
Figure 43 Disengage the right latch first................................................................................................................ 54
Figure 44 Side view of latching system of DE out of frame ................................................................................... 54
Figure 45 DE removed from frame ....................................................................................................................... 55
Figure 46 DE supported by Lift Tool and cage stop bracket................................................................................... 55
Figure 47 Rotate ¼ turn fasteners for fan cover removal........................................................................................ 56
Figure 48 Fan removal rings ................................................................................................................................. 57
Figure 49 Lift fan out of disk enclosure................................................................................................................. 57
Figure 50 Reinstall cover ...................................................................................................................................... 58
Figure 51 Remove transfer cart guard rails............................................................................................................ 59
Figure 52 Attach winch hook................................................................................................................................ 59

Power775 Disk Enclosure Chassis Service Procedure
Page 5 of 171
Figure 53 Transfer cart winch attachment position and winch position “B”........................................................... 60
Figure 54 Winch hook attached to drawer ............................................................................................................. 60
Figure 55 Use Winch to pull DE onto transfer cart ................................................................................................ 61
Figure 56 DE shipping hold downs shown in up position....................................................................................... 61
Figure 57 Remove transfer cart guide rails ............................................................................................................ 62
Figure 58 Lift tool showing White roller engagement area and the transfer cart Black rubber guides...................... 63
Figure 59 Transfer cart coupled to lift tool ............................................................................................................ 64
Figure 60 Winch tool anchor slots......................................................................................................................... 64
Figure 61 ¼ turn fastener fan cover removal.................................................................................................... 66
Figure 62 Fan floating blind mate connector ......................................................................................................... 67
Figure 63 Reinstall cover ...................................................................................................................................... 67
Figure 64: Rail Block Rail Block Interfering with Drive Carrier ........................................................................... 70
Figure 65: Rail Block Correctly Installed ............................................................................................................. 70
Table List
Table 1 Release / Revision History ......................................................................................................................... 6
Table 2 Required Documents.................................................................................................................................. 6
Table 3 Related Documents .................................................................................................................................... 6
Table 4 IBM Power 775 Component Water Volumes.......................................................................................... 170
Table 5 IBM Power 775 System Water Volume (Liters)...................................................................................... 170
Table 6 IBM Power 775 System Water Volume (Gallons)................................................................................... 170
Table 7 IBM Power 775 Required Number of System Water Containers per Frame ............................................. 171

Power775 Disk Enclosure Chassis Service Procedure
Page 6 of 171
1
11
1GENERAL
1.1 Release / Revision History
File Name Date Description
“p775_de_chassis.pdf” 3/6/2012 Initial Release
Table 1 Release / Revision History
1.2 Where to find this document
The current “Power775 Disk Enclosure Chassis Service Procedure” document is “p775_de_chassis.pdf” which is to
be downloaded from:
InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm
Click “PDF files for the IBM Power 775 (9125-F2C) removing and replacing parts”
Under “Disk Enclosure (DE)”, click “Disk Enclosure Chassis” to download PDF “p775_de_chassis.pdf”
This is the only valid source for the latest Power775 Disk Enclosure Chassis Service Procedure.
1.3 Required Documents
Document PN Location
Safety Notices
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7hdx/G229-9054.pdf
Doc# G229-9054 InfoCenter *
Table 2 Required Documents
*InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm
1.4 Related Documents
Document PN Location
GPFS Native RAID Administration and Programming Reference Document # SA23-1354 InfoCenter *
Table 3 Related Documents
*InfoCenter Website: http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm

Power775 Disk Enclosure Chassis Service Procedure
Page 7 of 171
1.5 Abbreviations
Abbreviation Definition Details
CEC Central Electronic Complex Also referred to as the node.
DCCA Distributed Conversion and
Control Assembly
The power supplies for the CEC and DE are
called the CEC DCCA and DE DCCA
respectively.
DE Disk Enclosure
GPFS Global Parallel File System IBM’s file system utilizing software RAID
HDD Hard Disk Drive This also means hard drive
LED Light Emitting Diode
PCB Printed Circuit Board
RAID Redundant Array of Inexpensive
Disks
SAS Serial Attached SCSI Protocol used for direct attached storage
SSR Systems Services Representative IBM Service personnel
SSD Solid State Drive
UEPO Unit Emergency Power Off

Power775 Disk Enclosure Chassis Service Procedure
Page 8 of 171
2
22
2OVERVIEW
This section is an overview only. Do not start the service procedure until Section 3 which contains the detailed
steps.
2.1 Safety Notices
Read “Safety_Notices “ available from InfoCenter – see Section 1.3.
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7hdx/G229-9054.pdf
The following cautions apply to all Power775 service procedures:
CAUTION:
Energy hazard present. Shorting might result in system outage and possible physical injury.
Remove all metallic jewelry before servicing. (C001)
CAUTION:
The doors and covers to the product are to be closed at all times except for service by trained
service personnel. All covers must be replaced and doors locked at the conclusion of the service
operation. (C013)
CAUTION:
Servicing of this product or unit is to be performed by trained service personnel only. (C032)
The following notices specifically pertain to this Power775 service procedure.
DANGER: Heavy equipment — personal injury or equipment damage might result if mishandled.
(D006)
CAUTION:
The weight of this part or unit is more than 55 kg (121.2 lb). It takes specially trained persons, a
lifting device, or both to safely lift this part or unit. (C011)
CAUTION: Do not remove or install this unit without using the provided lift tool. (C017)
CAUTION: The water-based coolant solution may contain an additive intended to inhibit corrosion
(or provide other functions). The solution may cause irritation to the skin or eyes. Avoid direct
contact with the solution. Employ appropriate Personal Protective Equipment when performing
operations involving the coolant or which may potentially expose you to the coolant. Refer to the
MSDS for more information. (C037)
CAUTION: This unit must not be left running unattended, service personnel should always be
overseeing the process. (C038)

Power775 Disk Enclosure Chassis Service Procedure
Page 9 of 171
DANGER: Hazardous voltage present. Voltages present constitute a shock hazard, which can cause
severe injury or death. (L004)
CAUTION: Sharp edges, corners, or joints nearby. (L006)
CAUTION: System or part is heavy. The label is accompanied by a specific weight range. (L009)
CAUTION: Protective eyewear is needed for the procedure. (L011)
CAUTION: Pinch hazard. (L012)
DANGER: Heavy equipment—personal injury or equipment damage might result if mishandled.
(L013)
CAUTION: Chemical resistant gloves are needed for this procedure. (L014)

Power775 Disk Enclosure Chassis Service Procedure
Page 10 of 171
DANGER: Risk of electric shock due to water or a water solution which is present in this product.
Avoid working on or near energized equipment with wet hands or when spilled water is present.
(L016)

Power775 Disk Enclosure Chassis Service Procedure
Page 11 of 171
2.2 ATTENTION: File System Risk Statement
The Global Parallel File System (GPFS) implementation of software RAID stripes data across all the Disk
Enclosures in the cluster. If a single Disk Enclosure is powered off while GPFS is active, the file system
will go into panic and become unavailable.
This service procedure requires powering off a Disk Enclosure and because of this requires the customer to
shut down GPFS.
2.3 Confirm how you got to this Power 775 DE Chassis Replace
Service Procedure
You should be performing this procedure if you are working on a DE with a damaged chassis or a shorted
power domain that has been diagnosed to be on the internal cards in the DE chassis.
You must contact Product Engineering (PE) for approval and have a new chassis and transfer cart shipped to
the customer’s location where the damaged DE chassis is located.
You should have downloaded this procedure from:
InfoCenter Website:
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/p7ee2/p7ee2kickoff.htm
This is the only valid source for the latest Power775 DE Chassis Service Procedure.
2.4 Disk Enclosure Chassis Description
The Disk Enclosure Chassis contains the following internal parts that are not replaceable in the field:
a. One metal chassis
b. Three backplane printed circuit boards
c. One Water/Air Heat Exchanger
The Disk Enclosure Chassis has been designed to withstand many faults, so a chassis replacement should
almost never be required. The only faults requiring a chassis replacement are:
a. A short in the power distribution system that is confirmed to be present on one of the internal
printed circuit boards
b. Physical damage that prevents the plugging of a DE DCCA, DE Fan, Drive Carrier or Port Card
All DE Chassis service events must be reviewed by PE (Product Engineering) before a replacement DE
Chassis is ordered.

Power775 Disk Enclosure Chassis Service Procedure
Page 12 of 171
Figures 1 and 2 show a Disk Enclosure to be removed and replaced. All cables have been disconnected.
The FRUs (Drives, Drive Carriers, Port Cards, and DE DCCAs are still present in these figures and will be
moved to the new chassis).
Figure 1 DE front view cables disconnected
Figure 2 DE rear view cables disconnected

Power775 Disk Enclosure Chassis Service Procedure
Page 13 of 171
2.4.1 Enclosure VPD label and Location Code
The enclosure VPD label is placed on the rear of a Disk Enclosure just above the enclosure LEDs (see Figure 5 DE
Enclosure VPD Label).
Figure 3 DE Enclosure VPD Label
An example of a location code of Fan 4 in the DE with the label shown in Figure 3 is:
U78AD.001.992001B-P1-A4
2.5 Concurrency
The DE Chassis is NOT concurrently maintainable. This procedure requires the customer to stop all
client applications and shut down the file system. .
2.6 DE Chassis Weight
The weight of the DE chassis is 550 lbs (250 kg) when filled with 376 hard drives, 8 SSDs, 96 Drive Carriers, 16
Port Cards, and 2 DE DCCAs. The transfer cart and the lift tool will be used to move both the damaged chassis
and the new chassis.

Power775 Disk Enclosure Chassis Service Procedure
Page 14 of 171
2.7 Required SSRs and Roles
This service procedure requires two SSRs.
This service procedure contains steps to be performed by a customer system administrator and an IBM SSR
(System Service Representative).
•The customer system administrator performs the STEPs in Sections marked with “<= CUSTOMER
TASK”
•The SSR performs the STEPs in Sections marked with “<= SSR TASK”
2.8 Estimated Service Time
The time required to unpack a new chassis, change out a DE chassis and package the damaged chassis to be
shipped back to IBM is about 4 hours.
2.9 Required Tools
Service card (shipped in the Power 775 frame)
Fill and Drain Tool P/N 45D6928.
•Cable Assembly, HPIC tool P/N 45D7998 (shipped in Power 775 Fill & Drain Tool Kit)
•Cable Assembly E/Net (test tool) P/N 45D8000 (shipped in Power 775 Fill & Drain Tool Kit)
Lift Tool Kit 74Y1087
•Ladder PN 46G5947 may be required for upper DE locations (shipped in the Power 775 Lift Tool
Kit)
Hand Tool Kit P/N 74Y0988
•Torque Clutch P/N 74Y0985 (shipped in the Hand Tool Kit)
•Ratchet handle P/N 6428240 (shipped in the Hand Tool Kit)
•Extension (18”) P/N 46K2707 (shipped in the Hand Tool Kit)
•2 mm Hex Torque Driver P/N 74Y0983 (shipped in the Hand Tool Kit)
•3 mm Hex Torque Driver P/N 74Y0998 (shipped in the Hand Tool Kit)
•4mm Hex Torque Driver PN 41V1059 (shipped in the Hand Tool Kit)
•5 mm Hex tool P/N 74Y0986 (shipped in the Hand Tool Kit)
•10 mm Socket P/N 02F3582 (shipped in the Hand Tool Kit)
2.10 Prerequisites for this Procedure
In order to perform this procedure, you will need the following information:
1) The location code of the DE to be serviced.
2) The frame number and frame serial number of the DE to be serviced.

Power775 Disk Enclosure Chassis Service Procedure
Page 15 of 171
2.11 Overview of Procedure
This is an overview of the tasks to be performed. Read this overview but do not perform any of the tasks yet.
3.1 UNPACK AND PRESSURE TEST THE NEW DE CHASSIS <= SSR TASK.....ERROR!BOOKMARK NOT
DEFINED.
3.2 ASSESS SHUTDOWN OF FILE SYSTEM <= CUSTOMER TASKERROR!BOOKMARK NOT DEFINED.
3.3 SHUTDOWN THE FILE SYSTEM <= CUSTOMER TASK.........ERROR!BOOKMARK NOT DEFINED.
3.4 IDENTIFY THE FRAME <= SSR TASK....................................ERROR!BOOKMARK NOT DEFINED.
3.5 POWER OFF THE DISK ENCLOSURE <= CUSTOMER TASK..ERROR!BOOKMARK NOT DEFINED.
3.6 CONFIRM THAT 350V IS OFF TO THE DISK ENCLOSURE <= SSR TASK .ERROR!BOOKMARK NOT
DEFINED.
3.7 REMOVE FRONT DOOR AND LATCH PLATE,MOVE UEPO PANEL <= SSR TASK.............ERROR!
BOOKMARK NOT DEFINED.
3.8 DISCONNECT CABLES,HOSES,AND RETENTION SCREWS <= SSR TASK ..... ERROR!BOOKMARK
NOT DEFINED.
3.9 ATTACH THE LIFT TOOL TO THE FRAME <= SSR TASK........ERROR!BOOKMARK NOT DEFINED.
3.10 MOVE THE DISK ENCLOSURE ONTO THE LIFT TOOL <= SSR TASK ......ERROR!BOOKMARK NOT
DEFINED.
3.11 REMOVE FANS <= SSR TASK................................................ERROR!BOOKMARK NOT DEFINED.
3.12 USING LIFT TOOL,MOVE DE TO TRANSFER CART <= SSR TASK..........ERROR!BOOKMARK NOT
DEFINED.
3.13 MOVE FRUS FROM DAMAGED DE TO NEW DE <= SSR TASKERROR!BOOKMARK NOT DEFINED.
3.14 MOVE NEW DE TO TRANSFER CART <= SSR TASK...............ERROR!BOOKMARK NOT DEFINED.
3.15 INSTALL THE FANS INTO THE NEW DE <= SSR TASK ............ERROR!BOOKMARK NOT DEFINED.
3.16 INSTALL NEW DE INTO FRAME <= SSR TASK .......................ERROR!BOOKMARK NOT DEFINED.
3.17 SHIP DAMAGED DE BACK FOR FAILURE ANALYSIS.<= SSR TASK ......ERROR!BOOKMARK NOT
DEFINED.
3.18 STORE ALL TOOLS.<= SSR TASK........................................ERROR!BOOKMARK NOT DEFINED.
3.19 POWER ON THE DISK ENCLOSURE <= CUSTOMER TASK...ERROR!BOOKMARK NOT DEFINED.
3.20 CONFIRM WITH THE CUSTOMER <= SSR TASK......................ERROR!BOOKMARK NOT DEFINED.

Power775 Disk Enclosure Chassis Service Procedure
Page 16 of 171

Power775 Disk Enclosure Chassis Service Procedure
Page 17 of 171
3 SERVICE PROCEDURE
STOP – Do not proceed unless you have read
“Safety Notices” which is available from InfoCenter; see Section
1.3.
3.1 Unpack and pressure test the new DE Chassis <= SSR TASK
STEP 1 Remove the new DE Chassis and transfer cart from shipping container. The new chassis and
transfer cart will arrive in an Arbo box. Open the box, install the ramp and roll the transfer cart out
of the box. Do not destroy the shipping container as it will be reused to ship the transfer cart and
defective chassis back to IBM..
STEP 2 Using the procedure “Appendix A: Power775 DE Pressure Test Procedure”, pressure test the new
DE Chassis. This will require the Fill and Drain Tool P/N 45D6928
If the new DE Chassis fails the pressure test, return it and order another new chassis. When it
arrives perform STEPS 1 and 2 again.
If the new DE Chassis passes the pressure test, proceed to STEP 3.
3.2 Assess shutdown of file system <= CUSTOMER TASK
STEP 3 The customer must assess whether all client applications can be stopped at this time and whether
the Global Parallel File System (GPFS) can be shut down at this time.
This procedure requires powering off a Disk Enclosure, which under most conditions, if the file
system is active, will result in putting the file system into panic and making it unavailable. While
it is technically possible to drain all the data from a Disk Enclosure before shutting it down and
leave the file system active for this procedure, it is assumed impractical due to the excessive time
required to move all the data.
For more details, see related document “GPFS Native RAID Administration and Programming
Reference”, which can be found in InfoCenter.
If all client applications can be stopped and if GPFS can be shut down, proceed to STEP 4.
If you cannot stop the applications and file system at this time, you must wait to perform this
procedure until a time when the file system can be shut down.
3.3 Shutdown the file system <= CUSTOMER TASK
STEP 4 Stop all client applications.
STEP 5 Shut down GPFS. Wait for complete shutdown before proceeding to STEP 6.

Power775 Disk Enclosure Chassis Service Procedure
Page 18 of 171
3.4 Identify the frame <= SSR TASK
STEP 6 Use the procedure “Appendix B: Power775 BPC FSP Command Line Procedure” to access the
BPC FSP command line of the frame containing the Disk Enclosure with the FRU needing
replacement.
STEP 7 Blink the Enclosure Identify LEDs of the DE with the FRU needing replacement by using the
following command from the BPC Command Line:
This is the command syntax:
bpccmd –c 27<blank>0000<cage ID><FRU ID><LED blink state 00=off, 02=blink>
<blank> = “11”
<cage ID> = see Figure 4
<FRU ID> = “01” for the DE Identify LED.
<LED state> = “02” for this step
Type in the following, inserting the correct Cage ID DE chassis location:
bpccmd –c 27110000xx0102
Where “xx” is the Cage ID of the DE you are servicing. This field will be
05,07,09,0B,0D, or 0F (see Figure 4).
The correct return code is 001100. If you do not receive this, contact the next level of support.
Below is an example assuming Cage ID=0f

Power775 Disk Enclosure Chassis Service Procedure
Page 19 of 171
Figure 4 Disk Enclosure HEX Cage ID
Cage ID (Hex) = 0F
Cage ID (Hex) = 0D
Cage ID (Hex) = 0B
Cage ID (Hex) = 09
Cage ID (Hex) = 07
Cage ID (Hex) = 05

Power775 Disk Enclosure Chassis Service Procedure
Page 20 of 171
STEP 8 Locate the frame. Confirm that it is the correct frame by checking that its UEPO Panel Identify
LED is blinking. This LED is located on the UEPO panel and it is marked by the “!” symbol (see
Figure 5 and Figure 6).
Figure 5 Frame Photo showing UEPO location